/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/floats-cdfpl/square_2_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 40ef5092 Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/floats-cdfpl/square_2_false-unreach-call_true-termination.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/floats-cdfpl/square_2_false-unreach-call_true-termination.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0.1.23-40ef509 [2018-09-20 13:26:07,883 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 13:26:07,885 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 13:26:07,901 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 13:26:07,902 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 13:26:07,905 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 13:26:07,907 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 13:26:07,909 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 13:26:07,912 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 13:26:07,914 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 13:26:07,916 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 13:26:07,918 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 13:26:07,919 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 13:26:07,922 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 13:26:07,928 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 13:26:07,931 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 13:26:07,932 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 13:26:07,933 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 13:26:07,938 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 13:26:07,941 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 13:26:07,944 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 13:26:07,946 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 13:26:07,953 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 13:26:07,955 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 13:26:07,955 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 13:26:07,957 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 13:26:07,958 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 13:26:07,958 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 13:26:07,960 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 13:26:07,964 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 13:26:07,964 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 13:26:07,965 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 13:26:07,965 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 13:26:07,965 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 13:26:07,966 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 13:26:07,971 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 13:26:07,973 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-20 13:26:08,002 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 13:26:08,003 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 13:26:08,004 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 13:26:08,004 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 13:26:08,005 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 13:26:08,005 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 13:26:08,005 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 13:26:08,005 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 13:26:08,007 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 13:26:08,007 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-20 13:26:08,007 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 13:26:08,008 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 13:26:08,008 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 13:26:08,008 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 13:26:08,008 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 13:26:08,008 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 13:26:08,010 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 13:26:08,010 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 13:26:08,011 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 13:26:08,011 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 13:26:08,011 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 13:26:08,012 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 13:26:08,012 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 13:26:08,012 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 13:26:08,012 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 13:26:08,012 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 13:26:08,012 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-20 13:26:08,013 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 13:26:08,013 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-20 13:26:08,013 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 [2018-09-20 13:26:08,105 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 13:26:08,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 13:26:08,122 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 13:26:08,124 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 13:26:08,124 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 13:26:08,125 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cdfpl/square_2_false-unreach-call_true-termination.i [2018-09-20 13:26:08,489 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3ec71c0b/c37aee76f7d345db82ae8ccab742e66a/FLAGc5d1c0605 [2018-09-20 13:26:08,665 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 13:26:08,666 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/square_2_false-unreach-call_true-termination.i [2018-09-20 13:26:08,675 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3ec71c0b/c37aee76f7d345db82ae8ccab742e66a/FLAGc5d1c0605 [2018-09-20 13:26:08,704 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3ec71c0b/c37aee76f7d345db82ae8ccab742e66a [2018-09-20 13:26:08,709 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 13:26:08,712 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 13:26:08,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 13:26:08,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 13:26:08,725 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 13:26:08,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:26:08" (1/1) ... [2018-09-20 13:26:08,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64ff6337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:08, skipping insertion in model container [2018-09-20 13:26:08,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:26:08" (1/1) ... [2018-09-20 13:26:08,745 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 13:26:08,995 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:26:09,014 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 13:26:09,019 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:26:09,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:09 WrapperNode [2018-09-20 13:26:09,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 13:26:09,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 13:26:09,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 13:26:09,035 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 13:26:09,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:09" (1/1) ... [2018-09-20 13:26:09,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:09" (1/1) ... [2018-09-20 13:26:09,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:09" (1/1) ... [2018-09-20 13:26:09,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:09" (1/1) ... [2018-09-20 13:26:09,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:09" (1/1) ... [2018-09-20 13:26:09,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:09" (1/1) ... [2018-09-20 13:26:09,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:09" (1/1) ... [2018-09-20 13:26:09,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 13:26:09,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 13:26:09,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 13:26:09,066 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 13:26:09,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-09-20 13:26:09,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 13:26:09,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 13:26:09,148 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 13:26:09,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 13:26:09,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-09-20 13:26:09,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-20 13:26:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 13:26:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 13:26:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 13:26:09,512 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 13:26:09,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:26:09 BoogieIcfgContainer [2018-09-20 13:26:09,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 13:26:09,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 13:26:09,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 13:26:09,518 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 