./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1032c.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1032c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dc0a2ba7c478f7aa42412993fd58e9bd96a2d03f ...................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1032c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dc0a2ba7c478f7aa42412993fd58e9bd96a2d03f .............................................................................................................................................................................................................................................................................................................................................................. 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 0.2.0-a4ecdab [2020-11-30 01:16:31,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:16:31,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:16:31,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:16:31,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:16:31,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:16:31,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:16:31,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:16:31,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:16:31,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:16:31,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:16:31,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:16:31,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:16:31,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:16:31,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:16:31,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:16:31,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:16:31,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:16:31,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:16:31,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:16:31,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:16:31,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:16:31,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:16:31,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:16:31,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:16:31,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:16:31,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:16:31,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:16:31,374 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:16:31,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:16:31,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:16:31,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:16:31,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:16:31,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:16:31,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:16:31,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:16:31,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:16:31,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:16:31,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:16:31,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:16:31,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:16:31,391 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 01:16:31,425 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:16:31,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:16:31,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:16:31,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:16:31,428 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:16:31,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:16:31,429 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:16:31,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:16:31,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:16:31,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:16:31,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:16:31,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:16:31,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:16:31,431 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:16:31,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:16:31,431 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:16:31,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:16:31,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:16:31,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:16:31,433 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:16:31,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:16:31,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:16:31,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:16:31,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:16:31,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:16:31,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:16:31,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:16:31,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:16:31,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:16:31,436 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc0a2ba7c478f7aa42412993fd58e9bd96a2d03f [2020-11-30 01:16:31,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:16:31,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:16:31,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:16:31,796 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:16:31,799 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:16:31,801 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1032c.c [2020-11-30 01:16:31,914 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/bin/uautomizer/data/b58aed53c/0eb7ed24f9b5468e9561df10327d476d/FLAG9e0ad8e6d [2020-11-30 01:16:32,584 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:16:32,585 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/sv-benchmarks/c/float-newlib/double_req_bl_1032c.c [2020-11-30 01:16:32,593 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/bin/uautomizer/data/b58aed53c/0eb7ed24f9b5468e9561df10327d476d/FLAG9e0ad8e6d [2020-11-30 01:16:32,901 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/bin/uautomizer/data/b58aed53c/0eb7ed24f9b5468e9561df10327d476d [2020-11-30 01:16:32,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:16:32,907 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:16:32,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:16:32,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:16:32,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:16:32,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:16:32" (1/1) ... [2020-11-30 01:16:32,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e38a360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:32, skipping insertion in model container [2020-11-30 01:16:32,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:16:32" (1/1) ... [2020-11-30 01:16:32,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:16:32,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:16:33,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:16:33,154 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:16:33,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:16:33,215 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:16:33,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:33 WrapperNode [2020-11-30 01:16:33,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:16:33,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:16:33,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:16:33,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:16:33,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:33" (1/1) ... [2020-11-30 01:16:33,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:33" (1/1) ... [2020-11-30 01:16:33,272 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:16:33,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:16:33,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:16:33,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:16:33,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:33" (1/1) ... [2020-11-30 01:16:33,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:33" (1/1) ... [2020-11-30 01:16:33,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:33" (1/1) ... [2020-11-30 01:16:33,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:33" (1/1) ... [2020-11-30 01:16:33,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:33" (1/1) ... [2020-11-30 01:16:33,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:33" (1/1) ... [2020-11-30 