./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1052a.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_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1052a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c78f6baa30553ee1ef9e5dd79b3fe49457cbaef ..................................................................................................................................................................................................................................................................................................... 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_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1052a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c78f6baa30553ee1ef9e5dd79b3fe49457cbaef ............................................................................................................................................................................................................................................................................................................................................................... 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 10:49:26,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 10:49:26,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 10:49:26,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 10:49:26,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 10:49:26,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 10:49:26,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 10:49:26,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 10:49:26,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 10:49:26,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 10:49:26,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 10:49:26,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 10:49:26,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 10:49:26,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 10:49:26,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 10:49:26,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 10:49:26,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 10:49:26,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 10:49:26,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 10:49:26,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 10:49:26,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 10:49:26,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 10:49:26,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 10:49:26,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 10:49:26,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 10:49:26,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 10:49:26,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 10:49:26,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 10:49:26,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 10:49:26,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 10:49:26,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 10:49:26,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 10:49:26,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 10:49:26,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 10:49:26,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 10:49:26,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 10:49:26,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 10:49:26,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 10:49:26,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 10:49:26,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 10:49:26,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 10:49:26,343 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 10:49:26,355 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 10:49:26,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 10:49:26,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 10:49:26,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 10:49:26,357 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 10:49:26,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 10:49:26,357 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 10:49:26,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 10:49:26,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 10:49:26,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 10:49:26,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 10:49:26,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 10:49:26,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 10:49:26,359 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 10:49:26,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 10:49:26,359 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 10:49:26,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 10:49:26,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 10:49:26,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 10:49:26,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 10:49:26,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 10:49:26,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:49:26,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 10:49:26,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 10:49:26,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 10:49:26,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 10:49:26,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 10:49:26,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 10:49:26,361 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 10:49:26,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c78f6baa30553ee1ef9e5dd79b3fe49457cbaef [2019-12-07 10:49:26,476 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 10:49:26,483 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 10:49:26,486 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 10:49:26,487 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 10:49:26,487 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 10:49:26,487 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1052a.c [2019-12-07 10:49:26,523 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer/data/a24ad2c83/806cd972b53c4031b75d7fe35a0bf493/FLAG202e4814b [2019-12-07 10:49:26,940 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 10:49:26,941 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/sv-benchmarks/c/float-newlib/double_req_bl_1052a.c [2019-12-07 10:49:26,945 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer/data/a24ad2c83/806cd972b53c4031b75d7fe35a0bf493/FLAG202e4814b [2019-12-07 10:49:26,953 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer/data/a24ad2c83/806cd972b53c4031b75d7fe35a0bf493 [2019-12-07 10:49:26,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 10:49:26,956 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 10:49:26,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 10:49:26,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 10:49:26,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 10:49:26,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:49:26" (1/1) ... [2019-12-07 10:49:26,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21a99e56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:49:26, skipping insertion in model container [2019-12-07 10:49:26,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:49:26" (1/1) ... [2019-12-07 10:49:26,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 10:49:26,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 10:49:27,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:49:27,127 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 10:49:27,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:49:27,163 INFO L208 MainTranslator]: Completed translation [2019-12-07 10:49:27,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:49:27 WrapperNode [2019-12-07 10:49:27,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 10:49:27,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 10:49:27,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 10:49:27,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 10:49:27,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:49:27" (1/1) ... [2019-12-07 