./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1121b.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_55831229-123c-4705-9966-db13aa704883/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1121b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/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 1c6c05365b181d4eacf1f0a2b19f094d722c4a6a ................................................................................................................................................................................................................................................................................................... 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_55831229-123c-4705-9966-db13aa704883/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1121b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/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 1c6c05365b181d4eacf1f0a2b19f094d722c4a6a ......................................................................................................................................................................................................................................................................................................................................................................... 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 17:58:00,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:58:00,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:58:00,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:58:00,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:58:00,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:58:00,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:58:00,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:58:00,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:58:00,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:58:00,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:58:00,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:58:00,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:58:00,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:58:00,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:58:00,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:58:00,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:58:00,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:58:00,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:58:00,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:58:00,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:58:00,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:58:00,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:58:00,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:58:00,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:58:00,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:58:00,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:58:00,308 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:58:00,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:58:00,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:58:00,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:58:00,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:58:00,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:58:00,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:58:00,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:58:00,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:58:00,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:58:00,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:58:00,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:58:00,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:58:00,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:58:00,314 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 17:58:00,323 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:58:00,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:58:00,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:58:00,324 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:58:00,324 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:58:00,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:58:00,325 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:58:00,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:58:00,325 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:58:00,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:58:00,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 17:58:00,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:58:00,326 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 17:58:00,326 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:58:00,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:58:00,326 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:58:00,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 17:58:00,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:58:00,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:58:00,327 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:58:00,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:58:00,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:58:00,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:58:00,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:58:00,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 17:58:00,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:58:00,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 17:58:00,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 17:58:00,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:58:00,328 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_55831229-123c-4705-9966-db13aa704883/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 -> 1c6c05365b181d4eacf1f0a2b19f094d722c4a6a [2019-12-07 17:58:00,439 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:58:00,449 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:58:00,452 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:58:00,453 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:58:00,453 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:58:00,454 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1121b.c [2019-12-07 17:58:00,497 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/bin/uautomizer/data/d6e014010/e9cd0b5c0045422c8483d418e3602c2d/FLAGde579cd2f [2019-12-07 17:58:00,920 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:58:00,920 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/sv-benchmarks/c/float-newlib/double_req_bl_1121b.c [2019-12-07 17:58:00,926 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/bin/uautomizer/data/d6e014010/e9cd0b5c0045422c8483d418e3602c2d/FLAGde579cd2f [2019-12-07 17:58:00,934 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/bin/uautomizer/data/d6e014010/e9cd0b5c0045422c8483d418e3602c2d [2019-12-07 17:58:00,936 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:58:00,937 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:58:00,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:58:00,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:58:00,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:58:00,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:58:00" (1/1) ... [2019-12-07 17:58:00,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aa1ff7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:58:00, skipping insertion in model container [2019-12-07 17:58:00,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:58:00" (1/1) ... [2019-12-07 17:58:00,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:58:00,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:58:01,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:58:01,140 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:58:01,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:58:01,183 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:58:01,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:58:01 WrapperNode [2019-12-07 17:58:01,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:58:01,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:58:01,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:58:01,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:58:01,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:58:01" (1/1) ... [2019-12-07 17:58:01,197 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:58:01" (1/1) ... [2019-12-07 17:58:01,217 