./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e2e86886-7a99-43d8-ab91-645855880a20/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e2e86886-7a99-43d8-ab91-645855880a20/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e2e86886-7a99-43d8-ab91-645855880a20/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e2e86886-7a99-43d8-ab91-645855880a20/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_e2e86886-7a99-43d8-ab91-645855880a20/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e2e86886-7a99-43d8-ab91-645855880a20/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 30af8e98893bfcc9c7b0879f6e0cde9a5cbf7714 ....................................................................................................................................................................................................................................... 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_e2e86886-7a99-43d8-ab91-645855880a20/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e2e86886-7a99-43d8-ab91-645855880a20/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e2e86886-7a99-43d8-ab91-645855880a20/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e2e86886-7a99-43d8-ab91-645855880a20/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_e2e86886-7a99-43d8-ab91-645855880a20/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e2e86886-7a99-43d8-ab91-645855880a20/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 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 0.1.23-5842f4b [2018-11-18 13:16:20,925 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:16:20,926 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:16:20,935 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:16:20,935 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:16:20,936 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:16:20,937 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:16:20,938 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:16:20,939 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:16:20,939 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:16:20,940 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:16:20,940 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:16:20,941 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:16:20,941 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:16:20,942 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:16:20,943 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:16:20,943 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:16:20,944 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:16:20,946 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:16:20,947 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:16:20,947 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:16:20,948 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:16:20,950 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:16:20,950 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:16:20,950 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:16:20,951 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:16:20,952 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:16:20,952 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:16:20,953 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:16:20,953 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:16:20,954 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:16:20,954 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:16:20,954 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:16:20,954 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:16:20,955 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:16:20,956 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:16:20,956 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e2e86886-7a99-43d8-ab91-645855880a20/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 13:16:20,966 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:16:20,966 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:16:20,967 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:16:20,967 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 13:16:20,967 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 13:16:20,967 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 13:16:20,967 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 13:16:20,968 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:16:20,968 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 13:16:20,968 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 13:16:20,968 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 13:16:20,968 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:16:20,968 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:16:20,968 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:16:20,969 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:16:20,969 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 13:16:20,969 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:16:20,969 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:16:20,969 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:16:20,969 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:16:20,969 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:16:20,970 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:16:20,970 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:16:20,970 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:16:20,970 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:16:20,970 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:16:20,970 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:16:20,970 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 13:16:20,971 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:16:20,971 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 13:16:20,971 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_e2e86886-7a99-43d8-ab91-645855880a20/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 -> 30af8e98893bfcc9c7b0879f6e0cde9a5cbf7714 [2018-11-18 13:16:20,994 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:16:21,004 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:16:21,007 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:16:21,008 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:16:21,008 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:16:21,008 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e2e86886-7a99-43d8-ab91-645855880a20/bin-2019/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i [2018-11-18 13:16:21,046 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e2e86886-7a99-43d8-ab91-645855880a20/bin-2019/uautomizer/data/6dfba0592/f319cc67be994f788662b8d9807d14ba/FLAG451e05f0c [2018-11-18 13:16:21,440 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:16:21,441 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e2e86886-7a99-43d8-ab91-645855880a20/sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i [2018-11-18 13:16:21,444 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e2e86886-7a99-43d8-ab91-645855880a20/bin-2019/uautomizer/data/6dfba0592/f319cc67be994f788662b8d9807d14ba/FLAG451e05f0c [2018-11-18 13:16:21,456 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e2e86886-7a99-43d8-ab91-645855880a20/bin-2019/uautomizer/data/6dfba0592/f319cc67be994f788662b8d9807d14ba [2018-11-18 13:16:21,458 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:16:21,458 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 13:16:21,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:16:21,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:16:21,461 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:16:21,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:16:21" (1/1) ... [2018-11-18 13:16:21,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cf76dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:21, skipping insertion in model container [2018-11-18 13:16:21,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:16:21" (1/1) ... [2018-11-18 13:16:21,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:16:21,486 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:16:21,597 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:16:21,599 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:16:21,609 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:16:21,617 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:16:21,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:21 WrapperNode [2018-11-18 13:16:21,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:16:21,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:16:21,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:16:21,618 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:16:21,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:21" (1/1) ... [2018-11-18 13:16:21,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:21" (1/1) ... [2018-11-18 13:16:21,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:21" (1/1) ... [2018-11-18 13:16:21,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:21" (1/1) ... [2018-11-18 13:16:21,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:21" (1/1) ... [2018-11-18 13:16:21,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:21" (1/1) ... [2018-11-18 13:16:21,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:21" (1/1) ... [2018-11-18 13:16:21,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:16:21,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:16:21,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:16:21,635 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:16:21,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e2e86886-7a99-43d8-ab91-645855880a20/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 [2018-11-18 