./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/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: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/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 0.1.23-1dbac8b [2018-10-26 22:18:43,900 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:18:43,901 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:18:43,912 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:18:43,913 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:18:43,915 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:18:43,916 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:18:43,917 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:18:43,919 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:18:43,920 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:18:43,921 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:18:43,921 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:18:43,922 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:18:43,923 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:18:43,924 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:18:43,925 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:18:43,926 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:18:43,928 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:18:43,930 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:18:43,931 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:18:43,932 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:18:43,933 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:18:43,937 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:18:43,937 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:18:43,938 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:18:43,938 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:18:43,939 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:18:43,940 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:18:43,941 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:18:43,942 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:18:43,942 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:18:43,943 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 22:18:43,943 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 22:18:43,943 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 22:18:43,947 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 22:18:43,948 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 22:18:43,948 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-26 22:18:43,967 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:18:43,967 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:18:43,970 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:18:43,970 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:18:43,971 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:18:43,971 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:18:43,971 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:18:43,971 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:18:43,972 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 22:18:43,972 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:18:43,972 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 22:18:43,972 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:18:43,972 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:18:43,972 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:18:43,973 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:18:43,973 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 22:18:43,973 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:18:43,973 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:18:43,973 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:18:43,973 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:18:43,974 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:18:43,974 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:18:43,974 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:18:43,974 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:18:43,974 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:18:43,974 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:18:43,974 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 22:18:43,975 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:18:43,975 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:18:43,975 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/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 [2018-10-26 22:18:44,012 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:18:44,024 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:18:44,027 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:18:44,029 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:18:44,029 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:18:44,030 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i [2018-10-26 22:18:44,086 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/uautomizer/data/0976d6bb4/8362c31c4de74c0882465ac627bca4ae/FLAG51c2749d3 [2018-10-26 22:18:44,441 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:18:44,442 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/sv-benchmarks/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i [2018-10-26 22:18:44,449 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/uautomizer/data/0976d6bb4/8362c31c4de74c0882465ac627bca4ae/FLAG51c2749d3 [2018-10-26 22:18:44,464 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/uautomizer/data/0976d6bb4/8362c31c4de74c0882465ac627bca4ae [2018-10-26 22:18:44,467 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:18:44,469 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:18:44,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:18:44,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:18:44,473 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:18:44,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:18:44" (1/1) ... [2018-10-26 22:18:44,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33175320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:44, skipping insertion in model container [2018-10-26 22:18:44,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:18:44" (1/1) ... [2018-10-26 22:18:44,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:18:44,504 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:18:44,648 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:18:44,652 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:18:44,666 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:18:44,680 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:18:44,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:44 WrapperNode [2018-10-26 22:18:44,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:18:44,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:18:44,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:18:44,681 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:18:44,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:44" (1/1) ... [2018-10-26 22:18:44,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:44" (1/1) ... [2018-10-26 22:18:44,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:44" (1/1) ... [2018-10-26 22:18:44,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:44" (1/1) ... [2018-10-26 22:18:44,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:44" (1/1) ... [2018-10-26 22:18:44,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:44" (1/1) ... [2018-10-26 22:18:44,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:44" (1/1) ... [2018-10-26 22:18:44,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:18:44,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:18:44,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:18:44,709 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:18:44,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/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 [2018-10-26 22:18:44,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 22:18:44,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:18:44,776 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 22:18:44,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 22:18:44,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-10-26 22:18:44,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-10-26 22:18:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 22:18:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 22:18:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:18:45,116 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:18:45,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:18:45 BoogieIcfgContainer [2018-10-26 22:18:45,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:18:45,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:18:45,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:18:45,122 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:18:45,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:18:44" (1/3) ... [2018-10-26 22:18:45,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@96a6d70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:18:45, skipping insertion in model container [2018-10-26 22:18:45,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:44" (2/3) ... [2018-10-26 