./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_2.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_dce5c129-1e3e-47b4-a81a-4137a853532d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_dce5c129-1e3e-47b4-a81a-4137a853532d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dce5c129-1e3e-47b4-a81a-4137a853532d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dce5c129-1e3e-47b4-a81a-4137a853532d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_dce5c129-1e3e-47b4-a81a-4137a853532d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dce5c129-1e3e-47b4-a81a-4137a853532d/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 30af8e98893bfcc9c7b0879f6e0cde9a5cbf7714 .......................................................................................................................................................................................................................... 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_dce5c129-1e3e-47b4-a81a-4137a853532d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_dce5c129-1e3e-47b4-a81a-4137a853532d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dce5c129-1e3e-47b4-a81a-4137a853532d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dce5c129-1e3e-47b4-a81a-4137a853532d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_dce5c129-1e3e-47b4-a81a-4137a853532d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dce5c129-1e3e-47b4-a81a-4137a853532d/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 30af8e98893bfcc9c7b0879f6e0cde9a5cbf7714 .............................................................................................................................................................................................................................. 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 21:55:20,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:55:20,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:55:20,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:55:20,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:55:20,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:55:20,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:55:20,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:55:20,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:55:20,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:55:20,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:55:20,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:55:20,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:55:20,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:55:20,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:55:20,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:55:20,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:55:20,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:55:20,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:55:20,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:55:20,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:55:20,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:55:20,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:55:20,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:55:20,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:55:20,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:55:20,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:55:20,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:55:20,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:55:20,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:55:20,281 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:55:20,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:55:20,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:55:20,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:55:20,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:55:20,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:55:20,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:55:20,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:55:20,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:55:20,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:55:20,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:55:20,290 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dce5c129-1e3e-47b4-a81a-4137a853532d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 21:55:20,324 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:55:20,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:55:20,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:55:20,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:55:20,327 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:55:20,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:55:20,327 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 21:55:20,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 21:55:20,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 21:55:20,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:55:20,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 21:55:20,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:55:20,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 21:55:20,329 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 21:55:20,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 21:55:20,330 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:55:20,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 21:55:20,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:55:20,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:55:20,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:55:20,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:55:20,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:55:20,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:55:20,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:55:20,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 21:55:20,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 21:55:20,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 21:55:20,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 21:55:20,333 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_dce5c129-1e3e-47b4-a81a-4137a853532d/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 -> 30af8e98893bfcc9c7b0879f6e0cde9a5cbf7714 [2019-11-15 21:55:20,391 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:55:20,410 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:55:20,415 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:55:20,417 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:55:20,417 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:55:20,419 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dce5c129-1e3e-47b4-a81a-4137a853532d/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_2.i [2019-11-15 21:55:20,493 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dce5c129-1e3e-47b4-a81a-4137a853532d/bin/uautomizer/data/6a10f2ab1/34a0c0e803b74b38884c6693adc77ace/FLAGa320bcf64 [2019-11-15 21:55:21,050 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:55:21,051 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dce5c129-1e3e-47b4-a81a-4137a853532d/sv-benchmarks/c/floats-cdfpl/square_2.i [2019-11-15 21:55:21,057 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dce5c129-1e3e-47b4-a81a-4137a853532d/bin/uautomizer/data/6a10f2ab1/34a0c0e803b74b38884c6693adc77ace/FLAGa320bcf64 [2019-11-15 21:55:21,348 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dce5c129-1e3e-47b4-a81a-4137a853532d/bin/uautomizer/data/6a10f2ab1/34a0c0e803b74b38884c6693adc77ace [2019-11-15 21:55:21,351 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:55:21,353 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 21:55:21,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:55:21,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:55:21,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:55:21,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:55:21" (1/1) ... [2019-11-15 21:55:21,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@612a35bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:55:21, skipping insertion in model container [2019-11-15 21:55:21,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:55:21" (1/1) ... [2019-11-15 21:55:21,374 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:55:21,395 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:55:21,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:55:21,644 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:55:21,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:55:21,798 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:55:21,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:55:21 WrapperNode [2019-11-15 21:55:21,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:55:21,800 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 21:55:21,800 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 21:55:21,800 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 21:55:21,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:55:21" (1/1) ... [2019-11-15 21:55:21,817 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:55:21" (1/1) ... [2019-11-15 21:55:21,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 21:55:21,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:55:21,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:55:21,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:55:21,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:55:21" (1/1) ... [2019-11-15 21:55:21,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:55:21" (1/1) ... [2019-11-15 21:55:21,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:55:21" (1/1) ... [2019-11-15 21:55:21,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:55:21" (1/1) ... [2019-11-15 21:55:21,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:55:21" (1/1) ... [2019-11-15 21:55:21,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:55:21" (1/1) ... [2019-11-15 21:55:21,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:55:21" (1/1) ... [2019-11-15 