13:16:21,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:16:21,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:16:21,709 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:16:21,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 13:16:21,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 13:16:21,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-11-18 13:16:21,710 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:16:21,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:16:21,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:16:21,780 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:16:21,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:16:21 BoogieIcfgContainer [2018-11-18 13:16:21,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:16:21,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:16:21,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:16:21,784 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:16:21,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:16:21" (1/3) ... [2018-11-18 13:16:21,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5ddc6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:16:21, skipping insertion in model container [2018-11-18 13:16:21,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:21" (2/3) ... [2018-11-18 13:16:21,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5ddc6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:16:21, skipping insertion in model container [2018-11-18 13:16:21,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:16:21" (3/3) ... [2018-11-18 13:16:21,787 INFO L112 eAbstractionObserver]: Analyzing ICFG square_2_false-unreach-call_true-termination.i [2018-11-18 13:16:21,793 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:16:21,797 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 13:16:21,805 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 13:16:21,823 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 13:16:21,823 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:16:21,823 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:16:21,823 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:16:21,824 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:16:21,824 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:16:21,824 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:16:21,824 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:16:21,824 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:16:21,834 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-11-18 13:16:21,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-18 13:16:21,838 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:16:21,839 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:16:21,841 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:16:21,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:16:21,846 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-11-18 13:16:21,848 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:16:21,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:16:21,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:16:21,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:16:21,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:16:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:16:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:16:21,921 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 13:16:21,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:16:21 BoogieIcfgContainer [2018-11-18 13:16:21,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 13:16:21,934 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 13:16:21,934 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 13:16:21,934 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 13:16:21,935 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:16:21" (3/4) ... [2018-11-18 13:16:21,937 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 13:16:21,937 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 13:16:21,937 INFO L168 Benchmark]: Toolchain (without parser) took 479.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 958.1 MB in the beginning and 1.1 GB in the end (delta: -141.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:16:21,939 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:16:21,939 INFO L168 Benchmark]: CACSL2BoogieTranslator took 159.24 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:16:21,939 INFO L168 Benchmark]: Boogie Preprocessor took 16.24 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:16:21,940 INFO L168 Benchmark]: RCFGBuilder took 146.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -169.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-11-18 13:16:21,940 INFO L168 Benchmark]: TraceAbstraction took 151.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 11.5 GB. [2018-11-18 13:16:21,941 INFO L168 Benchmark]: Witness Printer took 3.06 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. [2018-11-18 13:16:21,943 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 159.24 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.24 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 146.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -169.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 151.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.06 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 < 1.398f) 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 0.1.23-5842f4b [2018-11-18 13:16:23,334 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:16:23,335 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:16:23,343 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:16:23,343 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:16:23,343 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:16:23,344 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:16:23,345 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:16:23,346 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:16:23,347 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:16:23,348 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:16:23,348 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:16:23,349 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:16:23,349 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:16:23,350 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:16:23,351 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:16:23,351 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:16:23,352 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:16:23,354 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:16:23,355 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:16:23,356 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:16:23,356 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:16:23,358 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:16:23,358 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:16:23,358 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:16:23,359 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:16:23,360 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:16:23,360 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:16:23,361 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:16:23,361 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:16:23,361 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:16:23,362 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:16:23,362 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:16:23,362 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:16:23,363 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:16:23,363 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:16:23,364 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e2e86886-7a99-43d8-ab91-645855880a20/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-18 13:16:23,374 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:16:23,374 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:16:23,375 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:16:23,375 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 13:16:23,375 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 13:16:23,375 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 13:16:23,375 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 13:16:23,376 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:16:23,376 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 13:16:23,376 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 13:16:23,376 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:16:23,376 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:16:23,376 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:16:23,376 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:16:23,377 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 13:16:23,377 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 13:16:23,377 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 13:16:23,377 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:16:23,377 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:16:23,377 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:16:23,377 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:16:23,378 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:16:23,378 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:16:23,378 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:16:23,378 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:16:23,378 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:16:23,378 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:16:23,378 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:16:23,378 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-18 13:16:23,379 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:16:23,379 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 13:16:23,379 