01:16:33,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:33" (1/1) ... [2020-11-30 01:16:33,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:16:33,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:16:33,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:16:33,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:16:33,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/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 [2020-11-30 01:16:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:16:33,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:16:33,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-30 01:16:33,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 01:16:33,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 01:16:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:16:33,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:16:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 01:16:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:16:34,081 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:16:34,082 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-30 01:16:34,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:16:34 BoogieIcfgContainer [2020-11-30 01:16:34,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:16:34,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:16:34,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:16:34,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:16:34,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:16:32" (1/3) ... [2020-11-30 01:16:34,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410f59ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:16:34, skipping insertion in model container [2020-11-30 01:16:34,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:33" (2/3) ... [2020-11-30 01:16:34,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410f59ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:16:34, skipping insertion in model container [2020-11-30 01:16:34,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:16:34" (3/3) ... [2020-11-30 01:16:34,098 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032c.c [2020-11-30 01:16:34,114 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:16:34,121 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:16:34,152 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:16:34,206 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:16:34,207 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:16:34,208 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:16:34,208 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:16:34,208 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:16:34,208 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:16:34,209 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:16:34,209 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:16:34,230 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-11-30 01:16:34,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 01:16:34,241 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:16:34,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:16:34,244 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:16:34,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:16:34,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2020-11-30 01:16:34,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:16:34,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104241861] [2020-11-30 01:16:34,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:16:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:16:34,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:16:34,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104241861] [2020-11-30 01:16:34,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:16:34,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:16:34,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517680876] [2020-11-30 01:16:34,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:16:34,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:16:34,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:16:34,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:16:34,543 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-11-30 01:16:34,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:16:34,577 INFO L93 Difference]: Finished difference Result 57 states and 85 transitions. [2020-11-30 01:16:34,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:16:34,579 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-30 01:16:34,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:16:34,603 INFO L225 Difference]: With dead ends: 57 [2020-11-30 01:16:34,605 INFO L226 Difference]: Without dead ends: 26 [2020-11-30 01:16:34,609 INFO L677 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 [2020-11-30 01:16:34,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-30 01:16:34,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-30 01:16:34,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-30 01:16:34,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-11-30 01:16:34,660 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2020-11-30 01:16:34,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:16:34,661 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-11-30 01:16:34,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:16:34,661 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-11-30 01:16:34,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 01:16:34,662 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:16:34,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:16:34,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:16:34,663 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:16:34,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:16:34,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2020-11-30 01:16:34,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:16:34,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867497251] [2020-11-30 01:16:34,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:16:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:16:34,844 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:16:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:16:35,024 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:16:35,087 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:16:35,087 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:16:35,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:16:35,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:16:35 BoogieIcfgContainer [2020-11-30 01:16:35,150 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:16:35,151 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:16:35,152 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:16:35,152 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:16:35,153 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:16:34" (3/4) ... [2020-11-30 01:16:35,158 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:16:35,158 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:16:35,162 INFO L168 Benchmark]: Toolchain (without parser) took 2252.67 ms. Allocated memory is still 96.5 MB. Free memory was 67.2 MB in the beginning and 70.3 MB in the end (delta: -3.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:16:35,164 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 77.6 MB. Free memory was 44.6 MB in the beginning and 44.6 MB in the end (delta: 40.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:16:35,166 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.18 ms. Allocated memory is still 96.5 MB. Free memory was 67.0 MB in the beginning and 56.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:35,167 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.89 ms. Allocated memory is still 96.5 MB. Free memory was 56.3 MB in the beginning and 54.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:35,170 INFO L168 Benchmark]: Boogie Preprocessor took 42.88 ms. Allocated memory is still 96.5 MB. Free memory was 54.4 MB in the beginning and 52.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:35,171 INFO L168 Benchmark]: RCFGBuilder took 767.36 ms. Allocated memory is still 96.5 MB. Free memory was 52.8 MB in the beginning and 64.8 MB in the end (delta: -11.9 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:35,172 INFO L168 Benchmark]: TraceAbstraction took 1064.15 ms. Allocated memory is still 96.5 MB. Free memory was 64.2 MB in the beginning and 70.7 MB in the end (delta: -6.6 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:35,174 INFO L168 Benchmark]: Witness Printer took 6.75 ms. Allocated memory is still 96.5 MB. Free memory is still 70.