13:26:09,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:26:08" (1/3) ... [2018-09-20 13:26:09,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dbe2897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:26:09, skipping insertion in model container [2018-09-20 13:26:09,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:09" (2/3) ... [2018-09-20 13:26:09,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dbe2897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:26:09, skipping insertion in model container [2018-09-20 13:26:09,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:26:09" (3/3) ... [2018-09-20 13:26:09,522 INFO L112 eAbstractionObserver]: Analyzing ICFG square_2_false-unreach-call_true-termination.i [2018-09-20 13:26:09,532 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 13:26:09,540 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 13:26:09,590 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 13:26:09,590 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 13:26:09,591 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 13:26:09,591 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 13:26:09,591 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 13:26:09,591 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 13:26:09,591 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 13:26:09,591 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 13:26:09,591 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 13:26:09,608 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-09-20 13:26:09,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-20 13:26:09,613 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 13:26:09,614 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-09-20 13:26:09,617 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 13:26:09,622 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-09-20 13:26:09,624 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 13:26:09,624 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 13:26:09,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 13:26:09,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 13:26:09,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 13:26:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 13:26:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 13:26:09,731 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 13:26:09,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:26:09 BoogieIcfgContainer [2018-09-20 13:26:09,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 13:26:09,752 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 13:26:09,752 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 13:26:09,752 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 13:26:09,753 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:26:09" (3/4) ... [2018-09-20 13:26:09,756 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-20 13:26:09,756 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 13:26:09,757 INFO L168 Benchmark]: Toolchain (without parser) took 1047.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 951.8 MB in the beginning and 1.1 GB in the end (delta: -148.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:26:09,760 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. [2018-09-20 13:26:09,760 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.66 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 13:26:09,762 INFO L168 Benchmark]: Boogie Preprocessor took 31.13 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:26:09,762 INFO L168 Benchmark]: RCFGBuilder took 447.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -175.9 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2018-09-20 13:26:09,763 INFO L168 Benchmark]: TraceAbstraction took 237.06 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: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 11.5 GB. [2018-09-20 13:26:09,764 INFO L168 Benchmark]: Witness Printer took 4.94 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. [2018-09-20 13:26:09,773 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 318.66 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.13 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 447.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -175.9 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 237.06 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: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 11.5 GB. * Witness Printer took 4.94 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 0.1.23-40ef509 [2018-09-20 13:26:12,107 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 13:26:12,110 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 13:26:12,126 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 13:26:12,126 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 13:26:12,128 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 13:26:12,129 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 13:26:12,131 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 13:26:12,133 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 13:26:12,134 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 13:26:12,135 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 13:26:12,135 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 13:26:12,137 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 13:26:12,138 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 13:26:12,139 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 13:26:12,140 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 13:26:12,141 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 13:26:12,143 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 13:26:12,145 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 13:26:12,147 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 13:26:12,149 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 13:26:12,150 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 13:26:12,153 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 13:26:12,153 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 13:26:12,153 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 13:26:12,154 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 13:26:12,156 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 13:26:12,157 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 13:26:12,158 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 13:26:12,159 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 13:26:12,159 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 13:26:12,160 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 13:26:12,161 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 13:26:12,161 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 13:26:12,162 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 13:26:12,163 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 13:26:12,163 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-20 13:26:12,186 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 13:26:12,186 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 13:26:12,187 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 13:26:12,187 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 13:26:12,188 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 13:26:12,188 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 13:26:12,188 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 13:26:12,189 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 13:26:12,189 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 13:26:12,189 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 13:26:12,189 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 13:26:12,189 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 13:26:12,189 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 13:26:12,190 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 13:26:12,190 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-20 13:26:12,190 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-20 13:26:12,190 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 13:26:12,190 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 13:26:12,191 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 13:26:12,191 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 13:26:12,191 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 13:26:12,191 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 13:26:12,191 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 13:26:12,192 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 13:26:12,192 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 13:26:12,192 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 13:26:12,192 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 13:26:12,192 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-20 13:26:12,192 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 13:26:12,193 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-20 13:26:12,193 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-20 13:26:12,193 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 [2018-09-20 13:26:12,255 