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 13:16:23,379 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_e2e86886-7a99-43d8-ab91-645855880a20/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 -> 30af8e98893bfcc9c7b0879f6e0cde9a5cbf7714 [2018-11-18 13:16:23,407 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:16:23,415 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:16:23,417 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:16:23,418 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:16:23,418 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:16:23,419 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e2e86886-7a99-43d8-ab91-645855880a20/bin-2019/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i [2018-11-18 13:16:23,453 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e2e86886-7a99-43d8-ab91-645855880a20/bin-2019/uautomizer/data/67bc75076/5ec3392c3a6e4cabb997cd1ae634c2e3/FLAGd42b6e968 [2018-11-18 13:16:23,848 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:16:23,848 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e2e86886-7a99-43d8-ab91-645855880a20/sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i [2018-11-18 13:16:23,852 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e2e86886-7a99-43d8-ab91-645855880a20/bin-2019/uautomizer/data/67bc75076/5ec3392c3a6e4cabb997cd1ae634c2e3/FLAGd42b6e968 [2018-11-18 13:16:23,861 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e2e86886-7a99-43d8-ab91-645855880a20/bin-2019/uautomizer/data/67bc75076/5ec3392c3a6e4cabb997cd1ae634c2e3 [2018-11-18 13:16:23,863 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:16:23,864 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 13:16:23,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:16:23,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:16:23,867 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:16:23,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:16:23" (1/1) ... [2018-11-18 13:16:23,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3327aaa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:23, skipping insertion in model container [2018-11-18 13:16:23,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:16:23" (1/1) ... [2018-11-18 13:16:23,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:16:23,887 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:16:23,994 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:16:23,999 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:16:24,010 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:16:24,019 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:16:24,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:24 WrapperNode [2018-11-18 13:16:24,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:16:24,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:16:24,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:16:24,020 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:16:24,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:24" (1/1) ... [2018-11-18 13:16:24,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:24" (1/1) ... [2018-11-18 13:16:24,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:24" (1/1) ... [2018-11-18 13:16:24,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:24" (1/1) ... [2018-11-18 13:16:24,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:24" (1/1) ... [2018-11-18 13:16:24,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:24" (1/1) ... [2018-11-18 13:16:24,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:24" (1/1) ... [2018-11-18 13:16:24,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:16:24,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:16:24,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:16:24,041 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:16:24,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e2e86886-7a99-43d8-ab91-645855880a20/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 [2018-11-18 13:16:24,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:16:24,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:16:24,074 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:16:24,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 13:16:24,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 13:16:24,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-11-18 13:16:24,074 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:16:24,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:16:24,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:16:26,259 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:16:26,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:16:26 BoogieIcfgContainer [2018-11-18 13:16:26,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:16:26,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:16:26,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:16:26,262 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:16:26,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:16:23" (1/3) ... [2018-11-18 13:16:26,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c30372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:16:26, skipping insertion in model container [2018-11-18 13:16:26,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:24" (2/3) ... [2018-11-18 13:16:26,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c30372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:16:26, skipping insertion in model container [2018-11-18 13:16:26,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:16:26" (3/3) ... [2018-11-18 13:16:26,264 INFO L112 eAbstractionObserver]: Analyzing ICFG square_2_false-unreach-call_true-termination.i [2018-11-18 13:16:26,271 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:16:26,276 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 13:16:26,285 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 13:16:26,303 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 13:16:26,303 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:16:26,303 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:16:26,304 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:16:26,304 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:16:26,304 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:16:26,304 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:16:26,304 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:16:26,304 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:16:26,316 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-11-18 13:16:26,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-18 13:16:26,320 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:16:26,320 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:16:26,322 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:16:26,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:16:26,325 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-11-18 13:16:26,328 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:16:26,329 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e2e86886-7a99-43d8-ab91-645855880a20/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 [2018-11-18 13:16:26,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:16:56,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:17:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:17:37,760 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 13:17:37,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:17:37 BoogieIcfgContainer [2018-11-18 13:17:37,777 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 13:17:37,777 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 13:17:37,777 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 13:17:37,778 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 13:17:37,778 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:16:26" (3/4) ... [2018-11-18 13:17:37,780 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 13:17:37,804 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e2e86886-7a99-43d8-ab91-645855880a20/bin-2019/uautomizer/witness.graphml [2018-11-18 13:17:37,804 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 13:17:37,805 INFO L168 Benchmark]: Toolchain (without parser) took 73941.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 949.7 MB in the beginning and 1.1 GB in the end (delta: -153.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:17:37,806 INFO L168 Benchmark]: CDTParser took 0.12 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. [2018-11-18 13:17:37,806 INFO L168 Benchmark]: CACSL2BoogieTranslator took 155.48 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:17:37,806 INFO L168 Benchmark]: Boogie Preprocessor took 20.76 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 13:17:37,807 INFO L168 Benchmark]: RCFGBuilder took 2217.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -187.9 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2018-11-18 13:17:37,807 INFO L168 Benchmark]: TraceAbstraction took 71517.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2018-11-18 13:17:37,808 INFO L168 Benchmark]: Witness Printer took 26.92 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. [2018-11-18 13:17:37,810 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 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 155.48 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.76 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2217.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -187.9 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 71517.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Witness Printer took 26.92 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 < 1.398f) 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, 71.4s 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, 30.1s 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...