./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 30af8e98893bfcc9c7b0879f6e0cde9a5cbf7714 ......................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 30af8e98893bfcc9c7b0879f6e0cde9a5cbf7714 ............................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 10:26:26,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 10:26:26,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 10:26:26,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 10:26:26,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 10:26:26,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 10:26:26,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 10:26:26,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 10:26:26,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 10:26:26,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 10:26:26,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 10:26:26,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 10:26:26,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 10:26:26,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 10:26:26,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 10:26:26,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 10:26:26,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 10:26:26,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 10:26:26,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 10:26:26,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 10:26:26,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 10:26:26,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 10:26:26,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 10:26:26,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 10:26:26,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 10:26:26,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 10:26:26,874 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 10:26:26,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 10:26:26,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 10:26:26,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 10:26:26,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 10:26:26,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 10:26:26,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 10:26:26,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 10:26:26,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 10:26:26,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 10:26:26,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 10:26:26,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 10:26:26,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 10:26:26,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 10:26:26,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 10:26:26,881 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 10:26:26,890 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 10:26:26,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 10:26:26,891 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 10:26:26,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 10:26:26,891 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 10:26:26,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 10:26:26,892 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 10:26:26,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 10:26:26,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 10:26:26,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 10:26:26,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 10:26:26,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 10:26:26,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 10:26:26,893 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 10:26:26,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 10:26:26,893 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 10:26:26,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 10:26:26,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 10:26:26,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 10:26:26,893 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 10:26:26,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 10:26:26,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:26:26,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 10:26:26,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 10:26:26,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 10:26:26,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 10:26:26,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 10:26:26,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 10:26:26,894 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 10:26:26,895 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_db4874e8-15b7-4d7d-a600-17c97f463a79/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30af8e98893bfcc9c7b0879f6e0cde9a5cbf7714 [2019-12-07 10:26:26,994 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 10:26:27,003 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 10:26:27,006 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 10:26:27,007 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 10:26:27,008 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 10:26:27,008 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_2.i [2019-12-07 10:26:27,049 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/bin/uautomizer/data/3b05811a6/006fc04d0591432995774ca2721193b9/FLAGdf43ece9f [2019-12-07 10:26:27,384 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 10:26:27,385 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/sv-benchmarks/c/floats-cdfpl/square_2.i [2019-12-07 10:26:27,388 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/bin/uautomizer/data/3b05811a6/006fc04d0591432995774ca2721193b9/FLAGdf43ece9f [2019-12-07 10:26:27,397 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/bin/uautomizer/data/3b05811a6/006fc04d0591432995774ca2721193b9 [2019-12-07 10:26:27,399 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 10:26:27,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 10:26:27,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 10:26:27,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 10:26:27,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 10:26:27,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:26:27" (1/1) ... [2019-12-07 10:26:27,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@605e252b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:26:27, skipping insertion in model container [2019-12-07 10:26:27,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:26:27" (1/1) ... [2019-12-07 10:26:27,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 10:26:27,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 10:26:27,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:26:27,557 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 10:26:27,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:26:27,576 INFO L208 MainTranslator]: Completed translation [2019-12-07 10:26:27,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:26:27 WrapperNode [2019-12-07 10:26:27,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 10:26:27,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 10:26:27,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 10:26:27,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 10:26:27,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:26:27" (1/1) ... [2019-12-07 10:26:27,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:26:27" (1/1) ... [2019-12-07 10:26:27,596 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 10:26:27,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 10:26:27,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 10:26:27,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 10:26:27,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:26:27" (1/1) ... [2019-12-07 10:26:27,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:26:27" (1/1) ... [2019-12-07 10:26:27,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:26:27" (1/1) ... [2019-12-07 10:26:27,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:26:27" (1/1) ... [2019-12-07 10:26:27,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:26:27" (1/1) ... [2019-12-07 10:26:27,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:26:27" (1/1) ... [2019-12-07 10:26:27,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:26:27" (1/1) ... [2019-12-07 10:26:27,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 10:26:27,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 10:26:27,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 10:26:27,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 10:26:27,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:26:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/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 [2019-12-07 10:26:27,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 10:26:27,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 10:26:27,721 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 10:26:27,721 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 10:26:27,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:26:27 BoogieIcfgContainer [2019-12-07 10:26:27,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 10:26:27,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 10:26:27,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 10:26:27,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 10:26:27,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 10:26:27" (1/3) ... [2019-12-07 10:26:27,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a3a756c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:26:27, skipping insertion in model container [2019-12-07 