./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_3.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/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_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_3.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/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 0.1.24-678e011 [2019-11-20 11:34:05,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 11:34:05,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 11:34:05,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 11:34:05,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 11:34:05,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 11:34:05,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 11:34:05,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 11:34:05,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 11:34:05,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 11:34:05,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 11:34:05,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 11:34:05,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 11:34:05,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 11:34:05,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 11:34:05,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 11:34:05,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 11:34:05,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 11:34:05,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 11:34:05,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 11:34:05,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 11:34:05,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 11:34:05,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 11:34:05,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 11:34:05,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 11:34:05,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 11:34:05,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 11:34:05,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 11:34:05,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 11:34:05,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 11:34:05,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 11:34:05,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 11:34:05,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 11:34:05,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 11:34:05,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 11:34:05,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 11:34:05,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 11:34:05,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 11:34:05,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 11:34:05,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 11:34:05,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 11:34:05,252 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 11:34:05,277 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 11:34:05,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 11:34:05,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 11:34:05,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 11:34:05,284 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 11:34:05,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 11:34:05,285 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 11:34:05,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 11:34:05,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 11:34:05,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 11:34:05,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 11:34:05,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 11:34:05,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 11:34:05,291 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 11:34:05,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 11:34:05,292 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 11:34:05,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 11:34:05,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 11:34:05,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 11:34:05,292 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 11:34:05,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 11:34:05,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 11:34:05,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 11:34:05,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 11:34:05,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 11:34:05,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 11:34:05,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 11:34:05,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 11:34:05,294 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_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/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 [2019-11-20 11:34:05,434 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 11:34:05,444 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 11:34:05,448 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 11:34:05,449 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 11:34:05,449 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 11:34:05,450 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_3.i [2019-11-20 11:34:05,498 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/bin/uautomizer/data/46d4eafff/1fc82e53bff541fe87d2ab0ca5ad15b3/FLAG0ffe5c84d [2019-11-20 11:34:05,900 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 11:34:05,900 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/sv-benchmarks/c/floats-cdfpl/square_3.i [2019-11-20 11:34:05,907 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/bin/uautomizer/data/46d4eafff/1fc82e53bff541fe87d2ab0ca5ad15b3/FLAG0ffe5c84d [2019-11-20 11:34:05,922 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/bin/uautomizer/data/46d4eafff/1fc82e53bff541fe87d2ab0ca5ad15b3 [2019-11-20 11:34:05,924 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 11:34:05,926 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 11:34:05,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 11:34:05,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 11:34:05,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 11:34:05,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:34:05" (1/1) ... [2019-11-20 11:34:05,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68c9a5f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:05, skipping insertion in model container [2019-11-20 11:34:05,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:34:05" (1/1) ... [2019-11-20 11:34:05,940 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 11:34:05,956 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 11:34:06,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:34:06,107 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 11:34:06,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:34:06,193 INFO L192 MainTranslator]: Completed translation [2019-11-20 11:34:06,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:06 WrapperNode [2019-11-20 11:34:06,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 11:34:06,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 11:34:06,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 11:34:06,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 11:34:06,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:06" (1/1) ... [2019-11-20 11:34:06,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:06" (1/1) ... [2019-11-20 11:34:06,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 11:34:06,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 11:34:06,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 11:34:06,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 11:34:06,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:06" (1/1) ... [2019-11-20 11:34:06,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:06" (1/1) ... [2019-11-20 11:34:06,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:06" (1/1) ... [2019-11-20 11:34:06,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:06" (1/1) ... [2019-11-20 11:34:06,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:06" (1/1) ... [2019-11-20 11:34:06,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:06" (1/1) ... [2019-11-20 11:34:06,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:06" (1/1) ... [2019-11-20 11:34:06,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 11:34:06,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 11:34:06,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 11:34:06,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 11:34:06,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/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 [2019-11-20 11:34:06,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 11:34:06,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 11:34:06,447 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 11:34:06,448 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-20 11:34:06,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:34:06 BoogieIcfgContainer [2019-11-20 11:34:06,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 11:34:06,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 11:34:06,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 11:34:06,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 11:34:06,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:34:05" (1/3) ... [2019-11-20 