./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1032d.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_b881a65f-c0a9-4e99-869e-e646b306a412/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/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 bc388f4eaa6aadf687b7d35c78a026571921b2b6 ........................................................................................................................................................................................................................................................................................... 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_b881a65f-c0a9-4e99-869e-e646b306a412/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/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 bc388f4eaa6aadf687b7d35c78a026571921b2b6 ..................................................................................................................................................................................................................................................................................................................................................... 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 17:06:02,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:06:02,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:06:02,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:06:02,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:06:02,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:06:02,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:06:02,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:06:02,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:06:02,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:06:02,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:06:02,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:06:02,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:06:02,449 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:06:02,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:06:02,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:06:02,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:06:02,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:06:02,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:06:02,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:06:02,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:06:02,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:06:02,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:06:02,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:06:02,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:06:02,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:06:02,459 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:06:02,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:06:02,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:06:02,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:06:02,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:06:02,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:06:02,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:06:02,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:06:02,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:06:02,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:06:02,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:06:02,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:06:02,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:06:02,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:06:02,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:06:02,465 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 17:06:02,474 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:06:02,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:06:02,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:06:02,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:06:02,476 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:06:02,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:06:02,476 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:06:02,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:06:02,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:06:02,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:06:02,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 17:06:02,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:06:02,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 17:06:02,477 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:06:02,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:06:02,477 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:06:02,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 17:06:02,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:06:02,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:06:02,478 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:06:02,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:06:02,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:06:02,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:06:02,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:06:02,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 17:06:02,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:06:02,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 17:06:02,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 17:06:02,479 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:06:02,479 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_b881a65f-c0a9-4e99-869e-e646b306a412/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 -> bc388f4eaa6aadf687b7d35c78a026571921b2b6 [2019-12-07 17:06:02,576 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:06:02,584 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:06:02,586 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:06:02,587 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:06:02,587 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:06:02,588 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2019-12-07 17:06:02,625 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/bin/uautomizer/data/a1a1158be/23d9eb007ce14fa4bb759fb2c26943c9/FLAG6fdcf150e [2019-12-07 17:06:03,097 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:06:03,097 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2019-12-07 17:06:03,102 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/bin/uautomizer/data/a1a1158be/23d9eb007ce14fa4bb759fb2c26943c9/FLAG6fdcf150e [2019-12-07 17:06:03,110 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/bin/uautomizer/data/a1a1158be/23d9eb007ce14fa4bb759fb2c26943c9 [2019-12-07 17:06:03,112 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:06:03,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:06:03,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:06:03,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:06:03,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:06:03,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:06:03" (1/1) ... [2019-12-07 17:06:03,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48b8aa41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:03, skipping insertion in model container [2019-12-07 17:06:03,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:06:03" (1/1) ... [2019-12-07 17:06:03,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:06:03,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:06:03,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:06:03,284 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:06:03,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:06:03,319 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:06:03,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:03 WrapperNode [2019-12-07 17:06:03,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:06:03,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:06:03,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:06:03,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:06:03,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:03" (1/1) ... [2019-12-07 17:06:03,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:03" (1/1) ... [2019-12-07 17:06:03,348 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:06:03,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:06:03,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:06:03,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:06:03,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:03" (1/1) ... [2019-12-07 17:06:03,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:03" (1/1) ... [2019-12-07 17:06:03,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:03" (1/1) ... [2019-12-07 17:06:03,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:03" (1/1) ... [2019-12-07 17:06:03,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:03" (1/1) ... [2019-12-07 17:06:03,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:03" (1/1) ... [2019-12-07 17:06:03,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:03" (1/1) ... [2019-12-07 17:06:03,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:06:03,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:06:03,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:06:03,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:06:03,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/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 17:06:03,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-07 17:06:03,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 17:06:03,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 17:06:03,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:06:03,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:06:03,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 17:06:03,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 17:06:03,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 17:06:03,591 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:06:03,592 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-12-07 17:06:03,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:06:03 