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:16:35,186 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 77.6 MB. Free memory was 44.6 MB in the beginning and 44.6 MB in the end (delta: 40.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 307.18 ms. Allocated memory is still 96.5 MB. Free memory was 67.0 MB in the beginning and 56.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.89 ms. Allocated memory is still 96.5 MB. Free memory was 56.3 MB in the beginning and 54.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.88 ms. Allocated memory is still 96.5 MB. Free memory was 54.4 MB in the beginning and 52.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 767.36 ms. Allocated memory is still 96.5 MB. Free memory was 52.8 MB in the beginning and 64.8 MB in the end (delta: -11.9 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1064.15 ms. Allocated memory is still 96.5 MB. Free memory was 64.2 MB in the beginning and 70.7 MB in the end (delta: -6.6 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. * Witness Printer took 6.75 ms. Allocated memory is still 96.5 MB. Free memory is still 70.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 33, overapproximation of bitwiseOr at line 75, overapproximation of someBinaryArithmeticDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 74. Possible FailurePath: [L88] double x = 1.0 / 0.0; [L17] __int32_t msw, exponent_less_1023; [L18] __uint32_t lsw; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (msw) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (lsw) = ew_u.parts.lsw [L25] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L26] COND TRUE exponent_less_1023 < 20 [L27] COND FALSE !(exponent_less_1023 < 0) [L33] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L34] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L35] return x; [L89] double res = round_double(x); [L67] __int32_t hx, lx; [L69] ieee_double_shape_type ew_u; [L70] ew_u.value = (x) [L71] EXPR ew_u.parts.msw [L71] (hx) = ew_u.parts.msw [L72] EXPR ew_u.parts.lsw [L72] (lx) = ew_u.parts.lsw [L74] hx &= 0x7fffffff [L75] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L76] hx = 0x7ff00000 - hx [L77] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L92] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1032c.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 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=30occurred 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, 0.2s 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, ACCELERATED_INTERPOLATION: 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 0.2.0-a4ecdab [2020-11-30 01:16:38,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:16:38,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:16:38,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:16:38,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:16:38,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:16:38,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:16:38,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:16:38,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:16:38,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:16:38,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:16:38,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:16:38,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:16:38,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:16:38,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:16:38,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:16:38,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:16:38,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:16:38,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:16:38,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:16:38,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:16:38,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:16:38,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:16:38,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:16:38,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:16:38,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:16:38,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:16:38,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:16:38,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:16:38,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:16:38,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:16:38,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:16:38,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:16:38,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:16:38,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:16:38,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:16:38,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:16:38,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:16:38,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:16:38,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:16:38,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:16:38,700 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 01:16:38,761 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:16:38,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:16:38,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:16:38,764 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:16:38,765 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:16:38,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:16:38,765 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:16:38,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:16:38,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:16:38,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:16:38,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:16:38,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:16:38,767 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 01:16:38,767 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 01:16:38,768 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:16:38,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:16:38,768 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:16:38,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:16:38,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:16:38,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:16:38,770 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:16:38,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:16:38,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:16:38,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:16:38,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:16:38,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:16:38,771 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 01:16:38,772 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 01:16:38,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:16:38,772 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:16:38,773 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:16:38,773 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc0a2ba7c478f7aa42412993fd58e9bd96a2d03f [2020-11-30 01:16:39,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:16:39,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:16:39,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:16:39,360 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:16:39,363 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:16:39,364 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1032c.c [2020-11-30 01:16:39,464 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/bin/uautomizer/data/c8e84cf42/9cbbb0dcae1f47b2a1303ad0573d7355/FLAG620aaf08b [2020-11-30 01:16:40,169 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:16:40,169 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/sv-benchmarks/c/float-newlib/double_req_bl_1032c.c [2020-11-30 01:16:40,188 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/bin/uautomizer/data/c8e84cf42/9cbbb0dcae1f47b2a1303ad0573d7355/FLAG620aaf08b [2020-11-30 01:16:40,514 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/bin/uautomizer/data/c8e84cf42/9cbbb0dcae1f47b2a1303ad0573d7355 [2020-11-30 