10:49:27,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:49:27" (1/1) ... [2019-12-07 10:49:27,192 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 10:49:27,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 10:49:27,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 10:49:27,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 10:49:27,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:49:27" (1/1) ... [2019-12-07 10:49:27,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:49:27" (1/1) ... [2019-12-07 10:49:27,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:49:27" (1/1) ... [2019-12-07 10:49:27,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:49:27" (1/1) ... [2019-12-07 10:49:27,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:49:27" (1/1) ... [2019-12-07 10:49:27,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:49:27" (1/1) ... [2019-12-07 10:49:27,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:49:27" (1/1) ... [2019-12-07 10:49:27,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 10:49:27,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 10:49:27,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 10:49:27,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 10:49:27,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:49:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:49:27,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-07 10:49:27,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 10:49:27,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 10:49:27,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 10:49:27,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 10:49:27,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 10:49:27,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 10:49:27,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 10:49:27,456 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 10:49:27,456 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-12-07 10:49:27,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:49:27 BoogieIcfgContainer [2019-12-07 10:49:27,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 10:49:27,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 10:49:27,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 10:49:27,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 10:49:27,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 10:49:26" (1/3) ... [2019-12-07 10:49:27,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:49:27, skipping insertion in model container [2019-12-07 10:49:27,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:49:27" (2/3) ... [2019-12-07 10:49:27,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:49:27, skipping insertion in model container [2019-12-07 10:49:27,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:49:27" (3/3) ... [2019-12-07 10:49:27,462 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052a.c [2019-12-07 10:49:27,468 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 10:49:27,472 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 10:49:27,480 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 10:49:27,495 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 10:49:27,495 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 10:49:27,495 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 10:49:27,495 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 10:49:27,495 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 10:49:27,495 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 10:49:27,495 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 10:49:27,496 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 10:49:27,505 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2019-12-07 10:49:27,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 10:49:27,509 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:49:27,509 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:49:27,510 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:49:27,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:49:27,513 INFO L82 PathProgramCache]: Analyzing trace with hash 658478814, now seen corresponding path program 1 times [2019-12-07 10:49:27,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:49:27,519 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790637810] [2019-12-07 10:49:27,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:49:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:49:27,593 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 10:49:27,593 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790637810] [2019-12-07 10:49:27,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:49:27,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 10:49:27,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439905472] [2019-12-07 10:49:27,597 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 10:49:27,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:49:27,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 10:49:27,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 10:49:27,607 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2019-12-07 10:49:27,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:49:27,620 INFO L93 Difference]: Finished difference Result 72 states and 114 transitions. [2019-12-07 10:49:27,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 10:49:27,620 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-12-07 10:49:27,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:49:27,627 INFO L225 Difference]: With dead ends: 72 [2019-12-07 10:49:27,627 INFO L226 Difference]: Without dead ends: 34 [2019-12-07 10:49:27,629 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 10:49:27,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-07 10:49:27,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-07 10:49:27,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-07 10:49:27,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2019-12-07 10:49:27,652 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 13 [2019-12-07 10:49:27,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:49:27,653 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2019-12-07 10:49:27,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 10:49:27,653 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2019-12-07 10:49:27,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 10:49:27,653 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:49:27,653 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:49:27,654 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:49:27,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:49:27,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1562173395, now seen corresponding path program 1 times [2019-12-07 10:49:27,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:49:27,654 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900091225] [2019-12-07 10:49:27,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:49:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:49:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:49:27,765 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 10:49:27,765 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 10:49:27,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 10:49:27 BoogieIcfgContainer [2019-12-07 10:49:27,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 10:49:27,787 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 10:49:27,787 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 10:49:27,788 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 10:49:27,788 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:49:27" (3/4) ... [2019-12-07 10:49:27,790 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 10:49:27,791 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 10:49:27,792 INFO L168 Benchmark]: Toolchain (without parser) took 835.74 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 948.9 MB in the beginning and 1.0 GB in the end (delta: -98.2 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2019-12-07 10:49:27,793 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:49:27,793 INFO L168 Benchmark]: CACSL2BoogieTranslator took 206.81 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 948.9 MB in the beginning and 1.1 GB in the end (delta: -158.7 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2019-12-07 10:49:27,793 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.59 ms. Allocated memory is still 1.1 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 10:49:27,794 INFO L168 Benchmark]: Boogie Preprocessor took 21.24 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:49:27,794 INFO L168 Benchmark]: RCFGBuilder took 243.