22:18:45,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@96a6d70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:18:45, skipping insertion in model container [2018-10-26 22:18:45,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:18:45" (3/3) ... [2018-10-26 22:18:45,130 INFO L112 eAbstractionObserver]: Analyzing ICFG square_1_false-unreach-call_true-termination.i [2018-10-26 22:18:45,141 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:18:45,149 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:18:45,167 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:18:45,198 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:18:45,199 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:18:45,199 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:18:45,200 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:18:45,200 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:18:45,200 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:18:45,200 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:18:45,200 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:18:45,200 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:18:45,219 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-10-26 22:18:45,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-26 22:18:45,225 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:18:45,226 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:18:45,229 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:18:45,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:18:45,235 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-10-26 22:18:45,237 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:18:45,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:18:45,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:45,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:18:45,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:18:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:18:45,350 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 22:18:45,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:18:45 BoogieIcfgContainer [2018-10-26 22:18:45,377 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:18:45,377 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 22:18:45,377 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 22:18:45,377 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 22:18:45,378 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:18:45" (3/4) ... [2018-10-26 22:18:45,382 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-26 22:18:45,382 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 22:18:45,383 INFO L168 Benchmark]: Toolchain (without parser) took 914.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 963.4 MB in the beginning and 1.1 GB in the end (delta: -159.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:18:45,388 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:18:45,389 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.44 ms. Allocated memory is still 1.0 GB. Free memory was 963.4 MB in the beginning and 952.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 22:18:45,390 INFO L168 Benchmark]: Boogie Preprocessor took 27.42 ms. Allocated memory is still 1.0 GB. Free memory is still 952.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:18:45,390 INFO L168 Benchmark]: RCFGBuilder took 407.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -187.2 MB). Peak memory consumption was 25.4 MB. Max. memory is 11.5 GB. [2018-10-26 22:18:45,393 INFO L168 Benchmark]: TraceAbstraction took 258.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. [2018-10-26 22:18:45,394 INFO L168 Benchmark]: Witness Printer took 5.08 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. [2018-10-26 22:18:45,397 INFO L336 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 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 211.44 ms. Allocated memory is still 1.0 GB. Free memory was 963.4 MB in the beginning and 952.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.42 ms. Allocated memory is still 1.0 GB. Free memory is still 952.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 407.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -187.2 MB). Peak memory consumption was 25.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 258.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. * Witness Printer took 5.08 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; VAL [IN=0, x=0] [L14] COND TRUE !(result >= 0.0f && result < 1.39f) VAL [IN=0, x=0] [L15] __VERIFIER_error() VAL [IN=0, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: 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 0.1.23-1dbac8b [2018-10-26 22:18:47,700 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:18:47,702 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:18:47,718 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:18:47,718 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:18:47,720 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:18:47,722 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:18:47,725 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:18:47,727 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:18:47,729 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:18:47,731 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:18:47,731 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:18:47,732 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:18:47,733 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:18:47,734 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:18:47,735 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:18:47,738 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:18:47,742 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:18:47,751 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:18:47,752 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:18:47,753 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:18:47,754 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:18:47,759 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:18:47,759 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:18:47,759 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:18:47,760 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:18:47,761 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:18:47,762 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:18:47,762 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:18:47,764 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:18:47,764 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:18:47,765 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 22:18:47,765 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 22:18:47,765 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 22:18:47,766 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 22:18:47,767 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 22:18:47,767 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-10-26 22:18:47,780 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:18:47,781 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:18:47,781 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:18:47,782 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:18:47,782 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:18:47,782 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:18:47,783 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:18:47,783 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:18:47,783 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 22:18:47,783 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 22:18:47,785 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:18:47,785 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:18:47,785 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:18:47,785 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:18:47,785 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 22:18:47,786 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 22:18:47,786 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 22:18:47,786 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:18:47,787 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:18:47,787 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:18:47,787 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:18:47,787 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:18:47,787 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:18:47,787 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:18:47,788 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:18:47,788 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:18:47,788 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:18:47,788 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-10-26 22:18:47,788 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:18:47,788 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 22:18:47,788 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 22:18:47,789 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/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 [2018-10-26 22:18:47,839 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:18:47,857 