./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_56927be7-f12a-4f21-af60-b9b3500bbff6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_56927be7-f12a-4f21-af60-b9b3500bbff6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_56927be7-f12a-4f21-af60-b9b3500bbff6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_56927be7-f12a-4f21-af60-b9b3500bbff6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_3.i -s /tmp/vcloud-vcloud-master/worker/run_dir_56927be7-f12a-4f21-af60-b9b3500bbff6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_56927be7-f12a-4f21-af60-b9b3500bbff6/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 57828c11c74ba018eaf70a217208a01187285749 .......................................................................................................................................................................................................................... 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_56927be7-f12a-4f21-af60-b9b3500bbff6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_56927be7-f12a-4f21-af60-b9b3500bbff6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_56927be7-f12a-4f21-af60-b9b3500bbff6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_56927be7-f12a-4f21-af60-b9b3500bbff6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_3.i -s /tmp/vcloud-vcloud-master/worker/run_dir_56927be7-f12a-4f21-af60-b9b3500bbff6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_56927be7-f12a-4f21-af60-b9b3500bbff6/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 57828c11c74ba018eaf70a217208a01187285749 .............................................................................................................................................................................................................................. 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 0.1.24-cad4683 [2019-11-15 23:35:43,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:35:43,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:35:43,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:35:43,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:35:43,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:35:43,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:35:43,319 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:35:43,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:35:43,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:35:43,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:35:43,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:35:43,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:35:43,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:35:43,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:35:43,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:35:43,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:35:43,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:35:43,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:35:43,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:35:43,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:35:43,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:35:43,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:35:43,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:35:43,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:35:43,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:35:43,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:35:43,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:35:43,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:35:43,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:35:43,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:35:43,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:35:43,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:35:43,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:35:43,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:35:43,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:35:43,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:35:43,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:35:43,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:35:43,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:35:43,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:35:43,358 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_56927be7-f12a-4f21-af60-b9b3500bbff6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 23:35:43,371 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:35:43,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:35:43,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:35:43,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:35:43,373 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:35:43,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:35:43,374 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:35:43,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:35:43,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:35:43,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:35:43,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:35:43,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:35:43,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:35:43,375 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:35:43,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:35:43,375 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:35:43,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:35:43,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:35:43,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:35:43,376 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:35:43,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:35:43,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:35:43,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:35:43,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:35:43,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:35:43,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:35:43,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:35:43,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:35:43,380 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_56927be7-f12a-4f21-af60-b9b3500bbff6/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 -> 57828c11c74ba018eaf70a217208a01187285749 [2019-11-15 23:35:43,435 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:35:43,445 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:35:43,450 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:35:43,451 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:35:43,453 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:35:43,453 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_56927be7-f12a-4f21-af60-b9b3500bbff6/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_3.i [2019-11-15 23:35:43,504 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_56927be7-f12a-4f21-af60-b9b3500bbff6/bin/uautomizer/data/60e0c2cc0/efc7146dad59445ebc31ea2dd9e1d362/FLAGeaa06d3eb [2019-11-15 23:35:43,894 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:35:43,895 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_56927be7-f12a-4f21-af60-b9b3500bbff6/sv-benchmarks/c/floats-cdfpl/square_3.i [2019-11-15 23:35:43,900 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_56927be7-f12a-4f21-af60-b9b3500bbff6/bin/uautomizer/data/60e0c2cc0/efc7146dad59445ebc31ea2dd9e1d362/FLAGeaa06d3eb [2019-11-15 23:35:43,915 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_56927be7-f12a-4f21-af60-b9b3500bbff6/bin/uautomizer/data/60e0c2cc0/efc7146dad59445ebc31ea2dd9e1d362 [2019-11-15 23:35:43,918 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:35:43,919 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:35:43,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:35:43,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:35:43,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:35:43,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:35:43" (1/1) ... [2019-11-15 23:35:43,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4146e191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:35:43, skipping insertion in model container [2019-11-15 23:35:43,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:35:43" (1/1) ... [2019-11-15 23:35:43,937 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:35:43,954 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:35:44,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:35:44,174 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:35:44,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:35:44,207 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:35:44,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:35:44 WrapperNode [2019-11-15 23:35:44,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:35:44,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:35:44,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:35:44,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:35:44,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:35:44" (1/1) ... [2019-11-15 23:35:44,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:35:44" (1/1) ... [2019-11-15 23:35:44,232 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:35:44,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:35:44,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:35:44,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:35:44,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:35:44" (1/1) ... [2019-11-15 23:35:44,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:35:44" (1/1) ... [2019-11-15 23:35:44,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:35:44" (1/1) ... [2019-11-15 23:35:44,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:35:44" (1/1) ... [2019-11-15 23:35:44,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:35:44" (1/1) ... [2019-11-15 23:35:44,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:35:44" (1/1) ... [2019-11-15 23:35:44,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:35:44" (1/1) ... [2019-11-15 23:35:44,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:35:44,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:35:44,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:35:44,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:35:44,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:35:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56927be7-f12a-4f21-af60-b9b3500bbff6/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 [2019-11-15 23:35:44,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:35:44,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:35:44,417 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:35:44,417 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-15 23:35:44,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:35:44 BoogieIcfgContainer [2019-11-15 23:35:44,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:35:44,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:35:44,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:35:44,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:35:44,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:35:43" (1/3) ... [2019-11-15 23:35:44,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59ec04d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:35:44, skipping insertion in model container [2019-11-15 23:35:44,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:35:44" (2/3) ... [2019-11-15 23:35:44,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59ec04d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:35:44, skipping insertion in model container [2019-11-15 23:35:44,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:35:44" (3/3) ... [2019-11-15 23:35:44,426 INFO L109 eAbstractionObserver]: Analyzing ICFG square_3.i [2019-11-15 23:35:44,435 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:35:44,441 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:35:44,452 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:35:44,479 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:35:44,480 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:35:44,480 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:35:44,481 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:35:44,481 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:35:44,481 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:35:44,482 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:35:44,483 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:35:44,494 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-15 23:35:44,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-15 23:35:44,501 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:35:44,501 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-15 23:35:44,503 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:35:44,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:35:44,507 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-15 23:35:44,513 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:35:44,513 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054614014] [2019-11-15 23:35:44,513 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:35:44,514 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:35:44,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:35:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:35:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:35:44,596 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:35:44,596 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 23:35:44,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:35:44 BoogieIcfgContainer [2019-11-15 23:35:44,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:35:44,612 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:35:44,612 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:35:44,612 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:35:44,613 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:35:44" (3/4) ... [2019-11-15 23:35:44,616 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 23:35:44,616 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:35:44,619 INFO L168 Benchmark]: Toolchain (without parser) took 698.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -166.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:35:44,619 INFO L168 Benchmark]: CDTParser took 1.00 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:35:44,620 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -197.9 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:35:44,621 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.23 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. [2019-11-15 23:35:44,621 INFO L168 Benchmark]: Boogie Preprocessor took 12.34 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. [2019-11-15 23:35:44,622 INFO L168 Benchmark]: RCFGBuilder took 173.82 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: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. [2019-11-15 23:35:44,622 INFO L168 Benchmark]: TraceAbstraction took 191.79 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: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. [2019-11-15 23:35:44,623 INFO L168 Benchmark]: Witness Printer took 4.52 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. [2019-11-15 23:35:44,626 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.00 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 284.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -197.9 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.23 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.34 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 173.82 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: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 191.79 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: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. * Witness Printer took 4.52 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryArithmeticFLOAToperation at line 12. Possible FailurePath: [L6] float IN = __VERIFIER_nondet_float(); [L9] float x = IN; [L11-L12] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L14] COND TRUE !(result >= 0.0f && result < 1.39843f) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 0.1.24-cad4683 [2019-11-15 23:35:46,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:35:46,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:35:46,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:35:46,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:35:46,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:35:46,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:35:46,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:35:46,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:35:46,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:35:46,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:35:46,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:35:46,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:35:46,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:35:46,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:35:46,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:35:46,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:35:46,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:35:46,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:35:46,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:35:46,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:35:46,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:35:46,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:35:46,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:35:46,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:35:46,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:35:46,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:35:46,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:35:46,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:35:46,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:35:46,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:35:46,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:35:46,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:35:46,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:35:46,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:35:46,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:35:46,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:35:46,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:35:46,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:35:46,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:35:46,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:35:46,789 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_56927be7-f12a-4f21-af60-b9b3500bbff6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 23:35:46,801 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:35:46,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:35:46,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:35:46,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:35:46,802 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:35:46,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:35:46,803 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:35:46,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:35:46,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:35:46,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:35:46,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:35:46,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:35:46,804 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 23:35:46,804 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 23:35:46,804 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:35:46,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:35:46,805 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:35:46,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:35:46,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:35:46,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:35:46,805 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:35:46,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:35:46,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:35:46,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:35:46,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:35:46,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:35:46,807 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 23:35:46,807 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 23:35:46,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:35:46,807 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 23:35:46,807 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_56927be7-f12a-4f21-af60-b9b3500bbff6/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 -> 