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:58:01,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:58:01,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:58:01,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:58:01,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:58:01" (1/1) ... [2019-12-07 17:58:01,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:58:01" (1/1) ... [2019-12-07 17:58:01,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:58:01" (1/1) ... [2019-12-07 17:58:01,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:58:01" (1/1) ... [2019-12-07 17:58:01,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:58:01" (1/1) ... [2019-12-07 17:58:01,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:58:01" (1/1) ... [2019-12-07 17:58:01,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:58:01" (1/1) ... [2019-12-07 17:58:01,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:58:01,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:58:01,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:58:01,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:58:01,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:58:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/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 17:58:01,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 17:58:01,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 17:58:01,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-07 17:58:01,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 17:58:01,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:58:01,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:58:01,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 17:58:01,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-12-07 17:58:01,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 17:58:01,586 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:58:01,586 INFO L287 CfgBuilder]: Removed 22 assume(true) statements. [2019-12-07 17:58:01,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:58:01 BoogieIcfgContainer [2019-12-07 17:58:01,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:58:01,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:58:01,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:58:01,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:58:01,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:58:00" (1/3) ... [2019-12-07 17:58:01,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652449a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:58:01, skipping insertion in model container [2019-12-07 17:58:01,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:58:01" (2/3) ... [2019-12-07 17:58:01,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652449a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:58:01, skipping insertion in model container [2019-12-07 17:58:01,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:58:01" (3/3) ... [2019-12-07 17:58:01,592 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121b.c [2019-12-07 17:58:01,599 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:58:01,603 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 17:58:01,611 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 17:58:01,628 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:58:01,628 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 17:58:01,628 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:58:01,628 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:58:01,628 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:58:01,628 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:58:01,628 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:58:01,628 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:58:01,639 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2019-12-07 17:58:01,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 17:58:01,644 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:58:01,645 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:58:01,645 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:58:01,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:58:01,649 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2019-12-07 17:58:01,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:58:01,655 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261665331] [2019-12-07 17:58:01,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:58:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:58:01,740 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 17:58:01,741 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261665331] [2019-12-07 17:58:01,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:58:01,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 17:58:01,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528328259] [2019-12-07 17:58:01,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 17:58:01,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:58:01,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 17:58:01,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 17:58:01,756 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2019-12-07 17:58:01,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:58:01,773 INFO L93 Difference]: Finished difference Result 108 states and 190 transitions. [2019-12-07 17:58:01,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 17:58:01,774 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 17:58:01,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:58:01,781 INFO L225 Difference]: With dead ends: 108 [2019-12-07 17:58:01,781 INFO L226 Difference]: Without dead ends: 52 [2019-12-07 17:58:01,784 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 17:58:01,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-12-07 17:58:01,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2019-12-07 17:58:01,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-12-07 17:58:01,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2019-12-07 17:58:01,809 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2019-12-07 17:58:01,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:58:01,809 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2019-12-07 17:58:01,809 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 17:58:01,809 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2019-12-07 17:58:01,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 17:58:01,810 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:58:01,810 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:58:01,810 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:58:01,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:58:01,810 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2019-12-07 17:58:01,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:58:01,810 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367554913] [2019-12-07 17:58:01,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:58:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:58:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:58:01,894 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:58:01,894 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 17:58:01,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:58:01 BoogieIcfgContainer [2019-12-07 17:58:01,915 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:58:01,915 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:58:01,915 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:58:01,916 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:58:01,916 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:58:01" (3/4) ... [2019-12-07 17:58:01,918 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 17:58:01,918 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:58:01,920 INFO L168 Benchmark]: Toolchain (without parser) took 982.38 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 936.7 MB in the beginning and 1.0 GB in the end (delta: -87.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 11.5 GB. [2019-12-07 17:58:01,920 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 954.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:58:01,921 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 936.7 MB in the beginning and 1.1 GB in the end (delta: -166.4 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-12-07 17:58:01,921 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.98 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: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 11.5 GB. [2019-12-07 17:58:01,921 INFO L168 Benchmark]: Boogie Preprocessor took 27.13 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:58:01,922 INFO L168 Benchmark]: RCFGBuilder took 342.22 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: 38.7 MB). Peak memory consumption was 38.