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2019-12-07 10:49:27,795 INFO L168 Benchmark]: TraceAbstraction took 329.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2019-12-07 10:49:27,795 INFO L168 Benchmark]: Witness Printer took 3.26 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:49:27,797 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 206.81 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 948.9 MB in the beginning and 1.1 GB in the end (delta: -158.7 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.59 ms. Allocated memory is still 1.1 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. * Boogie Preprocessor took 21.24 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 243.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 329.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.26 ms. Allocated memory is still 1.1 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: 106]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 89, overapproximation of someBinaryArithmeticDOUBLEoperation at line 101, overapproximation of bitwiseAnd at line 88. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L101] double x = 1.0 / 0.0; [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L26] COND TRUE j0 < 20 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L102] double res = floor_double(x); [L81] __int32_t hx, lx; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L83] ieee_double_shape_type ew_u; [L84] ew_u.value = (x) [L85] EXPR ew_u.parts.msw [L85] (hx) = ew_u.parts.msw [L86] EXPR ew_u.parts.lsw [L86] (lx) = ew_u.parts.lsw [L88] hx &= 0x7fffffff [L89] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L90] hx = 0x7ff00000 - hx [L91] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L105] COND TRUE !isinf_double(res) [L106] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 51 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=37occurred 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, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 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 10:49:29,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 10:49:29,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 10:49:29,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 10:49:29,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 10:49:29,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 10:49:29,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 10:49:29,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 10:49:29,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 10:49:29,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 10:49:29,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 10:49:29,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 10:49:29,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 10:49:29,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 10:49:29,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 10:49:29,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 10:49:29,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 10:49:29,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 10:49:29,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 10:49:29,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 10:49:29,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 10:49:29,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 10:49:29,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 10:49:29,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 10:49:29,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 10:49:29,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 10:49:29,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 10:49:29,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 10:49:29,140 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 10:49:29,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 10:49:29,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 10:49:29,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 10:49:29,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 10:49:29,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 10:49:29,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 10:49:29,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 10:49:29,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 10:49:29,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 10:49:29,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 10:49:29,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 10:49:29,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 10:49:29,145 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 10:49:29,155 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 10:49:29,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 10:49:29,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 10:49:29,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 10:49:29,156 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 10:49:29,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 10:49:29,157 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 10:49:29,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 10:49:29,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 10:49:29,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 10:49:29,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 10:49:29,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 10:49:29,158 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 10:49:29,158 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 10:49:29,158 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 10:49:29,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 10:49:29,158 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 10:49:29,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 10:49:29,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 10:49:29,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 10:49:29,159 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 10:49:29,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 10:49:29,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:49:29,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 10:49:29,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 10:49:29,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 10:49:29,160 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 10:49:29,160 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 10:49:29,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 10:49:29,160 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 10:49:29,160 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 10:49:29,160 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_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c78f6baa30553ee1ef9e5dd79b3fe49457cbaef [2019-12-07 10:49:29,336 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 10:49:29,345 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 10:49:29,347 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 10:49:29,348 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 10:49:29,348 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 10:49:29,349 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1052a.c [2019-12-07 10:49:29,388 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer/data/5553a699c/b46d994fa5254e05aae2f57e27e6fcd4/FLAG7ad47fc42 [2019-12-07 10:49:29,841 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 10:49:29,842 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/sv-benchmarks/c/float-newlib/double_req_bl_1052a.c [2019-12-07 10:49:29,846 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer/data/5553a699c/b46d994fa5254e05aae2f57e27e6fcd4/FLAG7ad47fc42 [2019-12-07 10:49:29,854 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer/data/5553a699c/b46d994fa5254e05aae2f57e27e6fcd4 [2019-12-07 10:49:29,856 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 10:49:29,857 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 10:49:29,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 10:49:29,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 10:49:29,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 10:49:29,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:49:29" (1/1) ... [2019-12-07 10:49:29,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cebc80a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:49:29, skipping insertion in model container [2019-12-07 10:49:29,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:49:29" (1/1) ... [2019-12-07 10:49:29,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 10:49:29,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 10:49:29,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:49:29,996 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 10:49:30,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:49:30,067 INFO L208 MainTranslator]: Completed translation [2019-12-07 10:49:30,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:49:30 WrapperNode [2019-12-07 10:49:30,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 10:49:30,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 10:49:30,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 10:49:30,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 10:49:30,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:49:30" (1/1) ... [2019-12-07 10:49:30,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:49:30" (1/1) ... [2019-12-07 10:49:30,098 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 10:49:30,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 10:49:30,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 10:49:30,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 10:49:30,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:49:30" (1/1) ... [2019-12-07 10:49:30,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:49:30" (1/1) ... [2019-12-07 10:49:30,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:49:30" (1/1) ... [2019-12-07 10:49:30,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:49:30" (1/1) ... [2019-12-07 10:49:30,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:49:30" (1/1) ... [2019-12-07 10:49:30,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:49:30" (1/1) ... [2019-12-07 10:49:30,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:49:30" (1/1) ... [2019-12-07 10:49:30,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 10:49:30,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 10:49:30,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 10:49:30,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 10:49:30,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:49:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:49:30,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-12-07 10:49:30,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-07 10:49:30,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 10:49:30,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 10:49:30,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 10:49:30,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 10:49:30,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 10:49:30,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 10:49:31,183 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 10:49:31,183 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-12-07 10:49:31,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:49:31 BoogieIcfgContainer [2019-12-07 10:49:31,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 10:49:31,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 10:49:31,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 10:49:31,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 10:49:31,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 10:49:29" (1/3) ... [2019-12-07 10:49:31,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2cc52b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:49:31, skipping insertion in model container [2019-12-07 10:49:31,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:49:30" (2/3) ... [2019-12-07 10:49:31,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2cc52b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:49:31, skipping insertion in model container [2019-12-07 10:49:31,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:49:31" (3/3) ... [2019-12-07 10:49:31,188 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052a.c [2019-12-07 10:49:31,194 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 10:49:31,199 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 10:49:31,206 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 10:49:31,220 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 10:49:31,220 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 10:49:31,220 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 10:49:31,221 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 10:49:31,221 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 10:49:31,221 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 10:49:31,221 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 10:49:31,221 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 10:49:31,230 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2019-12-07 10:49:31,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 10:49:31,234 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:49:31,234 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:49:31,234 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:49:31,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:49:31,238 INFO L82 PathProgramCache]: Analyzing trace with hash 658478814, now seen corresponding path program 1 times [2019-12-07 10:49:31,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 10:49:31,245 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236196249] [2019-12-07 10:49:31,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-07 10:49:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:49:31,315 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 10:49:31,318 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:49:31,328 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 10:49:31,328 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 10:49:31,331 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 10:49:31,332 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236196249] [2019-12-07 10:49:31,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:49:31,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 10:49:31,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702459100] [2019-12-07 10:49:31,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 10:49:31,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 10:49:31,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 10:49:31,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 10:49:31,346 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2019-12-07 10:49:31,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:49:31,359 INFO L93 Difference]: Finished difference Result 72 states and 114 transitions. [2019-12-07 10:49:31,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 10:49:31,360 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-12-07 10:49:31,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:49:31,367 INFO L225 Difference]: With dead ends: 72 [2019-12-07 10:49:31,367 INFO L226 Difference]: Without dead ends: 34 [2019-12-07 10:49:31,369 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 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 10:49:31,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-07 10:49:31,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-07 10:49:31,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-07 10:49:31,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2019-12-07 10:49:31,393 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 13 [2019-12-07 