./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9b4984d971b5a5a3b565edf502e7d7464558f166 ................................................................................................................................................................................................................................. 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_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9b4984d971b5a5a3b565edf502e7d7464558f166 ................................................................................................................................................................................................................................... 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 0.1.24-6b5699a [2019-11-26 02:40:48,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:40:48,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:40:48,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:40:48,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:40:48,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:40:48,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:40:48,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:40:48,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:40:48,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:40:48,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:40:48,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:40:48,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:40:48,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:40:48,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:40:48,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:40:48,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:40:48,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:40:48,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:40:48,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:40:48,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:40:48,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:40:48,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:40:48,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:40:48,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:40:48,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:40:48,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:40:48,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:40:48,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:40:48,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:40:48,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:40:48,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:40:48,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:40:48,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:40:48,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:40:48,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:40:48,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:40:48,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:40:48,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:40:48,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:40:48,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:40:48,285 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:40:48,304 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:40:48,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:40:48,306 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:40:48,306 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:40:48,306 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:40:48,306 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:40:48,306 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:40:48,307 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:40:48,307 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:40:48,307 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:40:48,308 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:40:48,308 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:40:48,309 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:40:48,309 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:40:48,309 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:40:48,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:40:48,310 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:40:48,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:40:48,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:40:48,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:40:48,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:40:48,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:40:48,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:40:48,311 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:40:48,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:40:48,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:40:48,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:40:48,312 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:40:48,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:40:48,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:40:48,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:40:48,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:40:48,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:40:48,314 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:40:48,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:40:48,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:40:48,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:40:48,315 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan 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 -> Taipan 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 -> 9b4984d971b5a5a3b565edf502e7d7464558f166 [2019-11-26 02:40:48,483 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:40:48,494 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:40:48,497 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:40:48,498 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:40:48,499 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:40:48,499 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan/../../sv-benchmarks/c/floats-cdfpl/square_1.i [2019-11-26 02:40:48,548 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan/data/574aa05e7/b5720ca76325448aafe24d3323f643c1/FLAG2080a9503 [2019-11-26 02:40:48,907 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:40:48,907 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_08f5b44a-87aa-41f4-bf69-76621f988e58/sv-benchmarks/c/floats-cdfpl/square_1.i [2019-11-26 02:40:48,912 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan/data/574aa05e7/b5720ca76325448aafe24d3323f643c1/FLAG2080a9503 [2019-11-26 02:40:49,362 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan/data/574aa05e7/b5720ca76325448aafe24d3323f643c1 [2019-11-26 02:40:49,365 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:40:49,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:40:49,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:40:49,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:40:49,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:40:49,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:40:49" (1/1) ... [2019-11-26 02:40:49,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7442682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:49, skipping insertion in model container [2019-11-26 02:40:49,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:40:49" (1/1) ... [2019-11-26 02:40:49,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:40:49,397 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:40:49,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:40:49,564 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:40:49,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:40:49,651 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:40:49,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:49 WrapperNode [2019-11-26 02:40:49,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:40:49,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:40:49,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:40:49,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:40:49,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:49" (1/1) ... [2019-11-26 02:40:49,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:49" (1/1) ... [2019-11-26 02:40:49,676 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:40:49,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:40:49,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:40:49,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:40:49,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:49" (1/1) ... [2019-11-26 02:40:49,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:49" (1/1) ... [2019-11-26 02:40:49,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:49" (1/1) ... [2019-11-26 02:40:49,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:49" (1/1) ... [2019-11-26 02:40:49,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:49" (1/1) ... [2019-11-26 02:40:49,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:49" (1/1) ... [2019-11-26 02:40:49,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:49" (1/1) ... [2019-11-26 02:40:49,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:40:49,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:40:49,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:40:49,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:40:49,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan/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 [2019-11-26 02:40:49,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:40:49,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:40:49,887 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:40:49,887 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-26 02:40:49,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:40:49 