./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e 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 /storage/repos/svcomp/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c -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 3a552ed0b53624bc27612451ed4207d0101db39b ................................................................................................................................................................................................................................... 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 /storage/repos/svcomp/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c -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 3a552ed0b53624bc27612451ed4207d0101db39b ...................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 17:40:14,128 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 17:40:14,130 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 17:40:14,143 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 17:40:14,143 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 17:40:14,145 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 17:40:14,146 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 17:40:14,151 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 17:40:14,153 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 17:40:14,155 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 17:40:14,156 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 17:40:14,156 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 17:40:14,159 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 17:40:14,163 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 17:40:14,168 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 17:40:14,169 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 17:40:14,170 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 17:40:14,174 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 17:40:14,180 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 17:40:14,184 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 17:40:14,191 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 17:40:14,192 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 17:40:14,198 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 17:40:14,201 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 17:40:14,201 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 17:40:14,202 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 17:40:14,206 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 17:40:14,207 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 17:40:14,208 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 17:40:14,213 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 17:40:14,213 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 17:40:14,214 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 17:40:14,214 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 17:40:14,214 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 17:40:14,217 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 17:40:14,218 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 17:40:14,220 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 17:40:14,248 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 17:40:14,250 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 17:40:14,251 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 17:40:14,251 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 17:40:14,251 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 17:40:14,252 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 17:40:14,252 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 17:40:14,252 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 17:40:14,252 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 17:40:14,252 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 17:40:14,255 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 17:40:14,255 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 17:40:14,255 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 17:40:14,255 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 17:40:14,256 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 17:40:14,256 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 17:40:14,256 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 17:40:14,256 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 17:40:14,257 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 17:40:14,257 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 17:40:14,257 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 17:40:14,257 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 17:40:14,257 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 17:40:14,257 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 17:40:14,260 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 17:40:14,260 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 17:40:14,261 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 17:40:14,261 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 17:40:14,261 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 17:40:14,262 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 17:40:14,262 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 -> 3a552ed0b53624bc27612451ed4207d0101db39b [2018-11-28 17:40:14,320 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 17:40:14,334 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 17:40:14,338 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 17:40:14,340 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 17:40:14,341 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 17:40:14,341 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-11-28 17:40:14,405 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ccc87526/0786687f0d164f059c4a6509cf8c918a/FLAGe624e2136 [2018-11-28 17:40:14,903 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 17:40:14,904 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-11-28 17:40:14,910 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ccc87526/0786687f0d164f059c4a6509cf8c918a/FLAGe624e2136 [2018-11-28 17:40:15,265 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ccc87526/0786687f0d164f059c4a6509cf8c918a [2018-11-28 17:40:15,268 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 17:40:15,270 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 17:40:15,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 17:40:15,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 17:40:15,275 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 17:40:15,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:40:15" (1/1) ... [2018-11-28 17:40:15,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ebc4df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:15, skipping insertion in model container [2018-11-28 17:40:15,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:40:15" (1/1) ... [2018-11-28 17:40:15,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 17:40:15,305 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 17:40:15,549 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:40:15,556 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 17:40:15,578 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:40:15,598 INFO L195 MainTranslator]: Completed translation [2018-11-28 17:40:15,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:15 WrapperNode [2018-11-28 17:40:15,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 17:40:15,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 17:40:15,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 17:40:15,600 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 17:40:15,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:15" (1/1) ... [2018-11-28 17:40:15,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:15" (1/1) ... [2018-11-28 17:40:15,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 17:40:15,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 17:40:15,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 17:40:15,628 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 17:40:15,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:15" (1/1) ... [2018-11-28 17:40:15,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:15" (1/1) ... [2018-11-28 17:40:15,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:15" (1/1) ... [2018-11-28 17:40:15,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:15" (1/1) ... [2018-11-28 17:40:15,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:15" (1/1) ... [2018-11-28 17:40:15,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:15" (1/1) ... [2018-11-28 17:40:15,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:15" (1/1) ... [2018-11-28 17:40:15,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 17:40:15,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 17:40:15,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 17:40:15,662 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 17:40:15,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:15" (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 [2018-11-28 17:40:15,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 17:40:15,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 17:40:15,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 17:40:15,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 17:40:15,830 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 17:40:15,830 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 17:40:15,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 17:40:15,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 17:40:16,039 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 17:40:16,039 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 17:40:16,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:40:16 BoogieIcfgContainer [2018-11-28 17:40:16,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 17:40:16,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 17:40:16,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 17:40:16,044 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 