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:18:47,862 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:18:47,864 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:18:47,864 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:18:47,865 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i [2018-10-26 22:18:47,920 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/uautomizer/data/484cf1001/478bb34d4caa40c480b9bbe8a7d99cda/FLAG803c470a5 [2018-10-26 22:18:48,311 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:18:48,312 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/sv-benchmarks/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i [2018-10-26 22:18:48,319 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/uautomizer/data/484cf1001/478bb34d4caa40c480b9bbe8a7d99cda/FLAG803c470a5 [2018-10-26 22:18:48,334 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/uautomizer/data/484cf1001/478bb34d4caa40c480b9bbe8a7d99cda [2018-10-26 22:18:48,339 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:18:48,340 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:18:48,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:18:48,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:18:48,346 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:18:48,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:18:48" (1/1) ... [2018-10-26 22:18:48,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28c73514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:48, skipping insertion in model container [2018-10-26 22:18:48,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:18:48" (1/1) ... [2018-10-26 22:18:48,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:18:48,385 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:18:48,588 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:18:48,595 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:18:48,620 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:18:48,638 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:18:48,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:48 WrapperNode [2018-10-26 22:18:48,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:18:48,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:18:48,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:18:48,640 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:18:48,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:48" (1/1) ... [2018-10-26 22:18:48,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:48" (1/1) ... [2018-10-26 22:18:48,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:48" (1/1) ... [2018-10-26 22:18:48,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:48" (1/1) ... [2018-10-26 22:18:48,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:48" (1/1) ... [2018-10-26 22:18:48,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:48" (1/1) ... [2018-10-26 22:18:48,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:48" (1/1) ... [2018-10-26 22:18:48,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:18:48,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:18:48,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:18:48,668 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:18:48,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/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 [2018-10-26 22:18:48,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 22:18:48,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:18:48,729 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 22:18:48,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 22:18:48,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-10-26 22:18:48,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-10-26 22:18:48,729 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 22:18:48,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 22:18:48,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:18:50,992 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:18:50,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:18:50 BoogieIcfgContainer [2018-10-26 22:18:50,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:18:50,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:18:50,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:18:50,998 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:18:50,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:18:48" (1/3) ... [2018-10-26 22:18:50,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d6d78d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:18:50, skipping insertion in model container [2018-10-26 22:18:50,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:48" (2/3) ... [2018-10-26 22:18:51,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d6d78d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:18:51, skipping insertion in model container [2018-10-26 22:18:51,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:18:50" (3/3) ... [2018-10-26 22:18:51,003 INFO L112 eAbstractionObserver]: Analyzing ICFG square_1_false-unreach-call_true-termination.i [2018-10-26 22:18:51,011 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:18:51,018 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:18:51,035 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:18:51,065 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:18:51,066 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:18:51,066 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:18:51,066 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:18:51,066 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:18:51,066 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:18:51,066 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:18:51,067 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:18:51,067 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:18:51,081 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-10-26 22:18:51,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-26 22:18:51,088 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:18:51,089 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:18:51,091 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:18:51,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:18:51,098 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-10-26 22:18:51,106 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 22:18:51,107 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/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 [2018-10-26 22:18:51,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:19:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:20:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:20:04,798 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 22:20:04,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:20:04 BoogieIcfgContainer [2018-10-26 22:20:04,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:20:04,824 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 22:20:04,824 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 22:20:04,825 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 22:20:04,825 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:18:50" (3/4) ... [2018-10-26 22:20:04,829 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-26 22:20:04,869 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_86559f4c-5071-4597-a49d-c6d72cc762ba/bin-2019/uautomizer/witness.graphml [2018-10-26 22:20:04,869 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 22:20:04,870 INFO L168 Benchmark]: Toolchain (without parser) took 76530.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -163.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:20:04,872 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:20:04,873 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.80 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 22:20:04,873 INFO L168 Benchmark]: Boogie Preprocessor took 28.13 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:20:04,874 INFO L168 Benchmark]: RCFGBuilder took 2325.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -194.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. [2018-10-26 22:20:04,875 INFO L168 Benchmark]: TraceAbstraction took 73829.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2018-10-26 22:20:04,877 INFO L168 Benchmark]: Witness Printer took 45.21 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. [2018-10-26 22:20:04,880 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 297.80 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.13 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 2325.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -194.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 73829.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Witness Printer took 45.21 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; VAL [IN=0.9999998807907104, result=1.3984375, x=0.9999998807907104] [L14] COND TRUE !(result >= 0.0f && result < 1.39f) VAL [IN=0.9999998807907104, result=1.3984375, x=0.9999998807907104] [L15] __VERIFIER_error() VAL [IN=0.9999998807907104, result=1.3984375, x=0.9999998807907104] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. UNSAFE Result, 73.7s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 36.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...