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:58:01,922 INFO L168 Benchmark]: TraceAbstraction took 327.05 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: 33.7 MB). Peak memory consumption was 33.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:58:01,923 INFO L168 Benchmark]: Witness Printer took 3.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-12-07 17:58:01,925 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 954.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 245.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 936.7 MB in the beginning and 1.1 GB in the end (delta: -166.4 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.98 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: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.13 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 342.22 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: 38.7 MB). Peak memory consumption was 38.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 327.05 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: 33.7 MB). Peak memory consumption was 33.7 MB. Max. memory is 11.5 GB. * Witness Printer took 3.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 175]: 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 170, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={3:0}] [L169] double x = __VERIFIER_nondet_double(); [L170] double 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}] [L171] double res = fmod_double(x, y); [L16] return x != x; VAL [one_fmod=1, Zero_fmod={3:0}] [L174] COND TRUE !isnan_double(res) [L175] __VERIFIER_error() VAL [one_fmod=1, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 55 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 81 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=55occurred 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 17:58:03,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:58:03,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:58:03,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:58:03,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:58:03,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:58:03,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:58:03,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:58:03,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:58:03,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:58:03,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:58:03,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:58:03,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:58:03,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:58:03,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:58:03,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:58:03,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:58:03,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:58:03,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:58:03,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:58:03,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:58:03,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:58:03,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:58:03,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:58:03,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:58:03,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:58:03,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:58:03,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:58:03,292 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:58:03,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:58:03,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:58:03,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:58:03,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:58:03,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:58:03,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:58:03,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:58:03,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:58:03,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:58:03,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:58:03,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:58:03,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:58:03,297 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 17:58:03,307 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:58:03,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:58:03,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:58:03,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:58:03,309 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:58:03,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:58:03,309 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:58:03,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:58:03,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:58:03,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 17:58:03,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:58:03,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 17:58:03,310 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 17:58:03,310 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 17:58:03,310 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:58:03,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:58:03,310 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:58:03,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 17:58:03,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:58:03,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:58:03,311 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:58:03,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:58:03,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:58:03,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:58:03,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:58:03,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 17:58:03,312 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 17:58:03,312 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 17:58:03,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 17:58:03,312 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:58:03,312 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 17:58:03,312 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_55831229-123c-4705-9966-db13aa704883/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 -> 1c6c05365b181d4eacf1f0a2b19f094d722c4a6a [2019-12-07 17:58:03,475 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:58:03,486 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:58:03,489 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:58:03,490 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:58:03,490 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:58:03,491 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1121b.c [2019-12-07 17:58:03,540 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/bin/uautomizer/data/aa5641799/4b7fecdad93146aea9207938e0dfcb9f/FLAG2214ea166 [2019-12-07 17:58:03,915 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:58:03,916 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/sv-benchmarks/c/float-newlib/double_req_bl_1121b.c [2019-12-07 17:58:03,921 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/bin/uautomizer/data/aa5641799/4b7fecdad93146aea9207938e0dfcb9f/FLAG2214ea166 [2019-12-07 17:58:03,930 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/bin/uautomizer/data/aa5641799/4b7fecdad93146aea9207938e0dfcb9f [2019-12-07 17:58:03,932 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:58:03,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:58:03,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:58:03,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:58:03,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:58:03,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:58:03" (1/1) ... [2019-12-07 17:58:03,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@203973a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:58:03, skipping insertion in model container [2019-12-07 17:58:03,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:58:03" (1/1) ... [2019-12-07 