BoogieIcfgContainer [2019-12-07 17:06:03,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:06:03,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:06:03,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:06:03,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:06:03,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:06:03" (1/3) ... [2019-12-07 17:06:03,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5935298e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:06:03, skipping insertion in model container [2019-12-07 17:06:03,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:03" (2/3) ... [2019-12-07 17:06:03,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5935298e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:06:03, skipping insertion in model container [2019-12-07 17:06:03,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:06:03" (3/3) ... [2019-12-07 17:06:03,597 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032d.c [2019-12-07 17:06:03,604 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:06:03,608 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 17:06:03,615 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 17:06:03,630 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:06:03,630 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 17:06:03,630 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:06:03,630 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:06:03,630 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:06:03,630 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:06:03,630 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:06:03,631 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:06:03,641 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-12-07 17:06:03,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 17:06:03,646 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:06:03,646 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:06:03,647 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:06:03,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:06:03,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2019-12-07 17:06:03,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:06:03,656 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145314287] [2019-12-07 17:06:03,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:06:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:06:03,729 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 17:06:03,729 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145314287] [2019-12-07 17:06:03,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:06:03,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 17:06:03,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023116871] [2019-12-07 17:06:03,733 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 17:06:03,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:06:03,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 17:06:03,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 17:06:03,743 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2019-12-07 17:06:03,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:06:03,755 INFO L93 Difference]: Finished difference Result 56 states and 84 transitions. [2019-12-07 17:06:03,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 17:06:03,756 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-12-07 17:06:03,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:06:03,763 INFO L225 Difference]: With dead ends: 56 [2019-12-07 17:06:03,763 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 17:06:03,765 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 17:06:03,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 17:06:03,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-07 17:06:03,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 17:06:03,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2019-12-07 17:06:03,787 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2019-12-07 17:06:03,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:06:03,787 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-12-07 17:06:03,787 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 17:06:03,787 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2019-12-07 17:06:03,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 17:06:03,788 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:06:03,788 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:06:03,788 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:06:03,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:06:03,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2019-12-07 17:06:03,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:06:03,789 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852774077] [2019-12-07 17:06:03,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:06:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:06:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:06:03,896 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:06:03,896 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 17:06:03,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:06:03 BoogieIcfgContainer [2019-12-07 17:06:03,915 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:06:03,915 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:06:03,915 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:06:03,916 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:06:03,916 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:06:03" (3/4) ... [2019-12-07 17:06:03,918 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 17:06:03,918 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:06:03,920 INFO L168 Benchmark]: Toolchain (without parser) took 806.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.0 MB). Free memory was 944.8 MB in the beginning and 1.0 GB in the end (delta: -90.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-12-07 17:06:03,920 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:06:03,921 INFO L168 Benchmark]: CACSL2BoogieTranslator took 206.13 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.0 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -158.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 17:06:03,921 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.43 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 17:06:03,922 INFO L168 Benchmark]: Boogie Preprocessor took 20.81 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 17:06:03,922 INFO L168 Benchmark]: RCFGBuilder took 223.29 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-12-07 17:06:03,923 INFO L168 Benchmark]: TraceAbstraction took 321.84 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: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2019-12-07 17:06:03,923 INFO L168 Benchmark]: Witness Printer took 3.16 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 17:06:03,926 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 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 206.13 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.0 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -158.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.43 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 20.81 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 223.29 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 321.84 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: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.16 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: 91]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 31, overapproximation of bitwiseOr at line 73, overapproximation of someBinaryArithmeticDOUBLEoperation at line 86, overapproximation of bitwiseAnd at line 72. Possible FailurePath: [L86] double x = -1.0 / 0.0; [L15] __int32_t msw, exponent_less_1023; [L16] __uint32_t lsw; [L18] ieee_double_shape_type ew_u; [L19] ew_u.value = (x) [L20] EXPR ew_u.parts.msw [L20] (msw) = ew_u.parts.msw [L21] EXPR ew_u.parts.lsw [L21] (lsw) = ew_u.parts.lsw [L23] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L24] COND TRUE exponent_less_1023 < 20 [L25] COND FALSE !(exponent_less_1023 < 0) [L31] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L32] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L33] return x; [L87] double res = round_double(x); [L65] __int32_t hx, lx; [L67] ieee_double_shape_type ew_u; [L68] ew_u.value = (x) [L69] EXPR ew_u.parts.msw [L69] (hx) = ew_u.parts.msw [L70] EXPR ew_u.parts.lsw [L70] (lx) = ew_u.parts.lsw [L72] hx &= 0x7fffffff [L73] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L74] hx = 0x7ff00000 - hx [L75] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L91] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 36 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=29occurred 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 17:06:05,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:06:05,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:06:05,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:06:05,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:06:05,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:06:05,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:06:05,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:06:05,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:06:05,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:06:05,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:06:05,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:06:05,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:06:05,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:06:05,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:06:05,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:06:05,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:06:05,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:06:05,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:06:05,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:06:05,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:06:05,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:06:05,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:06:05,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:06:05,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:06:05,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:06:05,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:06:05,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:06:05,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:06:05,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:06:05,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:06:05,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:06:05,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:06:05,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:06:05,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:06:05,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:06:05,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:06:05,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:06:05,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:06:05,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:06:05,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:06:05,422 