10:49:31,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:49:31,393 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2019-12-07 10:49:31,393 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 10:49:31,393 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2019-12-07 10:49:31,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 10:49:31,394 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:49:31,394 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:49:31,595 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 10:49:31,596 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:49:31,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:49:31,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1562173395, now seen corresponding path program 1 times [2019-12-07 10:49:31,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 10:49:31,602 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568210456] [2019-12-07 10:49:31,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-12-07 10:49:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:49:31,727 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 10:49:31,729 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:49:31,823 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 10:49:31,823 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 10:49:31,928 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 10:49:31,928 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1568210456] [2019-12-07 10:49:31,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:49:31,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-12-07 10:49:31,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985678247] [2019-12-07 10:49:31,929 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 10:49:31,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 10:49:31,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 10:49:31,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-12-07 10:49:31,930 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand 8 states. [2019-12-07 10:49:32,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:49:32,129 INFO L93 Difference]: Finished difference Result 42 states and 55 transitions. [2019-12-07 10:49:32,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 10:49:32,130 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-12-07 10:49:32,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:49:32,131 INFO L225 Difference]: With dead ends: 42 [2019-12-07 10:49:32,131 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 10:49:32,131 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-12-07 10:49:32,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 10:49:32,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 10:49:32,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 10:49:32,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2019-12-07 10:49:32,134 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 15 [2019-12-07 10:49:32,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:49:32,135 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2019-12-07 10:49:32,135 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 10:49:32,135 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2019-12-07 10:49:32,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 10:49:32,135 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:49:32,135 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:49:32,336 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 10:49:32,337 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:49:32,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:49:32,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1582346339, now seen corresponding path program 1 times [2019-12-07 10:49:32,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 10:49:32,341 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31869743] [2019-12-07 10:49:32,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-12-07 10:49:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:49:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:49:32,646 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-12-07 10:49:32,647 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 10:49:32,847 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 10:49:32,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 10:49:32 BoogieIcfgContainer [2019-12-07 10:49:32,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 10:49:32,871 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 10:49:32,871 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 10:49:32,871 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 10:49:32,871 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:49:31" (3/4) ... [2019-12-07 10:49:32,873 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 10:49:32,910 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_150a1b29-a009-4edf-ab1f-4071096dc789/bin/uautomizer/witness.graphml [2019-12-07 10:49:32,911 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 10:49:32,912 INFO L168 Benchmark]: Toolchain (without parser) took 3055.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 951.0 MB in the beginning and 1.0 GB in the end (delta: -52.5 MB). Peak memory consumption was 83.9 MB. Max. memory is 11.5 GB. [2019-12-07 10:49:32,913 INFO L168 Benchmark]: CDTParser took 0.14 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 10:49:32,913 INFO L168 Benchmark]: CACSL2BoogieTranslator took 210.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -174.4 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. [2019-12-07 10:49:32,913 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.72 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 10:49:32,913 INFO L168 Benchmark]: Boogie Preprocessor took 24.70 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 10:49:32,914 INFO L168 Benchmark]: RCFGBuilder took 1060.78 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: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 11.5 GB. [2019-12-07 10:49:32,914 INFO L168 Benchmark]: TraceAbstraction took 1686.07 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: 82.1 MB). Peak memory consumption was 82.1 MB. Max. memory is 11.5 GB. [2019-12-07 10:49:32,914 INFO L168 Benchmark]: Witness Printer took 40.29 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 10:49:32,916 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 210.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -174.4 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.72 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. * Boogie Preprocessor took 24.70 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 1060.78 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: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1686.07 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: 82.1 MB). Peak memory consumption was 82.1 MB. Max. memory is 11.5 GB. * Witness Printer took 40.29 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: 106]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] static const double huge_floor = 1.0e300; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L101] double x = 1.0 / 0.0; [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L26] COND FALSE !(j0 < 20) VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L47] COND TRUE j0 > 51 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L48] COND TRUE j0 == 0x400 [L49] return x + x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L102] double res = floor_double(x); [L81] __int32_t hx, lx; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L83] ieee_double_shape_type ew_u; [L84] ew_u.value = (x) [L85] EXPR ew_u.parts.msw [L85] (hx) = ew_u.parts.msw [L86] EXPR ew_u.parts.lsw [L86] (lx) = ew_u.parts.lsw [L88] hx &= 0x7fffffff [L89] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L90] hx = 0x7ff00000 - hx [L91] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L105] COND TRUE !isinf_double(res) [L106] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 44 SDslu, 6 SDs, 0 SdLazy, 9 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 52 ConstructedInterpolants, 5 QuantifiedInterpolants, 2276 SizeOfPredicates, 8 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...