21:55:21,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:55:21,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:55:21,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:55:21,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:55:21,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:55:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5c129-1e3e-47b4-a81a-4137a853532d/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 21:55:21,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:55:21,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:55:22,134 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:55:22,134 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-15 21:55:22,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:55:22 BoogieIcfgContainer [2019-11-15 21:55:22,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:55:22,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:55:22,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:55:22,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:55:22,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:55:21" (1/3) ... [2019-11-15 21:55:22,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1270ea04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:55:22, skipping insertion in model container [2019-11-15 21:55:22,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:55:21" (2/3) ... [2019-11-15 21:55:22,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1270ea04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:55:22, skipping insertion in model container [2019-11-15 21:55:22,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:55:22" (3/3) ... [2019-11-15 21:55:22,147 INFO L109 eAbstractionObserver]: Analyzing ICFG square_2.i [2019-11-15 21:55:22,158 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:55:22,166 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 21:55:22,179 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 21:55:22,209 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:55:22,209 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 21:55:22,209 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:55:22,210 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:55:22,210 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:55:22,210 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:55:22,210 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:55:22,211 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:55:22,232 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-15 21:55:22,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-15 21:55:22,240 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:55:22,241 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-15 21:55:22,243 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:55:22,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:55:22,249 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-15 21:55:22,259 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:55:22,259 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933557644] [2019-11-15 21:55:22,260 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:55:22,260 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:55:22,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:55:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:55:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:55:22,407 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:55:22,408 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 21:55:22,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 09:55:22 BoogieIcfgContainer [2019-11-15 21:55:22,428 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 21:55:22,429 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:55:22,429 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:55:22,429 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:55:22,430 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:55:22" (3/4) ... [2019-11-15 21:55:22,435 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 21:55:22,435 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:55:22,439 INFO L168 Benchmark]: Toolchain (without parser) took 1084.10 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 948.8 MB in the beginning and 1.1 GB in the end (delta: -130.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:55:22,440 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:55:22,443 INFO L168 Benchmark]: CACSL2BoogieTranslator took 442.08 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 948.8 MB in the beginning and 1.1 GB in the end (delta: -159.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-15 21:55:22,444 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.40 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:55:22,445 INFO L168 Benchmark]: Boogie Preprocessor took 35.07 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:55:22,446 INFO L168 Benchmark]: RCFGBuilder took 260.03 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-15 21:55:22,447 INFO L168 Benchmark]: TraceAbstraction took 291.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-15 21:55:22,448 INFO L168 Benchmark]: Witness Printer took 6.48 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:55:22,459 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 442.08 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 948.8 MB in the beginning and 1.1 GB in the end (delta: -159.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.40 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.07 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 260.03 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 291.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 6.48 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * 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 < 1.398f) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, 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 21:55:25,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:55:25,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:55:25,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:55:25,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:55:25,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:55:25,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:55:25,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:55:25,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:55:25,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:55:25,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:55:25,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:55:25,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:55:25,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:55:25,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:55:25,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:55:25,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:55:25,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:55:25,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:55:25,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:55:25,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:55:25,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:55:25,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:55:25,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:55:25,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:55:25,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:55:25,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:55:25,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:55:25,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:55:25,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:55:25,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:55:25,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:55:25,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:55:25,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:55:25,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:55:25,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:55:25,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:55:25,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:55:25,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:55:25,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:55:25,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:55:25,312 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dce5c129-1e3e-47b4-a81a-4137a853532d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 21:55:25,329 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:55:25,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:55:25,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:55:25,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:55:25,331 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:55:25,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:55:25,332 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 21:55:25,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 21:55:25,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:55:25,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 21:55:25,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:55:25,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 21:55:25,333 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 21:55:25,334 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 21:55:25,334 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 21:55:25,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 21:55:25,334 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:55:25,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 21:55:25,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:55:25,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:55:25,336 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:55:25,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:55:25,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:55:25,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:55:25,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:55:25,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 21:55:25,337 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 21:55:25,338 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 21:55:25,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 21:55:25,338 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 21:55:25,338 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_dce5c129-1e3e-47b4-a81a-4137a853532d/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 -> 30af8e98893bfcc9c7b0879f6e0cde9a5cbf7714 [2019-11-15 21:55:25,375 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:55:25,389 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:55:25,393 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:55:25,395 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:55:25,396 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:55:25,397 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dce5c129-1e3e-47b4-a81a-4137a853532d/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_2.i [2019-11-15 21:55:25,465 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dce5c129-1e3e-47b4-a81a-4137a853532d/bin/uautomizer/data/73cc089dc/69cf92db93384e74bca371c687438a4c/FLAGfdde1f833 [2019-11-15 21:55:25,940 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:55:25,941 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dce5c129-1e3e-47b4-a81a-4137a853532d/sv-benchmarks/c/floats-cdfpl/square_2.i [2019-11-15 21:55:25,946 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dce5c129-1e3e-47b4-a81a-4137a853532d/bin/uautomizer/data/73cc089dc/69cf92db93384e74bca371c687438a4c/FLAGfdde1f833 [2019-11-15 21:55:26,280 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dce5c129-1e3e-47b4-a81a-4137a853532d/bin/uautomizer/data/73cc089dc/69cf92db93384e74bca371c687438a4c [2019-11-15 21:55:26,287 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:55:26,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 21:55:26,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:55:26,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:55:26,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:55:26,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:55:26" (1/1) ... [2019-11-15 21:55:26,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19b561a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:55:26, skipping insertion in model container [2019-11-15 21:55:26,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:55:26" (1/1) ... [2019-11-15 21:55:26,308 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:55:26,330 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:55:26,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:55:26,511 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:55:26,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:55:26,542 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:55:26,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:55:26 WrapperNode [2019-11-15 21:55:26,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:55:26,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 21:55:26,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 21:55:26,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 21:55:26,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:55:26" (1/1) ... [2019-11-15 21:55:26,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:55:26" (1/1) ... [2019-11-15 21:55:26,667 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 21:55:26,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:55:26,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:55:26,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:55:26,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:55:26" (1/1) ... [2019-11-15 21:55:26,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:55:26" (1/1) ... [2019-11-15 21:55:26,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:55:26" (1/1) ... [2019-11-15 21:55:26,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:55:26" (1/1) ... [2019-11-15 21:55:26,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:55:26" (1/1) ... [2019-11-15 21:55:26,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:55:26" (1/1) ... [2019-11-15 21:55:26,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:55:26" (1/1) ... [2019-11-15 21:55:26,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:55:26,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:55:26,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:55:26,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:55:26,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:55:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5c129-1e3e-47b4-a81a-4137a853532d/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 21:55:26,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:55:26,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:55:29,061 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:55:29,062 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-15 21:55:29,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:55:29 BoogieIcfgContainer [2019-11-15 21:55:29,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:55:29,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:55:29,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:55:29,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:55:29,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:55:26" (1/3) ... [2019-11-15 21:55:29,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d57504b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:55:29, skipping insertion in model container [2019-11-15 21:55:29,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:55:26" (2/3) ... [2019-11-15 21:55:29,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d57504b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:55:29, skipping insertion in model container [2019-11-15 21:55:29,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:55:29" (3/3) ... [2019-11-15 21:55:29,075 INFO L109 eAbstractionObserver]: Analyzing ICFG square_2.i [2019-11-15 21:55:29,086 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:55:29,094 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 21:55:29,104 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 21:55:29,127 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:55:29,127 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 21:55:29,127 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:55:29,128 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:55:29,128 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:55:29,128 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:55:29,129 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:55:29,129 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:55:29,147 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-15 21:55:29,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-15 21:55:29,160 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:55:29,161 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-15 21:55:29,162 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:55:29,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:55:29,167 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-15 21:55:29,176 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:55:29,177 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547783783] [2019-11-15 21:55:29,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5c129-1e3e-47b4-a81a-4137a853532d/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 21:56:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:56:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:56:54,552 INFO L168 tionRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-15 21:56:54,553 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 21:56:54,754 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-15 21:56:54,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 09:56:54 BoogieIcfgContainer [2019-11-15 21:56:54,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 21:56:54,774 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:56:54,774 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:56:54,774 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:56:54,775 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:55:29" (3/4) ... [2019-11-15 21:56:54,779 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 21:56:54,835 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_dce5c129-1e3e-47b4-a81a-4137a853532d/bin/uautomizer/witness.graphml [2019-11-15 21:56:54,835 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:56:54,838 INFO L168 Benchmark]: Toolchain (without parser) took 88548.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -139.7 MB). Peak memory consumption was 1.9 MB. Max. memory is 11.5 GB. [2019-11-15 21:56:54,839 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:56:54,842 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.13 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 940.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-15 21:56:54,849 INFO L168 Benchmark]: Boogie Procedure Inliner took 123.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -197.0 MB). Peak memory consumption was 12.3 MB. Max. memory is 11.5 GB. [2019-11-15 21:56:54,850 INFO L168 Benchmark]: Boogie Preprocessor took 33.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-15 21:56:54,852 INFO L168 Benchmark]: RCFGBuilder took 2362.49 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: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2019-11-15 21:56:54,853 INFO L168 Benchmark]: TraceAbstraction took 85707.85 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: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2019-11-15 21:56:54,853 INFO L168 Benchmark]: Witness Printer took 61.92 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 21:56:54,862 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 253.13 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 940.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 123.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -197.0 MB). Peak memory consumption was 12.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2362.49 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: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 85707.85 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: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * Witness Printer took 61.92 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 < 1.398f) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Result: UNSAFE, OverallTime: 85.6s, 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, 68.7s 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...