17:58:03,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:58:03,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:58:04,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:58:04,112 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:58:04,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:58:04,193 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:58:04,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:58:04 WrapperNode [2019-12-07 17:58:04,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:58:04,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:58:04,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:58:04,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:58:04,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:58:04" (1/1) ... [2019-12-07 17:58:04,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:58:04" (1/1) ... [2019-12-07 17:58:04,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:58:04,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:58:04,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:58:04,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:58:04,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:58:04" (1/1) ... [2019-12-07 17:58:04,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:58:04" (1/1) ... [2019-12-07 17:58:04,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:58:04" (1/1) ... [2019-12-07 17:58:04,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:58:04" (1/1) ... [2019-12-07 17:58:04,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:58:04" (1/1) ... [2019-12-07 17:58:04,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:58:04" (1/1) ... [2019-12-07 17:58:04,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:58:04" (1/1) ... [2019-12-07 17:58:04,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:58:04,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:58:04,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:58:04,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:58:04,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:58:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/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 17:58:04,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-12-07 17:58:04,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-07 17:58:04,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 17:58:04,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2019-12-07 17:58:04,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 17:58:04,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:58:04,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:58:04,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 17:58:04,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 17:58:07,592 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:58:07,592 INFO L287 CfgBuilder]: Removed 22 assume(true) statements. [2019-12-07 17:58:07,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:58:07 BoogieIcfgContainer [2019-12-07 17:58:07,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:58:07,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:58:07,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:58:07,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:58:07,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:58:03" (1/3) ... [2019-12-07 17:58:07,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4827d891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:58:07, skipping insertion in model container [2019-12-07 17:58:07,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:58:04" (2/3) ... [2019-12-07 17:58:07,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4827d891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:58:07, skipping insertion in model container [2019-12-07 17:58:07,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:58:07" (3/3) ... [2019-12-07 17:58:07,598 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121b.c [2019-12-07 17:58:07,604 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:58:07,608 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 17:58:07,615 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 17:58:07,631 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:58:07,631 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 17:58:07,631 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:58:07,631 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:58:07,631 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:58:07,631 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:58:07,631 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:58:07,631 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:58:07,642 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2019-12-07 17:58:07,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 17:58:07,646 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:58:07,646 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:58:07,647 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:58:07,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:58:07,650 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2019-12-07 17:58:07,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:58:07,658 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1507716722] [2019-12-07 17:58:07,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/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 17:58:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:58:08,476 INFO L264 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 17:58:08,480 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:58:08,491 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 17:58:08,491 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 17:58:08,494 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 17:58:08,494 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1507716722] [2019-12-07 17:58:08,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:58:08,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 17:58:08,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142048039] [2019-12-07 17:58:08,498 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 17:58:08,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 17:58:08,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 17:58:08,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 17:58:08,509 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2019-12-07 17:58:08,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:58:08,524 INFO L93 Difference]: Finished difference Result 108 states and 190 transitions. [2019-12-07 17:58:08,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 17:58:08,525 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 17:58:08,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:58:08,532 INFO L225 Difference]: With dead ends: 108 [2019-12-07 17:58:08,532 INFO L226 Difference]: Without dead ends: 52 [2019-12-07 17:58:08,534 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 17:58:08,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-12-07 17:58:08,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2019-12-07 17:58:08,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-12-07 17:58:08,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2019-12-07 17:58:08,560 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2019-12-07 17:58:08,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:58:08,560 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2019-12-07 17:58:08,561 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 17:58:08,561 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2019-12-07 17:58:08,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 17:58:08,561 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:58:08,561 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:58:08,762 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 17:58:08,763 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:58:08,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:58:08,763 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2019-12-07 17:58:08,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:58:08,766 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799846427] [2019-12-07 17:58:08,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/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 17:58:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:58:09,720 INFO L264 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 17:58:09,722 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:58:20,943 