10:26:27,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:26:27" (2/3) ... [2019-12-07 10:26:27,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a3a756c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:26:27, skipping insertion in model container [2019-12-07 10:26:27,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:26:27" (3/3) ... [2019-12-07 10:26:27,727 INFO L109 eAbstractionObserver]: Analyzing ICFG square_2.i [2019-12-07 10:26:27,733 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 10:26:27,736 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 10:26:27,743 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 10:26:27,757 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 10:26:27,757 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 10:26:27,757 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 10:26:27,757 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 10:26:27,758 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 10:26:27,758 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 10:26:27,758 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 10:26:27,758 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 10:26:27,766 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-12-07 10:26:27,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 10:26:27,770 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:26:27,770 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 10:26:27,770 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:26:27,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:26:27,774 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-12-07 10:26:27,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:26:27,779 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670231063] [2019-12-07 10:26:27,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:26:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:26:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:26:27,849 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 10:26:27,850 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 10:26:27,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 10:26:27 BoogieIcfgContainer [2019-12-07 10:26:27,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 10:26:27,860 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 10:26:27,861 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 10:26:27,861 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 10:26:27,861 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:26:27" (3/4) ... [2019-12-07 10:26:27,863 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 10:26:27,863 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 10:26:27,865 INFO L168 Benchmark]: Toolchain (without parser) took 465.06 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 945.1 MB in the beginning and 1.1 GB in the end (delta: -117.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:26:27,866 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:26:27,866 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.51 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 945.1 MB in the beginning and 1.1 GB in the end (delta: -144.2 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2019-12-07 10:26:27,867 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.34 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:26:27,867 INFO L168 Benchmark]: Boogie Preprocessor took 10.50 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:26:27,867 INFO L168 Benchmark]: RCFGBuilder took 115.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-12-07 10:26:27,868 INFO L168 Benchmark]: TraceAbstraction took 137.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 10:26:27,868 INFO L168 Benchmark]: Witness Printer took 3.13 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:26:27,870 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 176.51 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 945.1 MB in the beginning and 1.1 GB in the end (delta: -144.2 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.34 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.50 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 115.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 137.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 3.13 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryArithmeticFLOAToperation at line 12. Possible FailurePath: [L6] float IN = __VERIFIER_nondet_float(); [L9] float x = IN; [L11-L12] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L14] COND TRUE !(result >= 0.0f && result < 1.398f) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.0s, 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 0.1.25-f470102 [2019-12-07 10:26:29,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 10:26:29,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 10:26:29,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 10:26:29,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 10:26:29,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 10:26:29,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 10:26:29,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 10:26:29,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 10:26:29,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 10:26:29,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 10:26:29,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 10:26:29,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 10:26:29,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 10:26:29,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 10:26:29,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 10:26:29,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 10:26:29,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 10:26:29,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 10:26:29,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 10:26:29,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 10:26:29,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 10:26:29,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 10:26:29,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 10:26:29,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 10:26:29,272 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 10:26:29,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 10:26:29,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 10:26:29,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 10:26:29,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 10:26:29,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 10:26:29,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 10:26:29,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 10:26:29,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 10:26:29,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 10:26:29,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 10:26:29,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 10:26:29,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 10:26:29,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 10:26:29,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 10:26:29,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 10:26:29,278 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 10:26:29,289 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 10:26:29,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 10:26:29,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 10:26:29,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 10:26:29,291 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 10:26:29,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 10:26:29,292 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 10:26:29,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 10:26:29,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 10:26:29,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 10:26:29,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 10:26:29,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 10:26:29,293 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 10:26:29,293 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 10:26:29,293 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 10:26:29,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 10:26:29,293 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 10:26:29,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 10:26:29,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 10:26:29,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 10:26:29,294 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 10:26:29,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 10:26:29,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:26:29,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 10:26:29,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 10:26:29,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 10:26:29,295 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 10:26:29,295 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 10:26:29,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 10:26:29,296 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 10:26:29,296 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 10:26:29,296 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_db4874e8-15b7-4d7d-a600-17c97f463a79/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30af8e98893bfcc9c7b0879f6e0cde9a5cbf7714 [2019-12-07 10:26:29,466 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 10:26:29,476 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 10:26:29,479 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 10:26:29,480 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 10:26:29,481 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 10:26:29,481 