BoogieIcfgContainer [2019-11-26 02:40:49,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:40:49,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:40:49,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:40:49,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:40:49,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:40:49" (1/3) ... [2019-11-26 02:40:49,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@165ab8d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:40:49, skipping insertion in model container [2019-11-26 02:40:49,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:49" (2/3) ... [2019-11-26 02:40:49,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@165ab8d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:40:49, skipping insertion in model container [2019-11-26 02:40:49,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:40:49" (3/3) ... [2019-11-26 02:40:49,896 INFO L109 eAbstractionObserver]: Analyzing ICFG square_1.i [2019-11-26 02:40:49,904 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:40:49,910 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:40:49,921 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:40:49,946 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:40:49,946 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:40:49,946 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:40:49,946 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:40:49,947 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:40:49,947 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:40:49,947 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:40:49,947 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:40:49,961 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-11-26 02:40:49,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-26 02:40:49,965 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:40:49,966 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-26 02:40:49,966 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:40:49,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:40:49,970 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-26 02:40:49,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:40:49,977 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959209092] [2019-11-26 02:40:49,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:40:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:40:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:40:50,077 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:40:50,078 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:40:50,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:40:50 BoogieIcfgContainer [2019-11-26 02:40:50,092 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:40:50,092 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:40:50,092 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:40:50,093 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:40:50,093 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:40:49" (3/4) ... [2019-11-26 02:40:50,097 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-26 02:40:50,097 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:40:50,099 INFO L168 Benchmark]: Toolchain (without parser) took 732.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 948.9 MB in the beginning and 1.1 GB in the end (delta: -141.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:40:50,100 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 965.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:40:50,101 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 948.9 MB in the beginning and 1.1 GB in the end (delta: -171.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:40:50,101 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.73 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. [2019-11-26 02:40:50,102 INFO L168 Benchmark]: Boogie Preprocessor took 13.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:40:50,102 INFO L168 Benchmark]: RCFGBuilder took 198.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:40:50,103 INFO L168 Benchmark]: TraceAbstraction took 203.12 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:40:50,104 INFO L168 Benchmark]: Witness Printer took 4.68 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. [2019-11-26 02:40:50,107 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 965.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 282.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 948.9 MB in the beginning and 1.1 GB in the end (delta: -171.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 23.73 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 13.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 198.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 203.12 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.68 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 < 1.39f) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 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=6occurred 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 0.1.24-6b5699a [2019-11-26 02:40:52,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:40:52,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:40:52,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:40:52,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:40:52,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:40:52,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:40:52,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:40:52,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:40:52,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:40:52,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:40:52,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:40:52,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:40:52,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:40:52,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:40:52,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:40:52,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:40:52,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:40:52,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:40:52,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:40:52,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:40:52,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:40:52,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:40:52,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:40:52,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:40:52,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:40:52,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:40:52,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:40:52,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:40:52,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:40:52,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:40:52,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:40:52,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:40:52,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:40:52,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:40:52,111 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:40:52,112 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:40:52,112 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:40:52,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:40:52,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:40:52,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:40:52,116 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:40:52,130 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:40:52,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:40:52,131 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:40:52,132 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:40:52,132 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:40:52,132 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:40:52,132 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:40:52,133 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:40:52,133 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:40:52,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:40:52,134 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:40:52,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:40:52,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:40:52,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:40:52,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:40:52,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:40:52,135 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:40:52,135 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:40:52,136 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:40:52,136 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:40:52,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:40:52,136 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:40:52,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:40:52,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:40:52,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:40:52,142 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:40:52,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:40:52,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:40:52,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:40:52,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:40:52,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:40:52,144 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:40:52,144 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:40:52,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:40:52,145 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:40:52,145 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_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan 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 -> Taipan 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 -> 9b4984d971b5a5a3b565edf502e7d7464558f166 [2019-11-26 02:40:52,426 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:40:52,439 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:40:52,442 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:40:52,443 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:40:52,444 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:40:52,444 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan/../../sv-benchmarks/c/floats-cdfpl/square_1.i [2019-11-26 02:40:52,501 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan/data/54fa11673/97567494de32465a97ffc854f57d084c/FLAG9c4943bec [2019-11-26 02:40:52,893 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:40:52,894 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_08f5b44a-87aa-41f4-bf69-76621f988e58/sv-benchmarks/c/floats-cdfpl/square_1.i [2019-11-26 02:40:52,899 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan/data/54fa11673/97567494de32465a97ffc854f57d084c/FLAG9c4943bec [2019-11-26 02:40:53,332 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan/data/54fa11673/97567494de32465a97ffc854f57d084c [2019-11-26 02:40:53,335 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:40:53,336 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:40:53,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:40:53,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:40:53,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:40:53,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:40:53" (1/1) ... [2019-11-26 02:40:53,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7631a39b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:53, skipping insertion in model container [2019-11-26 02:40:53,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:40:53" (1/1) ... [2019-11-26 02:40:53,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:40:53,374 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:40:53,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:40:53,540 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:40:53,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:40:53,568 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:40:53,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:53 WrapperNode [2019-11-26 02:40:53,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:40:53,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:40:53,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:40:53,570 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:40:53,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:53" (1/1) ... [2019-11-26 02:40:53,584 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:53" (1/1) ... [2019-11-26 02:40:53,652 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:40:53,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:40:53,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:40:53,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:40:53,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:53" (1/1) ... [2019-11-26 02:40:53,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:53" (1/1) ... [2019-11-26 02:40:53,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:53" (1/1) ... [2019-11-26 02:40:53,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:53" (1/1) ... [2019-11-26 02:40:53,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:53" (1/1) ... [2019-11-26 02:40:53,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:53" (1/1) ... [2019-11-26 02:40:53,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:53" (1/1) ... [2019-11-26 02:40:53,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:40:53,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:40:53,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:40:53,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:40:53,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan/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 [2019-11-26 02:40:53,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:40:53,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:40:55,919 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:40:55,919 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-26 02:40:55,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:40:55 BoogieIcfgContainer [2019-11-26 02:40:55,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:40:55,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:40:55,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:40:55,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:40:55,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:40:53" (1/3) ... [2019-11-26 02:40:55,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a31e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:40:55, skipping insertion in model container [2019-11-26 02:40:55,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:53" (2/3) ... [2019-11-26 02:40:55,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a31e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:40:55, skipping insertion in model container [2019-11-26 02:40:55,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:40:55" (3/3) ... [2019-11-26 02:40:55,927 INFO L109 eAbstractionObserver]: Analyzing ICFG square_1.i [2019-11-26 02:40:55,935 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:40:55,941 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:40:55,951 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:40:55,970 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:40:55,970 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:40:55,970 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:40:55,970 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:40:55,971 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:40:55,971 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:40:55,971 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:40:55,971 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:40:55,982 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-26 02:40:55,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 02:40:55,987 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:40:55,988 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-26 02:40:55,988 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:40:55,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:40:55,994 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2019-11-26 02:40:56,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:40:56,003 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279328272] [2019-11-26 02:40:56,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan/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 [2019-11-26 02:41:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:41:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:41:27,954 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-11-26 02:41:27,955 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:41:28,156 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-26 02:41:28,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:41:28 BoogieIcfgContainer [2019-11-26 02:41:28,169 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:41:28,170 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:41:28,170 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:41:28,170 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:41:28,171 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:40:55" (3/4) ... [2019-11-26 02:41:28,172 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:41:28,211 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_08f5b44a-87aa-41f4-bf69-76621f988e58/bin/utaipan/witness.graphml [2019-11-26 02:41:28,211 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:41:28,216 INFO L168 Benchmark]: Toolchain (without parser) took 34876.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 961.8 MB in the beginning and 1.1 GB in the end (delta: -155.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:41:28,217 INFO L168 Benchmark]: CDTParser took 0.23 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. [2019-11-26 02:41:28,222 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.36 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:41:28,223 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 951.0 MB in the beginning and 1.2 GB in the end (delta: -206.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:41:28,224 INFO L168 Benchmark]: Boogie Preprocessor took 19.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:41:28,225 INFO L168 Benchmark]: RCFGBuilder took 2248.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:41:28,225 INFO L168 Benchmark]: TraceAbstraction took 32248.16 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: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:41:28,226 INFO L168 Benchmark]: Witness Printer took 41.68 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. [2019-11-26 02:41:28,233 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 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 232.36 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 82.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 951.0 MB in the beginning and 1.2 GB in the end (delta: -206.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2248.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 32248.16 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: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * Witness Printer took 41.68 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 < 1.39f) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: UNSAFE, OverallTime: 32.1s, 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=9occurred 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, 16.8s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 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...