17:40:16,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:40:15" (1/3) ... [2018-11-28 17:40:16,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bda1eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:40:16, skipping insertion in model container [2018-11-28 17:40:16,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:15" (2/3) ... [2018-11-28 17:40:16,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bda1eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:40:16, skipping insertion in model container [2018-11-28 17:40:16,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:40:16" (3/3) ... [2018-11-28 17:40:16,047 INFO L112 eAbstractionObserver]: Analyzing ICFG float_int_inv_square_false-unreach-call_true-termination.c [2018-11-28 17:40:16,058 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 17:40:16,066 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 17:40:16,081 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 17:40:16,113 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 17:40:16,114 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 17:40:16,114 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 17:40:16,114 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 17:40:16,114 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 17:40:16,114 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 17:40:16,115 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 17:40:16,115 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 17:40:16,115 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 17:40:16,134 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-28 17:40:16,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 17:40:16,142 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:40:16,146 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:40:16,151 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:40:16,158 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:40:16,158 INFO L82 PathProgramCache]: Analyzing trace with hash 997393992, now seen corresponding path program 1 times [2018-11-28 17:40:16,160 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 17:40:16,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 17:40:16,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:40:16,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:40:16,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:40:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 17:40:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 17:40:16,290 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 17:40:16,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:40:16 BoogieIcfgContainer [2018-11-28 17:40:16,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 17:40:16,318 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 17:40:16,318 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 17:40:16,318 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 17:40:16,319 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:40:16" (3/4) ... [2018-11-28 17:40:16,323 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 17:40:16,323 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 17:40:16,324 INFO L168 Benchmark]: Toolchain (without parser) took 1055.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -164.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:40:16,326 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:40:16,328 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.27 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 931.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 17:40:16,333 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.25 ms. Allocated memory is still 1.0 GB. Free memory is still 931.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:40:16,334 INFO L168 Benchmark]: Boogie Preprocessor took 33.34 ms. Allocated memory is still 1.0 GB. Free memory is still 931.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:40:16,334 INFO L168 Benchmark]: RCFGBuilder took 377.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -182.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2018-11-28 17:40:16,336 INFO L168 Benchmark]: TraceAbstraction took 276.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-11-28 17:40:16,339 INFO L168 Benchmark]: Witness Printer took 5.52 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. [2018-11-28 17:40:16,347 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 328.27 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 931.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.25 ms. Allocated memory is still 1.0 GB. Free memory is still 931.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.34 ms. Allocated memory is still 1.0 GB. Free memory is still 931.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 377.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -182.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 276.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Witness Printer took 5.52 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: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 16. Possible FailurePath: [L10] int x; [L11] float y, z; [L13] x = __VERIFIER_nondet_int() [L16] y = x*x - 4.f VAL [x=0] [L17] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. UNSAFE Result, 0.2s 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=17occurred 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, 9 NumberOfCodeBlocks, 9 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 0.1.24-91b1670 [2018-11-28 17:40:18,712 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 17:40:18,713 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 17:40:18,726 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 17:40:18,727 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 17:40:18,728 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 17:40:18,730 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 17:40:18,732 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 17:40:18,734 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 17:40:18,735 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 17:40:18,736 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 17:40:18,737 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 17:40:18,738 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 17:40:18,739 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 17:40:18,741 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 17:40:18,742 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 17:40:18,743 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 17:40:18,745 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 17:40:18,748 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 17:40:18,749 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 17:40:18,751 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 17:40:18,752 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 17:40:18,755 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 17:40:18,756 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 17:40:18,756 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 17:40:18,757 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 17:40:18,759 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 17:40:18,760 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 17:40:18,761 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 17:40:18,763 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 17:40:18,763 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 17:40:18,764 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 17:40:18,764 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 17:40:18,764 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 17:40:18,766 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 17:40:18,767 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 17:40:18,767 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 17:40:18,791 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 17:40:18,791 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 17:40:18,792 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 17:40:18,792 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 17:40:18,796 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 17:40:18,796 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 17:40:18,797 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 17:40:18,797 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 17:40:18,797 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 17:40:18,797 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 17:40:18,802 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 17:40:18,802 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 17:40:18,802 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 17:40:18,802 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 17:40:18,802 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 17:40:18,803 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 17:40:18,803 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 17:40:18,803 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 17:40:18,803 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 17:40:18,803 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 17:40:18,804 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 17:40:18,804 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 17:40:18,804 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 17:40:18,804 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 17:40:18,804 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 17:40:18,809 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 17:40:18,810 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 17:40:18,810 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 17:40:18,810 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 17:40:18,810 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 17:40:18,810 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 17:40:18,811 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 17:40:18,811 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 -> 3a552ed0b53624bc27612451ed4207d0101db39b [2018-11-28 17:40:18,856 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 17:40:18,880 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 17:40:18,886 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 17:40:18,888 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 17:40:18,888 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 17:40:18,889 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-11-28 17:40:18,956 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c37a9317/d5add937c1fb4922a5d98736e499541f/FLAG4251b468c [2018-11-28 17:40:19,365 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 17:40:19,366 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-11-28 17:40:19,371 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c37a9317/d5add937c1fb4922a5d98736e499541f/FLAG4251b468c [2018-11-28 17:40:19,738 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c37a9317/d5add937c1fb4922a5d98736e499541f [2018-11-28 17:40:19,741 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 17:40:19,743 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 17:40:19,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 17:40:19,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 17:40:19,749 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 17:40:19,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:40:19" (1/1) ... [2018-11-28 17:40:19,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50f6d98e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:19, skipping insertion in model container [2018-11-28 17:40:19,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:40:19" (1/1) ... [2018-11-28 17:40:19,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 17:40:19,785 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 17:40:19,979 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:40:19,987 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 17:40:20,005 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:40:20,023 INFO L195 MainTranslator]: Completed translation [2018-11-28 17:40:20,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:20 WrapperNode [2018-11-28 17:40:20,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 17:40:20,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 17:40:20,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 17:40:20,025 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 17:40:20,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:20" (1/1) ... [2018-11-28 17:40:20,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:20" (1/1) ... [2018-11-28 17:40:20,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 17:40:20,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 17:40:20,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 17:40:20,055 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 17:40:20,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:20" (1/1) ... [2018-11-28 17:40:20,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:20" (1/1) ... [2018-11-28 17:40:20,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:20" (1/1) ... [2018-11-28 17:40:20,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:20" (1/1) ... [2018-11-28 17:40:20,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:20" (1/1) ... [2018-11-28 17:40:20,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:20" (1/1) ... [2018-11-28 17:40:20,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:20" (1/1) ... [2018-11-28 17:40:20,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 17:40:20,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 17:40:20,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 17:40:20,099 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 17:40:20,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:20" (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 [2018-11-28 17:40:20,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 17:40:20,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 17:40:20,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 17:40:20,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 17:40:20,230 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 17:40:20,231 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 17:40:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 17:40:20,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 17:40:21,319 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 17:40:21,320 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 17:40:21,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:40:21 BoogieIcfgContainer [2018-11-28 17:40:21,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 17:40:21,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 17:40:21,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 17:40:21,325 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 17:40:21,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:40:19" (1/3) ... [2018-11-28 17:40:21,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1628087e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:40:21, skipping insertion in model container [2018-11-28 17:40:21,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:20" (2/3) ... [2018-11-28 17:40:21,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1628087e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:40:21, skipping insertion in model container [2018-11-28 17:40:21,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:40:21" (3/3) ... [2018-11-28 17:40:21,329 INFO L112 eAbstractionObserver]: Analyzing ICFG float_int_inv_square_false-unreach-call_true-termination.c [2018-11-28 17:40:21,338 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 17:40:21,345 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 17:40:21,361 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 17:40:21,392 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 17:40:21,393 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 17:40:21,393 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 17:40:21,394 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 17:40:21,394 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 17:40:21,394 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 17:40:21,394 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 17:40:21,395 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 17:40:21,395 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 17:40:21,415 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-28 17:40:21,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 17:40:21,421 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:40:21,423 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:40:21,425 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:40:21,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:40:21,431 INFO L82 PathProgramCache]: Analyzing trace with hash 997393992, now seen corresponding path program 1 times [2018-11-28 17:40:21,436 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:40:21,437 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) [2018-11-28 17:40:21,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-28 17:40:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 17:40:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 17:40:21,701 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 17:40:21,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:40:21 BoogieIcfgContainer [2018-11-28 17:40:21,735 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 17:40:21,736 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 17:40:21,736 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 17:40:21,736 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 17:40:21,737 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:40:21" (3/4) ... [2018-11-28 17:40:21,740 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 17:40:21,783 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 17:40:21,783 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 17:40:21,784 INFO L168 Benchmark]: Toolchain (without parser) took 2042.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -145.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:40:21,786 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:40:21,787 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.93 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 17:40:21,788 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.86 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:40:21,788 INFO L168 Benchmark]: Boogie Preprocessor took 43.50 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:40:21,790 INFO L168 Benchmark]: RCFGBuilder took 1222.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -174.7 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2018-11-28 17:40:21,791 INFO L168 Benchmark]: TraceAbstraction took 413.78 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: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 11.5 GB. [2018-11-28 17:40:21,792 INFO L168 Benchmark]: Witness Printer took 47.47 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. [2018-11-28 17:40:21,797 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 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 279.93 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.86 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 43.50 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1222.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -174.7 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 413.78 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: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 11.5 GB. * Witness Printer took 47.47 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: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int x; [L11] float y, z; [L13] x = __VERIFIER_nondet_int() [L16] y = x*x - 4.f VAL [x=2, y=0.0] [L17] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. UNSAFE Result, 0.3s 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=17occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 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...