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_2.i [2019-12-07 10:26:29,524 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/bin/uautomizer/data/87dc388c1/ddac36a58e4c47cf9a3564ad1f6dc05a/FLAG96ef755de [2019-12-07 10:26:29,902 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 10:26:29,903 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/sv-benchmarks/c/floats-cdfpl/square_2.i [2019-12-07 10:26:29,906 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/bin/uautomizer/data/87dc388c1/ddac36a58e4c47cf9a3564ad1f6dc05a/FLAG96ef755de [2019-12-07 10:26:30,299 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/bin/uautomizer/data/87dc388c1/ddac36a58e4c47cf9a3564ad1f6dc05a [2019-12-07 10:26:30,302 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 10:26:30,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 10:26:30,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 10:26:30,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 10:26:30,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 10:26:30,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:26:30" (1/1) ... [2019-12-07 10:26:30,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31403813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:26:30, skipping insertion in model container [2019-12-07 10:26:30,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:26:30" (1/1) ... [2019-12-07 10:26:30,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 10:26:30,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 10:26:30,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:26:30,437 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 10:26:30,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:26:30,457 INFO L208 MainTranslator]: Completed translation [2019-12-07 10:26:30,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:26:30 WrapperNode [2019-12-07 10:26:30,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 10:26:30,458 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 10:26:30,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 10:26:30,458 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 10:26:30,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:26:30" (1/1) ... [2019-12-07 10:26:30,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:26:30" (1/1) ... [2019-12-07 10:26:30,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 10:26:30,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 10:26:30,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 10:26:30,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 10:26:30,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:26:30" (1/1) ... [2019-12-07 10:26:30,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:26:30" (1/1) ... [2019-12-07 10:26:30,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:26:30" (1/1) ... [2019-12-07 10:26:30,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:26:30" (1/1) ... [2019-12-07 10:26:30,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:26:30" (1/1) ... [2019-12-07 10:26:30,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:26:30" (1/1) ... [2019-12-07 10:26:30,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:26:30" (1/1) ... [2019-12-07 10:26:30,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 10:26:30,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 10:26:30,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 10:26:30,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 10:26:30,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:26:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/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 [2019-12-07 10:26:30,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 10:26:30,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 10:26:32,718 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 10:26:32,718 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 10:26:32,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:26:32 BoogieIcfgContainer [2019-12-07 10:26:32,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 10:26:32,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 10:26:32,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 10:26:32,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 10:26:32,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 10:26:30" (1/3) ... [2019-12-07 10:26:32,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28697869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:26:32, skipping insertion in model container [2019-12-07 10:26:32,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:26:30" (2/3) ... [2019-12-07 10:26:32,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28697869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:26:32, skipping insertion in model container [2019-12-07 10:26:32,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:26:32" (3/3) ... [2019-12-07 10:26:32,724 INFO L109 eAbstractionObserver]: Analyzing ICFG square_2.i [2019-12-07 10:26:32,730 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 10:26:32,734 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 10:26:32,742 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 10:26:32,756 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 10:26:32,756 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 10:26:32,756 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 10:26:32,756 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 10:26:32,756 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 10:26:32,756 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 10:26:32,757 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 10:26:32,757 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 10:26:32,767 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-12-07 10:26:32,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 10:26:32,771 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:26:32,771 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 10:26:32,772 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:26:32,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:26:32,775 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2019-12-07 10:26:32,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 10:26:32,783 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145179376] [2019-12-07 10:26:32,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/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 [2019-12-07 10:28:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:28:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:28:49,170 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-12-07 10:28:49,170 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 10:28:49,371 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 10:28:49,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 10:28:49 BoogieIcfgContainer [2019-12-07 10:28:49,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 10:28:49,389 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 10:28:49,389 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 10:28:49,389 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 10:28:49,389 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:26:32" (3/4) ... [2019-12-07 10:28:49,391 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 10:28:49,418 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_db4874e8-15b7-4d7d-a600-17c97f463a79/bin/uautomizer/witness.graphml [2019-12-07 10:28:49,418 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 10:28:49,420 INFO L168 Benchmark]: Toolchain (without parser) took 139116.56 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -125.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:28:49,420 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:28:49,421 INFO L168 Benchmark]: CACSL2BoogieTranslator took 153.81 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 10:28:49,421 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.99 ms. Allocated memory is still 1.0 GB. Free memory was 940.3 MB in the beginning and 934.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 10:28:49,422 INFO L168 Benchmark]: Boogie Preprocessor took 42.81 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 934.9 MB in the beginning and 1.1 GB in the end (delta: -173.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-12-07 10:28:49,422 INFO L168 Benchmark]: RCFGBuilder took 2196.86 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2019-12-07 10:28:49,423 INFO L168 Benchmark]: TraceAbstraction took 136668.90 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. [2019-12-07 10:28:49,424 INFO L168 Benchmark]: Witness Printer took 29.42 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:28:49,426 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 153.81 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.3 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 20.99 ms. Allocated memory is still 1.0 GB. Free memory was 940.3 MB in the beginning and 934.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 42.81 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 934.9 MB in the beginning and 1.1 GB in the end (delta: -173.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2196.86 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 136668.90 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. * Witness Printer took 29.42 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L6] float IN = __VERIFIER_nondet_float(); [L9] float x = IN; [L11-L12] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L14] COND TRUE !(result >= 0.0f && result < 1.398f) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: UNSAFE, OverallTime: 136.6s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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, 104.9s 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...