WARN L192 SmtUtils]: Spent 2.94 s on a formula simplification that was a NOOP. DAG size: 9 [2019-12-07 17:58:20,946 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:58:28,766 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 17:58:28,767 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 17:58:40,016 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_double_~x c_ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) is different from true [2019-12-07 17:58:41,974 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 17:58:41,974 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799846427] [2019-12-07 17:58:41,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:58:41,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2019-12-07 17:58:41,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081404108] [2019-12-07 17:58:41,976 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-07 17:58:41,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 17:58:41,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-07 17:58:41,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2019-12-07 17:58:41,977 INFO L87 Difference]: Start difference. First operand 52 states and 78 transitions. Second operand 11 states. [2019-12-07 17:58:45,456 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_fmod_double_~y (fp.neg (_ +zero 11 53))) (forall ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_double_~x c_ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0))))) is different from true [2019-12-07 17:59:13,485 WARN L192 SmtUtils]: Spent 15.72 s on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2019-12-07 17:59:38,902 WARN L192 SmtUtils]: Spent 18.34 s on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2019-12-07 17:59:39,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:59:39,292 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2019-12-07 17:59:39,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 17:59:39,330 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2019-12-07 17:59:39,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:59:39,331 INFO L225 Difference]: With dead ends: 57 [2019-12-07 17:59:39,331 INFO L226 Difference]: Without dead ends: 52 [2019-12-07 17:59:39,332 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 85.8s TimeCoverageRelationStatistics Valid=41, Invalid=96, Unknown=3, NotChecked=42, Total=182 [2019-12-07 17:59:39,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-12-07 17:59:39,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2019-12-07 17:59:39,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-12-07 17:59:39,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 77 transitions. [2019-12-07 17:59:39,338 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 77 transitions. Word has length 12 [2019-12-07 17:59:39,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:59:39,339 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 77 transitions. [2019-12-07 17:59:39,339 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-07 17:59:39,339 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 77 transitions. [2019-12-07 17:59:39,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 17:59:39,340 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:59:39,340 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:59:39,540 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 17:59:39,542 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:59:39,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:59:39,543 INFO L82 PathProgramCache]: Analyzing trace with hash -910533226, now seen corresponding path program 1 times [2019-12-07 17:59:39,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:59:39,545 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044233657] [2019-12-07 17:59:39,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/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 17:59:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:59:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:59:39,857 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-12-07 17:59:39,858 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 17:59:40,058 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 17:59:40,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:59:40 BoogieIcfgContainer [2019-12-07 17:59:40,117 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:59:40,117 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:59:40,117 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:59:40,117 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:59:40,118 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:58:07" (3/4) ... [2019-12-07 17:59:40,119 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 17:59:40,154 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_55831229-123c-4705-9966-db13aa704883/bin/uautomizer/witness.graphml [2019-12-07 17:59:40,154 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:59:40,155 INFO L168 Benchmark]: Toolchain (without parser) took 96222.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 952.4 MB in the beginning and 968.0 MB in the end (delta: -15.6 MB). Peak memory consumption was 110.2 MB. Max. memory is 11.5 GB. [2019-12-07 17:59:40,156 INFO L168 Benchmark]: CDTParser took 0.18 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 17:59:40,156 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -162.5 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2019-12-07 17:59:40,156 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.03 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 17:59:40,157 INFO L168 Benchmark]: Boogie Preprocessor took 29.45 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-12-07 17:59:40,157 INFO L168 Benchmark]: RCFGBuilder took 3335.71 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: 33.8 MB). Peak memory consumption was 33.8 MB. Max. memory is 11.5 GB. [2019-12-07 17:59:40,157 INFO L168 Benchmark]: TraceAbstraction took 92522.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 974.9 MB in the end (delta: 99.2 MB). Peak memory consumption was 99.2 MB. Max. memory is 11.5 GB. [2019-12-07 17:59:40,158 INFO L168 Benchmark]: Witness Printer took 37.40 ms. Allocated memory is still 1.2 GB. Free memory was 974.9 MB in the beginning and 968.0 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-12-07 17:59:40,159 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 260.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -162.5 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.03 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 29.45 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 3335.71 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: 33.8 MB). Peak memory consumption was 33.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 92522.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 974.9 MB in the end (delta: 99.2 MB). Peak memory consumption was 99.2 MB. Max. memory is 11.5 GB. * Witness Printer took 37.40 ms. Allocated memory is still 1.2 GB. Free memory was 974.9 MB in the beginning and 968.0 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 175]: 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}] [L169] double x = __VERIFIER_nondet_double(); [L170] double 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 FALSE !((hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000)) VAL [one_fmod=1.0, Zero_fmod={2:0}] [L46] COND TRUE hx <= hy VAL [one_fmod=1.0, Zero_fmod={2:0}] [L47] COND TRUE (hx < hy) || (lx < ly) [L48] return x; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L171] double res = fmod_double(x, y); [L16] return x != x; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L174] COND TRUE !isnan_double(res) [L175] __VERIFIER_error() VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 55 locations, 1 error locations. Result: UNSAFE, OverallTime: 92.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 57.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 155 SDtfs, 4 SDslu, 335 SDs, 0 SdLazy, 21 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 85.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred 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, 1.6s SatisfiabilityAnalysisTime, 32.4s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 7 QuantifiedInterpolants, 2637 SizeOfPredicates, 11 NumberOfNonLiveVariables, 104 ConjunctsInSsa, 12 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! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...