11:34:06,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10596b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:34:06, skipping insertion in model container [2019-11-20 11:34:06,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:06" (2/3) ... [2019-11-20 11:34:06,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10596b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:34:06, skipping insertion in model container [2019-11-20 11:34:06,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:34:06" (3/3) ... [2019-11-20 11:34:06,462 INFO L109 eAbstractionObserver]: Analyzing ICFG square_3.i [2019-11-20 11:34:06,472 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 11:34:06,478 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 11:34:06,490 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 11:34:06,519 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 11:34:06,519 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 11:34:06,520 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 11:34:06,520 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 11:34:06,520 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 11:34:06,520 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 11:34:06,521 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 11:34:06,522 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 11:34:06,542 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-20 11:34:06,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-20 11:34:06,549 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:34:06,550 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-20 11:34:06,550 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:34:06,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:34:06,556 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-20 11:34:06,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:34:06,567 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283584985] [2019-11-20 11:34:06,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:34:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:34:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:34:06,667 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 11:34:06,667 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 11:34:06,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:34:06 BoogieIcfgContainer [2019-11-20 11:34:06,679 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 11:34:06,680 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 11:34:06,680 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 11:34:06,680 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 11:34:06,681 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:34:06" (3/4) ... [2019-11-20 11:34:06,684 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 11:34:06,684 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 11:34:06,687 INFO L168 Benchmark]: Toolchain (without parser) took 760.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -161.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:34:06,687 INFO L168 Benchmark]: CDTParser took 0.23 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. [2019-11-20 11:34:06,688 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -195.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-20 11:34:06,689 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:34:06,691 INFO L168 Benchmark]: Boogie Preprocessor took 17.01 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. [2019-11-20 11:34:06,693 INFO L168 Benchmark]: RCFGBuilder took 206.85 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-20 11:34:06,694 INFO L168 Benchmark]: TraceAbstraction took 229.50 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: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2019-11-20 11:34:06,695 INFO L168 Benchmark]: Witness Printer took 4.50 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. [2019-11-20 11:34:06,702 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 267.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -195.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.01 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 206.85 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 229.50 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: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.50 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 0.1.24-678e011 [2019-11-20 11:34:08,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 11:34:08,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 11:34:08,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 11:34:08,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 11:34:08,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 11:34:08,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 11:34:08,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 11:34:08,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 11:34:08,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 11:34:08,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 11:34:08,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 11:34:08,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 11:34:08,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 11:34:08,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 11:34:08,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 11:34:08,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 11:34:08,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 11:34:08,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 11:34:08,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 11:34:08,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 11:34:08,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 11:34:08,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 11:34:08,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 11:34:08,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 11:34:08,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 11:34:08,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 11:34:08,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 11:34:08,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 11:34:08,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 11:34:08,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 11:34:08,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 11:34:08,682 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 11:34:08,683 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 11:34:08,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 11:34:08,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 11:34:08,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 11:34:08,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 11:34:08,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 11:34:08,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 11:34:08,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 11:34:08,688 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-20 11:34:08,715 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 11:34:08,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 11:34:08,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 11:34:08,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 11:34:08,717 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 11:34:08,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 11:34:08,717 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 11:34:08,718 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 11:34:08,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 11:34:08,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 11:34:08,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 11:34:08,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 11:34:08,719 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 11:34:08,719 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 11:34:08,719 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 11:34:08,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 11:34:08,719 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 11:34:08,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 11:34:08,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 11:34:08,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 11:34:08,720 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 11:34:08,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 11:34:08,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 11:34:08,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 11:34:08,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 11:34:08,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 11:34:08,722 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 11:34:08,722 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 11:34:08,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 11:34:08,722 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 11:34:08,723 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_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/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 [2019-11-20 11:34:08,980 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 11:34:08,990 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 11:34:08,993 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 11:34:08,995 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 11:34:08,995 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 