./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2a125888-b7d5-4687-8547-2eefbd30b0a0/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2a125888-b7d5-4687-8547-2eefbd30b0a0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2a125888-b7d5-4687-8547-2eefbd30b0a0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2a125888-b7d5-4687-8547-2eefbd30b0a0/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_2a125888-b7d5-4687-8547-2eefbd30b0a0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2a125888-b7d5-4687-8547-2eefbd30b0a0/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 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_2a125888-b7d5-4687-8547-2eefbd30b0a0/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2a125888-b7d5-4687-8547-2eefbd30b0a0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2a125888-b7d5-4687-8547-2eefbd30b0a0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2a125888-b7d5-4687-8547-2eefbd30b0a0/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_2a125888-b7d5-4687-8547-2eefbd30b0a0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2a125888-b7d5-4687-8547-2eefbd30b0a0/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 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 0.1.24-678e011 [2019-11-20 05:03:53,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 05:03:53,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 05:03:53,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 05:03:53,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 05:03:53,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 05:03:53,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 05:03:53,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 05:03:53,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 05:03:53,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 05:03:53,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 05:03:53,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 05:03:53,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 05:03:53,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 05:03:53,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 05:03:53,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 05:03:53,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 05:03:53,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 05:03:53,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 05:03:53,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 05:03:53,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 05:03:53,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 05:03:53,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 05:03:53,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 05:03:53,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 05:03:53,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 05:03:53,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 05:03:53,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 05:03:53,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 05:03:53,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 05:03:53,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 05:03:53,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 05:03:53,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 05:03:53,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 05:03:53,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 05:03:53,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 05:03:53,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 05:03:53,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 05:03:53,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 05:03:53,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 05:03:53,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 05:03:53,734 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2a125888-b7d5-4687-8547-2eefbd30b0a0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 05:03:53,750 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 05:03:53,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 05:03:53,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 05:03:53,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 05:03:53,752 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 05:03:53,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 05:03:53,752 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 05:03:53,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 05:03:53,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 05:03:53,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 05:03:53,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 05:03:53,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 05:03:53,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 05:03:53,754 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 05:03:53,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 05:03:53,755 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 05:03:53,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 05:03:53,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 05:03:53,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 05:03:53,756 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 05:03:53,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 05:03:53,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 05:03:53,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 05:03:53,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 05:03:53,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 05:03:53,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 05:03:53,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 05:03:53,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 05:03:53,758 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_2a125888-b7d5-4687-8547-2eefbd30b0a0/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 -> 9b4984d971b5a5a3b565edf502e7d7464558f166 [2019-11-20 05:03:53,926 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 05:03:53,938 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 05:03:53,942 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 05:03:53,944 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 05:03:53,944 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 05:03:53,945 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2a125888-b7d5-4687-8547-2eefbd30b0a0/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_1.i [2019-11-20 05:03:54,010 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2a125888-b7d5-4687-8547-2eefbd30b0a0/bin/uautomizer/data/61b041d9d/d097e3317a804149b2110bd49e69e98d/FLAG5db49854f [2019-11-20 05:03:54,398 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 05:03:54,399 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2a125888-b7d5-4687-8547-2eefbd30b0a0/sv-benchmarks/c/floats-cdfpl/square_1.i [2019-11-20 05:03:54,405 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2a125888-b7d5-4687-8547-2eefbd30b0a0/bin/uautomizer/data/61b041d9d/d097e3317a804149b2110bd49e69e98d/FLAG5db49854f [2019-11-20 05:03:54,867 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2a125888-b7d5-4687-8547-2eefbd30b0a0/bin/uautomizer/data/61b041d9d/d097e3317a804149b2110bd49e69e98d [2019-11-20 05:03:54,870 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 05:03:54,873 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 05:03:54,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 05:03:54,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 05:03:54,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 05:03:54,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:03:54" (1/1) ... [2019-11-20 05:03:54,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35b3a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:54, skipping insertion in model container [2019-11-20 05:03:54,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:03:54" (1/1) ... [2019-11-20 05:03:54,899 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 05:03:54,919 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 05:03:55,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:03:55,148 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 05:03:55,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:03:55,302 INFO L192 MainTranslator]: Completed translation [2019-11-20 05:03:55,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:55 WrapperNode [2019-11-20 05:03:55,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 05:03:55,304 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 05:03:55,304 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 05:03:55,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 05:03:55,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:55" (1/1) ... [2019-11-20 05:03:55,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:55" (1/1) ... [2019-11-20 05:03:55,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 05:03:55,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 05:03:55,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 05:03:55,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 05:03:55,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:55" (1/1) ... [2019-11-20 05:03:55,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:55" (1/1) ... [2019-11-20 05:03:55,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:55" (1/1) ... [2019-11-20 05:03:55,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:55" (1/1) ... [2019-11-20 05:03:55,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:55" (1/1) ... [2019-11-20 05:03:55,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:55" (1/1) ... [2019-11-20 05:03:55,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:55" (1/1) ... [2019-11-20 05:03:55,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 05:03:55,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 05:03:55,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 05:03:55,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 05:03:55,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a125888-b7d5-4687-8547-2eefbd30b0a0/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 