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 17:06:05,431 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:06:05,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:06:05,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:06:05,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:06:05,433 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:06:05,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:06:05,433 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:06:05,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:06:05,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:06:05,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 17:06:05,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:06:05,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 17:06:05,434 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 17:06:05,434 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 17:06:05,434 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:06:05,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:06:05,434 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:06:05,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 17:06:05,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:06:05,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:06:05,435 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:06:05,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:06:05,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:06:05,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:06:05,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:06:05,435 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 17:06:05,436 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 17:06:05,436 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 17:06:05,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 17:06:05,436 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:06:05,436 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 17:06:05,436 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_b881a65f-c0a9-4e99-869e-e646b306a412/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 -> bc388f4eaa6aadf687b7d35c78a026571921b2b6 [2019-12-07 17:06:05,615 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:06:05,622 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:06:05,625 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:06:05,626 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:06:05,626 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:06:05,626 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2019-12-07 17:06:05,665 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/bin/uautomizer/data/5d5b5838d/282c10773dff48d1b474cc26e7f54eda/FLAG2de040500 [2019-12-07 17:06:06,135 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:06:06,135 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2019-12-07 17:06:06,139 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/bin/uautomizer/data/5d5b5838d/282c10773dff48d1b474cc26e7f54eda/FLAG2de040500 [2019-12-07 17:06:06,647 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/bin/uautomizer/data/5d5b5838d/282c10773dff48d1b474cc26e7f54eda [2019-12-07 17:06:06,649 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:06:06,650 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:06:06,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:06:06,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:06:06,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:06:06,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:06:06" (1/1) ... [2019-12-07 17:06:06,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@346e9d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:06, skipping insertion in model container [2019-12-07 17:06:06,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:06:06" (1/1) ... [2019-12-07 17:06:06,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:06:06,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:06:06,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:06:06,789 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:06:06,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:06:06,858 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:06:06,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:06 WrapperNode [2019-12-07 17:06:06,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:06:06,858 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:06:06,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:06:06,859 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:06:06,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:06" (1/1) ... [2019-12-07 17:06:06,874 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:06" (1/1) ... [2019-12-07 17:06:06,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:06:06,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:06:06,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:06:06,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:06:06,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:06" (1/1) ... [2019-12-07 17:06:06,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:06" (1/1) ... [2019-12-07 17:06:06,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:06" (1/1) ... [2019-12-07 17:06:06,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:06" (1/1) ... [2019-12-07 17:06:06,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:06" (1/1) ... [2019-12-07 17:06:06,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:06" (1/1) ... [2019-12-07 17:06:06,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:06" (1/1) ... [2019-12-07 17:06:06,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:06:06,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:06:06,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:06:06,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:06:06,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/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 17:06:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-12-07 17:06:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-07 17:06:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 17:06:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 17:06:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:06:06,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:06:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 17:06:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 17:06:07,224 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:06:07,224 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-12-07 17:06:07,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:06:07 BoogieIcfgContainer [2019-12-07 17:06:07,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:06:07,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:06:07,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:06:07,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:06:07,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:06:06" (1/3) ... [2019-12-07 17:06:07,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@670e20a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:06:07, skipping insertion in model container [2019-12-07 17:06:07,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:06:06" (2/3) ... [2019-12-07 17:06:07,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@670e20a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:06:07, skipping insertion in model container [2019-12-07 17:06:07,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:06:07" (3/3) ... [2019-12-07 17:06:07,230 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032d.c [2019-12-07 17:06:07,236 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:06:07,240 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 17:06:07,247 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 17:06:07,262 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:06:07,262 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 17:06:07,262 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:06:07,262 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:06:07,262 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:06:07,262 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:06:07,262 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:06:07,262 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:06:07,271 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-12-07 17:06:07,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 17:06:07,275 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:06:07,275 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:06:07,275 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:06:07,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:06:07,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2019-12-07 17:06:07,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:06:07,286 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651537643] [2019-12-07 