11:34:08,996 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_3.i [2019-11-20 11:34:09,056 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/bin/uautomizer/data/48cea37f9/5b53ee546cb54b5492ddbb4f7cbff729/FLAGacd8c2cd5 [2019-11-20 11:34:09,440 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 11:34:09,441 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/sv-benchmarks/c/floats-cdfpl/square_3.i [2019-11-20 11:34:09,446 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/bin/uautomizer/data/48cea37f9/5b53ee546cb54b5492ddbb4f7cbff729/FLAGacd8c2cd5 [2019-11-20 11:34:09,911 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/bin/uautomizer/data/48cea37f9/5b53ee546cb54b5492ddbb4f7cbff729 [2019-11-20 11:34:09,913 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 11:34:09,914 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 11:34:09,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 11:34:09,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 11:34:09,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 11:34:09,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:34:09" (1/1) ... [2019-11-20 11:34:09,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dd7fc92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:09, skipping insertion in model container [2019-11-20 11:34:09,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:34:09" (1/1) ... [2019-11-20 11:34:09,931 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 11:34:09,948 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 11:34:10,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:34:10,098 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 11:34:10,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:34:10,128 INFO L192 MainTranslator]: Completed translation [2019-11-20 11:34:10,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:10 WrapperNode [2019-11-20 11:34:10,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 11:34:10,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 11:34:10,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 11:34:10,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 11:34:10,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:10" (1/1) ... [2019-11-20 11:34:10,144 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:10" (1/1) ... [2019-11-20 11:34:10,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 11:34:10,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 11:34:10,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 11:34:10,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 11:34:10,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:10" (1/1) ... [2019-11-20 11:34:10,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:10" (1/1) ... [2019-11-20 11:34:10,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:10" (1/1) ... [2019-11-20 11:34:10,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:10" (1/1) ... [2019-11-20 11:34:10,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:10" (1/1) ... [2019-11-20 11:34:10,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:10" (1/1) ... [2019-11-20 11:34:10,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:10" (1/1) ... [2019-11-20 11:34:10,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 11:34:10,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 11:34:10,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 11:34:10,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 11:34:10,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/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 [2019-11-20 11:34:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 11:34:10,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 11:34:12,496 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 11:34:12,496 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-20 11:34:12,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:34:12 BoogieIcfgContainer [2019-11-20 11:34:12,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 11:34:12,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 11:34:12,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 11:34:12,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 11:34:12,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:34:09" (1/3) ... [2019-11-20 11:34:12,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@338b6246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:34:12, skipping insertion in model container [2019-11-20 11:34:12,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:10" (2/3) ... [2019-11-20 11:34:12,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@338b6246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:34:12, skipping insertion in model container [2019-11-20 11:34:12,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:34:12" (3/3) ... [2019-11-20 11:34:12,504 INFO L109 eAbstractionObserver]: Analyzing ICFG square_3.i [2019-11-20 11:34:12,512 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 11:34:12,517 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 11:34:12,524 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 11:34:12,541 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 11:34:12,541 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 11:34:12,541 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 11:34:12,541 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 11:34:12,542 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 11:34:12,542 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 11:34:12,542 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 11:34:12,542 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 11:34:12,555 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-20 11:34:12,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-20 11:34:12,560 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:34:12,561 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-20 11:34:12,561 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:34:12,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:34:12,566 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-20 11:34:12,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:34:12,573 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525562807] [2019-11-20 11:34:12,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/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 [2019-11-20 11:35:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:38:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:38:38,563 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-20 11:38:38,564 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 11:38:38,765 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-20 11:38:38,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:38:38 BoogieIcfgContainer [2019-11-20 11:38:38,780 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 11:38:38,780 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 11:38:38,781 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 11:38:38,781 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 11:38:38,781 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:34:12" (3/4) ... [2019-11-20 11:38:38,783 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 11:38:38,821 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ba2639f1-e69b-4a50-8618-7bb36eacc3a4/bin/uautomizer/witness.graphml [2019-11-20 11:38:38,821 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 11:38:38,823 INFO L168 Benchmark]: Toolchain (without parser) took 268908.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -137.2 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2019-11-20 11:38:38,824 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:38:38,825 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.63 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 948.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-20 11:38:38,825 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.24 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:38:38,826 INFO L168 Benchmark]: Boogie Preprocessor took 74.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 948.4 MB in the beginning and 1.1 GB in the end (delta: -186.8 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2019-11-20 11:38:38,827 INFO L168 Benchmark]: RCFGBuilder took 2262.47 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: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. [2019-11-20 11:38:38,828 INFO L168 Benchmark]: TraceAbstraction took 266281.90 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2019-11-20 11:38:38,828 INFO L168 Benchmark]: Witness Printer took 40.77 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. [2019-11-20 11:38:38,831 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 211.63 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 948.4 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 31.24 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 74.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 948.4 MB in the beginning and 1.1 GB in the end (delta: -186.8 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2262.47 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: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 266281.90 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * Witness Printer took 40.77 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: 266.2s, 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, 91.9s 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...