01:16:40,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:16:40,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:16:40,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:16:40,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:16:40,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:16:40,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:16:40" (1/1) ... [2020-11-30 01:16:40,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4053a965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:40, skipping insertion in model container [2020-11-30 01:16:40,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:16:40" (1/1) ... [2020-11-30 01:16:40,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:16:40,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:16:40,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:16:40,883 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:16:40,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:16:41,084 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:16:41,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:41 WrapperNode [2020-11-30 01:16:41,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:16:41,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:16:41,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:16:41,090 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:16:41,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:41" (1/1) ... [2020-11-30 01:16:41,132 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:41" (1/1) ... [2020-11-30 01:16:41,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:16:41,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:16:41,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:16:41,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:16:41,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:41" (1/1) ... [2020-11-30 01:16:41,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:41" (1/1) ... [2020-11-30 01:16:41,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:41" (1/1) ... [2020-11-30 01:16:41,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:41" (1/1) ... [2020-11-30 01:16:41,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:41" (1/1) ... [2020-11-30 01:16:41,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:41" (1/1) ... [2020-11-30 01:16:41,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:41" (1/1) ... [2020-11-30 01:16:41,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:16:41,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:16:41,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:16:41,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:16:41,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/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 [2020-11-30 01:16:41,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-30 01:16:41,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-30 01:16:41,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 01:16:41,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:16:41,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 01:16:41,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:16:41,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:16:41,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 01:16:41,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:16:42,375 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:16:42,376 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-30 01:16:42,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:16:42 BoogieIcfgContainer [2020-11-30 01:16:42,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:16:42,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:16:42,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:16:42,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:16:42,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:16:40" (1/3) ... [2020-11-30 01:16:42,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6b6469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:16:42, skipping insertion in model container [2020-11-30 01:16:42,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:41" (2/3) ... [2020-11-30 01:16:42,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6b6469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:16:42, skipping insertion in model container [2020-11-30 01:16:42,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:16:42" (3/3) ... [2020-11-30 01:16:42,390 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032c.c [2020-11-30 01:16:42,404 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:16:42,410 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:16:42,427 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:16:42,467 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:16:42,467 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:16:42,467 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:16:42,468 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:16:42,468 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:16:42,468 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:16:42,468 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:16:42,468 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:16:42,484 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-11-30 01:16:42,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 01:16:42,491 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:16:42,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:16:42,493 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:16:42,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:16:42,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2020-11-30 01:16:42,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:16:42,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673569383] [2020-11-30 01:16:42,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/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 [2020-11-30 01:16:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:16:42,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 01:16:42,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:16:42,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:16:42,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:16:42,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:16:42,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673569383] [2020-11-30 01:16:42,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:16:42,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 01:16:42,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810028491] [2020-11-30 01:16:42,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:16:42,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:16:42,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:16:42,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:16:42,834 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-11-30 01:16:42,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:16:42,862 INFO L93 Difference]: Finished difference Result 57 states and 85 transitions. [2020-11-30 01:16:42,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:16:42,864 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-30 01:16:42,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:16:42,879 INFO L225 Difference]: With dead ends: 57 [2020-11-30 01:16:42,879 INFO L226 Difference]: Without dead ends: 26 [2020-11-30 01:16:42,883 INFO L677 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 [2020-11-30 01:16:42,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-30 01:16:42,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-30 01:16:42,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-30 01:16:42,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-11-30 01:16:42,940 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2020-11-30 01:16:42,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:16:42,941 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-11-30 01:16:42,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:16:42,941 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-11-30 01:16:42,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 01:16:42,942 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:16:42,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:16:43,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 01:16:43,157 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:16:43,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:16:43,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2020-11-30 