05:03:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 05:03:55,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 05:03:55,599 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 05:03:55,600 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-20 05:03:55,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:03:55 BoogieIcfgContainer [2019-11-20 05:03:55,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 05:03:55,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 05:03:55,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 05:03:55,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 05:03:55,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:03:54" (1/3) ... [2019-11-20 05:03:55,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7037cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:03:55, skipping insertion in model container [2019-11-20 05:03:55,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:55" (2/3) ... [2019-11-20 05:03:55,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7037cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:03:55, skipping insertion in model container [2019-11-20 05:03:55,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:03:55" (3/3) ... [2019-11-20 05:03:55,610 INFO L109 eAbstractionObserver]: Analyzing ICFG square_1.i [2019-11-20 05:03:55,621 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 05:03:55,628 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 05:03:55,646 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 05:03:55,677 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 05:03:55,677 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 05:03:55,677 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 05:03:55,678 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 05:03:55,678 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 05:03:55,678 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 05:03:55,678 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 05:03:55,679 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 05:03:55,700 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-20 05:03:55,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-20 05:03:55,708 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:03:55,709 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-20 05:03:55,709 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:03:55,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:03:55,716 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-20 05:03:55,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:03:55,726 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939910644] [2019-11-20 05:03:55,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:03:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:03:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:03:55,867 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:03:55,868 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 05:03:55,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:03:55 BoogieIcfgContainer [2019-11-20 05:03:55,889 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 05:03:55,889 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 05:03:55,890 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 05:03:55,890 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 05:03:55,891 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:03:55" (3/4) ... [2019-11-20 05:03:55,895 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 05:03:55,896 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 05:03:55,900 INFO L168 Benchmark]: Toolchain (without parser) took 1024.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -175.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:03:55,902 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:03:55,903 INFO L168 Benchmark]: CACSL2BoogieTranslator took 426.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 951.4 MB in the beginning and 1.2 GB in the end (delta: -204.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-20 05:03:55,904 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:03:55,905 INFO L168 Benchmark]: Boogie Preprocessor took 26.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:03:55,907 INFO L168 Benchmark]: RCFGBuilder took 230.92 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-20 05:03:55,908 INFO L168 Benchmark]: TraceAbstraction took 286.73 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. [2019-11-20 05:03:55,909 INFO L168 Benchmark]: Witness Printer took 6.38 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 05:03:55,919 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 426.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 951.4 MB in the beginning and 1.2 GB in the end (delta: -204.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 230.92 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 286.73 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 6.38 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, 8 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 05:03:58,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 05:03:58,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 05:03:58,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 05:03:58,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 05:03:58,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 05:03:58,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 05:03:58,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 05:03:58,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 05:03:58,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 05:03:58,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 05:03:58,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 05:03:58,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 05:03:58,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 05:03:58,103 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 05:03:58,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 05:03:58,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 05:03:58,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 05:03:58,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 05:03:58,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 05:03:58,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 05:03:58,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 05:03:58,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 05:03:58,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 05:03:58,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 05:03:58,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 05:03:58,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 05:03:58,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 05:03:58,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 05:03:58,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 05:03:58,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 05:03:58,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 05:03:58,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 05:03:58,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 05:03:58,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 05:03:58,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 05:03:58,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 05:03:58,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 05:03:58,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 05:03:58,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 05:03:58,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 05:03:58,133 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2a125888-b7d5-4687-8547-2eefbd30b0a0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-20 05:03:58,152 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 05:03:58,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 05:03:58,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 05:03:58,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 05:03:58,154 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 05:03:58,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 05:03:58,155 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 05:03:58,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 05:03:58,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 05:03:58,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 05:03:58,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 05:03:58,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 05:03:58,157 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 05:03:58,157 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 05:03:58,158 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 05:03:58,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 05:03:58,158 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 05:03:58,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 05:03:58,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 05:03:58,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 05:03:58,159 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 05:03:58,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 05:03:58,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 05:03:58,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 05:03:58,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 05:03:58,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 05:03:58,161 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 05:03:58,162 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 05:03:58,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 05:03:58,162 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 05:03:58,162 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_2a125888-b7d5-4687-8547-2eefbd30b0a0/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 -> 9b4984d971b5a5a3b565edf502e7d7464558f166 [2019-11-20 05:03:58,612 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 05:03:58,625 