17:06:07,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/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 17:06:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:06:07,351 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 17:06:07,354 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:06:07,363 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 17:06:07,363 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 17:06:07,366 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 17:06:07,367 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651537643] [2019-12-07 17:06:07,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:06:07,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 17:06:07,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996212922] [2019-12-07 17:06:07,371 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 17:06:07,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 17:06:07,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 17:06:07,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 17:06:07,385 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2019-12-07 17:06:07,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:06:07,397 INFO L93 Difference]: Finished difference Result 56 states and 84 transitions. [2019-12-07 17:06:07,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 17:06:07,399 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-12-07 17:06:07,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:06:07,408 INFO L225 Difference]: With dead ends: 56 [2019-12-07 17:06:07,408 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 17:06:07,410 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 17:06:07,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 17:06:07,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-07 17:06:07,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 17:06:07,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2019-12-07 17:06:07,438 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2019-12-07 17:06:07,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:06:07,439 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-12-07 17:06:07,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 17:06:07,439 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2019-12-07 17:06:07,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 17:06:07,439 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:06:07,439 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:06:07,640 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 17:06:07,641 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:06:07,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:06:07,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2019-12-07 17:06:07,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:06:07,645 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826196112] [2019-12-07 17:06:07,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/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 17:06:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:06:07,792 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 17:06:07,794 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:06:07,896 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 17:06:07,896 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 17:06:08,010 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 17:06:08,010 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826196112] [2019-12-07 17:06:08,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:06:08,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-12-07 17:06:08,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703922549] [2019-12-07 17:06:08,011 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 17:06:08,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 17:06:08,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 17:06:08,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-12-07 17:06:08,012 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 8 states. [2019-12-07 17:06:08,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:06:08,254 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2019-12-07 17:06:08,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 17:06:08,255 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-12-07 17:06:08,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:06:08,255 INFO L225 Difference]: With dead ends: 34 [2019-12-07 17:06:08,255 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 17:06:08,256 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 17:06:08,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 17:06:08,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 17:06:08,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 17:06:08,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2019-12-07 17:06:08,259 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 15 [2019-12-07 17:06:08,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:06:08,260 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2019-12-07 17:06:08,260 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 17:06:08,260 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2019-12-07 17:06:08,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 17:06:08,260 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:06:08,260 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:06:08,461 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 17:06:08,462 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:06:08,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:06:08,463 INFO L82 PathProgramCache]: Analyzing trace with hash 709099857, now seen corresponding path program 1 times [2019-12-07 17:06:08,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:06:08,465 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013037085] [2019-12-07 17:06:08,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/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 17:06:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:06:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:06:08,756 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-12-07 17:06:08,756 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 17:06:08,957 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 17:06:08,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:06:08 BoogieIcfgContainer [2019-12-07 17:06:08,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:06:08,983 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:06:08,984 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:06:08,984 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:06:08,984 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:06:07" (3/4) ... [2019-12-07 17:06:08,986 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 17:06:09,023 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b881a65f-c0a9-4e99-869e-e646b306a412/bin/uautomizer/witness.graphml [2019-12-07 17:06:09,023 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:06:09,025 INFO L168 Benchmark]: Toolchain (without parser) took 2374.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 951.0 MB in the beginning and 1.0 GB in the end (delta: -50.5 MB). Peak memory consumption was 78.5 MB. Max. memory is 11.5 GB. [2019-12-07 17:06:09,025 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 17:06:09,025 INFO L168 Benchmark]: CACSL2BoogieTranslator took 207.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -174.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2019-12-07 17:06:09,026 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.78 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-12-07 17:06:09,026 INFO L168 Benchmark]: Boogie Preprocessor took 24.14 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 17:06:09,026 INFO L168 Benchmark]: RCFGBuilder took 306.61 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: 30.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. [2019-12-07 17:06:09,026 INFO L168 Benchmark]: TraceAbstraction took 1757.25 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: 86.5 MB). Peak memory consumption was 86.5 MB. Max. memory is 11.5 GB. [2019-12-07 17:06:09,027 INFO L168 Benchmark]: Witness Printer took 39.84 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 17:06:09,029 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 207.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -174.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.78 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.14 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 306.61 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: 30.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1757.25 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: 86.5 MB). Peak memory consumption was 86.5 MB. Max. memory is 11.5 GB. * Witness Printer took 39.84 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: 91]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L86] double x = -1.0 / 0.0; [L15] __int32_t msw, exponent_less_1023; [L16] __uint32_t lsw; [L18] ieee_double_shape_type ew_u; [L19] ew_u.value = (x) [L20] EXPR ew_u.parts.msw [L20] (msw) = ew_u.parts.msw [L21] EXPR ew_u.parts.lsw [L21] (lsw) = ew_u.parts.lsw [L23] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L24] COND FALSE !(exponent_less_1023 < 20) [L38] COND TRUE exponent_less_1023 > 51 [L39] COND TRUE exponent_less_1023 == 1024 [L40] return x + x; [L87] double res = round_double(x); [L65] __int32_t hx, lx; [L67] ieee_double_shape_type ew_u; [L68] ew_u.value = (x) [L69] EXPR ew_u.parts.msw [L69] (hx) = ew_u.parts.msw [L70] EXPR ew_u.parts.lsw [L70] (lx) = ew_u.parts.lsw [L72] hx &= 0x7fffffff [L73] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L74] hx = 0x7ff00000 - hx [L75] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L91] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 44 SDslu, 6 SDs, 0 SdLazy, 9 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=29occurred 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, 2332 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...