01:16:43,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:16:43,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245215458] [2020-11-30 01:16:43,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/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 [2020-11-30 01:16:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:16:43,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:16:43,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:16:43,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:16:43,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:16:43,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:16:43,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245215458] [2020-11-30 01:16:43,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:16:43,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-30 01:16:43,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624425970] [2020-11-30 01:16:43,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 01:16:43,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:16:43,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:16:43,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:16:43,868 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 8 states. [2020-11-30 01:16:44,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:16:44,275 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2020-11-30 01:16:44,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:16:44,278 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-30 01:16:44,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:16:44,280 INFO L225 Difference]: With dead ends: 34 [2020-11-30 01:16:44,281 INFO L226 Difference]: Without dead ends: 16 [2020-11-30 01:16:44,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:16:44,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-30 01:16:44,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-30 01:16:44,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 01:16:44,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-11-30 01:16:44,298 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 15 [2020-11-30 01:16:44,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:16:44,299 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-11-30 01:16:44,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 01:16:44,301 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-11-30 01:16:44,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 01:16:44,303 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:16:44,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:16:44,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 01:16:44,529 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:16:44,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:16:44,530 INFO L82 PathProgramCache]: Analyzing trace with hash 709099857, now seen corresponding path program 1 times [2020-11-30 01:16:44,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:16:44,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1471892627] [2020-11-30 01:16:44,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/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 [2020-11-30 01:16:44,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:16:44,959 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:16:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:16:45,182 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:16:45,251 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 01:16:45,251 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:16:45,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 01:16:45,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:16:45 BoogieIcfgContainer [2020-11-30 01:16:45,502 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:16:45,503 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:16:45,504 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:16:45,505 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:16:45,506 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:16:42" (3/4) ... [2020-11-30 01:16:45,508 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 01:16:45,611 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_31ec1fee-ea09-49ce-852a-137b6de401e6/bin/uautomizer/witness.graphml [2020-11-30 01:16:45,612 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:16:45,615 INFO L168 Benchmark]: Toolchain (without parser) took 5094.18 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 35.8 MB in the beginning and 32.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 24.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:45,617 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 56.6 MB. Free memory was 38.3 MB in the beginning and 38.2 MB in the end (delta: 44.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:16:45,618 INFO L168 Benchmark]: CACSL2BoogieTranslator took 563.96 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 35.6 MB in the beginning and 59.1 MB in the end (delta: -23.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:45,619 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.63 ms. Allocated memory is still 75.5 MB. Free memory was 59.1 MB in the beginning and 57.2 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:16:45,619 INFO L168 Benchmark]: Boogie Preprocessor took 74.50 ms. Allocated memory is still 75.5 MB. Free memory was 57.2 MB in the beginning and 55.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:45,623 INFO L168 Benchmark]: RCFGBuilder took 1139.60 ms. Allocated memory is still 75.5 MB. Free memory was 55.3 MB in the beginning and 54.5 MB in the end (delta: 789.6 kB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:45,625 INFO L168 Benchmark]: TraceAbstraction took 3122.54 ms. Allocated memory is still 75.5 MB. Free memory was 54.2 MB in the beginning and 35.0 MB in the end (delta: 19.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:45,626 INFO L168 Benchmark]: Witness Printer took 109.11 ms. Allocated memory is still 75.5 MB. Free memory was 35.0 MB in the beginning and 32.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:45,632 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 56.6 MB. Free memory was 38.3 MB in the beginning and 38.2 MB in the end (delta: 44.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 563.96 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 35.6 MB in the beginning and 59.1 MB in the end (delta: -23.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.63 ms. Allocated memory is still 75.5 MB. Free memory was 59.1 MB in the beginning and 57.2 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.50 ms. Allocated memory is still 75.5 MB. Free memory was 57.2 MB in the beginning and 55.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1139.60 ms. Allocated memory is still 75.5 MB. Free memory was 55.3 MB in the beginning and 54.5 MB in the end (delta: 789.6 kB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3122.54 ms. Allocated memory is still 75.5 MB. Free memory was 54.2 MB in the beginning and 35.0 MB in the end (delta: 19.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. * Witness Printer took 109.11 ms. Allocated memory is still 75.5 MB. Free memory was 35.0 MB in the beginning and 32.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L88] double x = 1.0 / 0.0; [L17] __int32_t msw, exponent_less_1023; [L18] __uint32_t lsw; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (msw) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (lsw) = ew_u.parts.lsw [L25] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L26] COND FALSE !(exponent_less_1023 < 20) [L40] COND TRUE exponent_less_1023 > 51 [L41] COND TRUE exponent_less_1023 == 1024 [L42] return x + x; [L89] double res = round_double(x); [L67] __int32_t hx, lx; [L69] ieee_double_shape_type ew_u; [L70] ew_u.value = (x) [L71] EXPR ew_u.parts.msw [L71] (hx) = ew_u.parts.msw [L72] EXPR ew_u.parts.lsw [L72] (lx) = ew_u.parts.lsw [L74] hx &= 0x7fffffff [L75] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L76] hx = 0x7ff00000 - hx [L77] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L92] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1032c.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 44 SDslu, 6 SDs, 0 SdLazy, 9 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 52 ConstructedInterpolants, 5 QuantifiedInterpolants, 2276 SizeOfPredicates, 8 NumberOfNonLiveVariables, 110 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...