57828c11c74ba018eaf70a217208a01187285749 [2019-11-15 23:35:46,845 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:35:46,856 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:35:46,860 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:35:46,863 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:35:46,864 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:35:46,864 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_56927be7-f12a-4f21-af60-b9b3500bbff6/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_3.i [2019-11-15 23:35:46,918 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_56927be7-f12a-4f21-af60-b9b3500bbff6/bin/uautomizer/data/92247dc5d/8cff4d2ad86e4fc0bbcd802a4977177b/FLAG7dd3e47c5 [2019-11-15 23:35:47,317 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:35:47,318 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_56927be7-f12a-4f21-af60-b9b3500bbff6/sv-benchmarks/c/floats-cdfpl/square_3.i [2019-11-15 23:35:47,323 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_56927be7-f12a-4f21-af60-b9b3500bbff6/bin/uautomizer/data/92247dc5d/8cff4d2ad86e4fc0bbcd802a4977177b/FLAG7dd3e47c5 [2019-11-15 23:35:47,338 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_56927be7-f12a-4f21-af60-b9b3500bbff6/bin/uautomizer/data/92247dc5d/8cff4d2ad86e4fc0bbcd802a4977177b [2019-11-15 23:35:47,343 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:35:47,344 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:35:47,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:35:47,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:35:47,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:35:47,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:35:47" (1/1) ... [2019-11-15 23:35:47,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f63f237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:35:47, skipping insertion in model container [2019-11-15 23:35:47,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:35:47" (1/1) ... [2019-11-15 23:35:47,363 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:35:47,379 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:35:47,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:35:47,567 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:35:47,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:35:47,593 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:35:47,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:35:47 WrapperNode [2019-11-15 23:35:47,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:35:47,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:35:47,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:35:47,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:35:47,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:35:47" (1/1) ... [2019-11-15 23:35:47,608 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:35:47" (1/1) ... [2019-11-15 23:35:47,676 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:35:47,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:35:47,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:35:47,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:35:47,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:35:47" (1/1) ... [2019-11-15 23:35:47,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:35:47" (1/1) ... [2019-11-15 23:35:47,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:35:47" (1/1) ... [2019-11-15 23:35:47,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:35:47" (1/1) ... [2019-11-15 23:35:47,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:35:47" (1/1) ... [2019-11-15 23:35:47,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:35:47" (1/1) ... [2019-11-15 23:35:47,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:35:47" (1/1) ... [2019-11-15 23:35:47,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:35:47,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:35:47,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:35:47,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:35:47,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:35:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56927be7-f12a-4f21-af60-b9b3500bbff6/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 [2019-11-15 23:35:47,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:35:47,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:35:49,968 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:35:49,968 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-15 23:35:49,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:35:49 BoogieIcfgContainer [2019-11-15 23:35:49,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:35:49,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:35:49,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:35:49,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:35:49,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:35:47" (1/3) ... [2019-11-15 23:35:49,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c5111f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:35:49, skipping insertion in model container [2019-11-15 23:35:49,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:35:47" (2/3) ... [2019-11-15 23:35:49,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c5111f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:35:49, skipping insertion in model container [2019-11-15 23:35:49,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:35:49" (3/3) ... [2019-11-15 23:35:49,977 INFO L109 eAbstractionObserver]: Analyzing ICFG square_3.i [2019-11-15 23:35:49,986 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:35:49,993 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:35:50,003 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:35:50,025 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:35:50,025 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:35:50,025 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:35:50,026 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:35:50,026 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:35:50,026 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:35:50,026 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:35:50,027 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:35:50,038 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-15 23:35:50,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-15 23:35:50,043 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:35:50,044 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-15 23:35:50,045 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:35:50,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:35:50,049 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-15 23:35:50,056 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:35:50,056 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [387318781] [2019-11-15 23:35:50,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56927be7-f12a-4f21-af60-b9b3500bbff6/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 [2019-11-15 23:37:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:32,926 INFO L168 tionRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-15 23:40:32,927 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 23:40:33,128 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-15 23:40:33,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:40:33 BoogieIcfgContainer [2019-11-15 23:40:33,144 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:40:33,145 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:40:33,145 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:40:33,145 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:40:33,146 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:35:49" (3/4) ... [2019-11-15 23:40:33,148 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 23:40:33,183 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_56927be7-f12a-4f21-af60-b9b3500bbff6/bin/uautomizer/witness.graphml [2019-11-15 23:40:33,184 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:40:33,186 INFO L168 Benchmark]: Toolchain (without parser) took 285840.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -163.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:40:33,186 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:40:33,187 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.96 ms. Allocated memory is still 1.0 GB. Free memory was 945.6 MB in the beginning and 934.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:40:33,188 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 934.9 MB in the beginning and 1.2 GB in the end (delta: -220.2 MB). Peak memory consumption was 12.3 MB. Max. memory is 11.5 GB. [2019-11-15 23:40:33,188 INFO L168 Benchmark]: Boogie Preprocessor took 17.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 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. [2019-11-15 23:40:33,189 INFO L168 Benchmark]: RCFGBuilder took 2275.23 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2019-11-15 23:40:33,190 INFO L168 Benchmark]: TraceAbstraction took 283173.57 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: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. [2019-11-15 23:40:33,190 INFO L168 Benchmark]: Witness Printer took 39.15 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. [2019-11-15 23:40:33,194 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 244.96 ms. Allocated memory is still 1.0 GB. Free memory was 945.6 MB in the beginning and 934.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 81.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 934.9 MB in the beginning and 1.2 GB in the end (delta: -220.2 MB). Peak memory consumption was 12.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 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. * RCFGBuilder took 2275.23 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 283173.57 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: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. * Witness Printer took 39.15 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L6] float IN = __VERIFIER_nondet_float(); [L9] float x = IN; [L11-L12] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L14] COND TRUE !(result >= 0.0f && result < 1.39843f) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Result: UNSAFE, OverallTime: 283.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 92.8s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...