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 13:26:12,274 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 13:26:12,280 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 13:26:12,281 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 13:26:12,282 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 13:26:12,283 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cdfpl/square_2_false-unreach-call_true-termination.i [2018-09-20 13:26:12,647 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67bb43755/f6a4e8d88a9e48cb9b8e8cc5f9220b4b/FLAG2e0221d0e [2018-09-20 13:26:12,768 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 13:26:12,768 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/square_2_false-unreach-call_true-termination.i [2018-09-20 13:26:12,773 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67bb43755/f6a4e8d88a9e48cb9b8e8cc5f9220b4b/FLAG2e0221d0e [2018-09-20 13:26:12,789 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67bb43755/f6a4e8d88a9e48cb9b8e8cc5f9220b4b [2018-09-20 13:26:12,793 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 13:26:12,795 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 13:26:12,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 13:26:12,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 13:26:12,804 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 13:26:12,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:26:12" (1/1) ... [2018-09-20 13:26:12,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62fd67ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:12, skipping insertion in model container [2018-09-20 13:26:12,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:26:12" (1/1) ... [2018-09-20 13:26:12,823 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 13:26:13,086 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:26:13,114 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 13:26:13,126 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:26:13,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:13 WrapperNode [2018-09-20 13:26:13,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 13:26:13,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 13:26:13,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 13:26:13,156 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 13:26:13,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:13" (1/1) ... [2018-09-20 13:26:13,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:13" (1/1) ... [2018-09-20 13:26:13,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:13" (1/1) ... [2018-09-20 13:26:13,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:13" (1/1) ... [2018-09-20 13:26:13,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:13" (1/1) ... [2018-09-20 13:26:13,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:13" (1/1) ... [2018-09-20 13:26:13,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:13" (1/1) ... [2018-09-20 13:26:13,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 13:26:13,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 13:26:13,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 13:26:13,201 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 13:26:13,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-09-20 13:26:13,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 13:26:13,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 13:26:13,280 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 13:26:13,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 13:26:13,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-09-20 13:26:13,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-20 13:26:13,280 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 13:26:13,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 13:26:13,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 13:26:15,631 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 13:26:15,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:26:15 BoogieIcfgContainer [2018-09-20 13:26:15,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 13:26:15,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 13:26:15,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 13:26:15,638 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 13:26:15,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:26:12" (1/3) ... [2018-09-20 13:26:15,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c47e293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:26:15, skipping insertion in model container [2018-09-20 13:26:15,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:13" (2/3) ... [2018-09-20 13:26:15,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c47e293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:26:15, skipping insertion in model container [2018-09-20 13:26:15,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:26:15" (3/3) ... [2018-09-20 13:26:15,642 INFO L112 eAbstractionObserver]: Analyzing ICFG square_2_false-unreach-call_true-termination.i [2018-09-20 13:26:15,653 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 13:26:15,661 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 13:26:15,718 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 13:26:15,719 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 13:26:15,720 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 13:26:15,720 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 13:26:15,720 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 13:26:15,720 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 13:26:15,721 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 13:26:15,721 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 13:26:15,721 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 13:26:15,742 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-09-20 13:26:15,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-20 13:26:15,748 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 13:26:15,750 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-09-20 13:26:15,752 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 13:26:15,759 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-09-20 13:26:15,764 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 13:26:15,765 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-20 13:26:15,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-20 13:26:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 13:26:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 13:26:59,095 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 13:26:59,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:26:59 BoogieIcfgContainer [2018-09-20 13:26:59,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 13:26:59,125 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 13:26:59,125 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 13:26:59,125 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 13:26:59,126 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:26:15" (3/4) ... [2018-09-20 13:26:59,130 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-09-20 13:26:59,179 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-20 13:26:59,180 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 13:26:59,181 INFO L168 Benchmark]: Toolchain (without parser) took 46387.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -154.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:26:59,183 INFO L168 Benchmark]: CDTParser took 0.51 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. [2018-09-20 13:26:59,184 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.97 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 13:26:59,185 INFO L168 Benchmark]: Boogie Preprocessor took 45.36 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:26:59,186 INFO L168 Benchmark]: RCFGBuilder took 2431.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -185.8 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2018-09-20 13:26:59,187 INFO L168 Benchmark]: TraceAbstraction took 43490.39 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. [2018-09-20 13:26:59,188 INFO L168 Benchmark]: Witness Printer took 54.76 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. [2018-09-20 13:26:59,192 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 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 357.97 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.36 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 2431.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -185.8 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 43490.39 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 54.76 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=0.9997557401657104, result=1.3983688354492188, x=0.9997557401657104] [L14] COND TRUE !(result >= 0.0f && result < 1.398f) VAL [IN=0.9997557401657104, result=1.3983688354492188, x=0.9997557401657104] [L15] __VERIFIER_error() VAL [IN=0.9997557401657104, result=1.3983688354492188, x=0.9997557401657104] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. UNSAFE Result, 43.4s 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, 14.2s 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...