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 05:03:58,628 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 05:03:58,630 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 05:03:58,631 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 05:03:58,631 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2a125888-b7d5-4687-8547-2eefbd30b0a0/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_1.i [2019-11-20 05:03:58,692 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2a125888-b7d5-4687-8547-2eefbd30b0a0/bin/uautomizer/data/102d9c333/bef39ff9b6b64448a123d7f83997c734/FLAG02be6ff7e [2019-11-20 05:03:59,119 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 05:03:59,120 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2a125888-b7d5-4687-8547-2eefbd30b0a0/sv-benchmarks/c/floats-cdfpl/square_1.i [2019-11-20 05:03:59,128 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2a125888-b7d5-4687-8547-2eefbd30b0a0/bin/uautomizer/data/102d9c333/bef39ff9b6b64448a123d7f83997c734/FLAG02be6ff7e [2019-11-20 05:03:59,474 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2a125888-b7d5-4687-8547-2eefbd30b0a0/bin/uautomizer/data/102d9c333/bef39ff9b6b64448a123d7f83997c734 [2019-11-20 05:03:59,477 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 05:03:59,479 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 05:03:59,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 05:03:59,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 05:03:59,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 05:03:59,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:03:59" (1/1) ... [2019-11-20 05:03:59,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23efccf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:59, skipping insertion in model container [2019-11-20 05:03:59,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:03:59" (1/1) ... [2019-11-20 05:03:59,498 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 05:03:59,525 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 05:03:59,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:03:59,766 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 05:03:59,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:03:59,813 INFO L192 MainTranslator]: Completed translation [2019-11-20 05:03:59,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:59 WrapperNode [2019-11-20 05:03:59,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 05:03:59,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 05:03:59,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 05:03:59,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 05:03:59,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:59" (1/1) ... [2019-11-20 05:03:59,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:59" (1/1) ... [2019-11-20 05:03:59,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 05:03:59,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 05:03:59,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 05:03:59,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 05:03:59,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:59" (1/1) ... [2019-11-20 05:03:59,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:59" (1/1) ... [2019-11-20 05:03:59,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:59" (1/1) ... [2019-11-20 05:03:59,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:59" (1/1) ... [2019-11-20 05:03:59,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:59" (1/1) ... [2019-11-20 05:03:59,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:59" (1/1) ... [2019-11-20 05:03:59,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:59" (1/1) ... [2019-11-20 05:03:59,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 05:03:59,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 05:03:59,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 05:03:59,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 05:03:59,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a125888-b7d5-4687-8547-2eefbd30b0a0/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 05:04:00,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 05:04:00,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 05:04:02,321 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 05:04:02,321 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-20 05:04:02,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:04:02 BoogieIcfgContainer [2019-11-20 05:04:02,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 05:04:02,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 05:04:02,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 05:04:02,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 05:04:02,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:03:59" (1/3) ... [2019-11-20 05:04:02,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@171f339b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:04:02, skipping insertion in model container [2019-11-20 05:04:02,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:03:59" (2/3) ... [2019-11-20 05:04:02,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@171f339b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:04:02, skipping insertion in model container [2019-11-20 05:04:02,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:04:02" (3/3) ... [2019-11-20 05:04:02,329 INFO L109 eAbstractionObserver]: Analyzing ICFG square_1.i [2019-11-20 05:04:02,339 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 05:04:02,345 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 05:04:02,354 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 05:04:02,379 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 05:04:02,379 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 05:04:02,379 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 05:04:02,380 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 05:04:02,380 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 05:04:02,380 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 05:04:02,381 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 05:04:02,381 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 05:04:02,396 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-20 05:04:02,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-20 05:04:02,403 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:04:02,404 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-20 05:04:02,404 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:04:02,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:04:02,411 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-20 05:04:02,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:04:02,424 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819868554] [2019-11-20 05:04:02,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a125888-b7d5-4687-8547-2eefbd30b0a0/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 05:09:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:10:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:10:11,760 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-20 05:10:11,761 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 05:10:11,963 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-20 05:10:11,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:10:11 BoogieIcfgContainer [2019-11-20 05:10:11,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 05:10:11,979 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 05:10:11,979 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 05:10:11,979 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 05:10:11,980 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:04:02" (3/4) ... [2019-11-20 05:10:11,982 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 05:10:12,014 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2a125888-b7d5-4687-8547-2eefbd30b0a0/bin/uautomizer/witness.graphml [2019-11-20 05:10:12,014 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 05:10:12,017 INFO L168 Benchmark]: Toolchain (without parser) took 372537.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -119.7 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2019-11-20 05:10:12,017 INFO L168 Benchmark]: CDTParser took 0.28 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 05:10:12,018 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.14 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-20 05:10:12,019 INFO L168 Benchmark]: Boogie Procedure Inliner took 106.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 949.7 MB in the beginning and 1.1 GB in the end (delta: -177.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-20 05:10:12,020 INFO L168 Benchmark]: Boogie Preprocessor took 27.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-20 05:10:12,020 INFO L168 Benchmark]: RCFGBuilder took 2373.17 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2019-11-20 05:10:12,021 INFO L168 Benchmark]: TraceAbstraction took 369655.21 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: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 11.5 GB. [2019-11-20 05:10:12,022 INFO L168 Benchmark]: Witness Printer took 35.64 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 05:10:12,025 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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 333.14 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.7 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 106.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 949.7 MB in the beginning and 1.1 GB in the end (delta: -177.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2373.17 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 369655.21 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: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 11.5 GB. * Witness Printer took 35.64 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, 8 locations, 1 error locations. Result: UNSAFE, OverallTime: 369.5s, 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, 324.1s 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...