./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/float_int_inv_square.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/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 ../sv-benchmarks/c/float-benchs/float_int_inv_square.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: /usr/bin/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 ../sv-benchmarks/c/float-benchs/float_int_inv_square.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 0.1.25-f470102 [2019-11-28 16:40:32,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:40:32,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:40:32,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:40:32,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:40:32,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:40:32,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:40:32,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:40:32,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:40:32,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:40:32,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:40:32,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:40:32,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:40:32,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:40:32,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:40:32,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:40:32,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:40:32,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:40:32,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:40:32,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:40:32,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:40:32,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:40:32,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:40:32,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:40:32,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:40:32,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:40:32,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:40:32,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:40:32,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:40:32,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:40:32,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:40:32,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:40:32,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:40:32,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:40:32,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:40:32,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:40:32,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:40:32,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:40:32,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:40:32,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:40:32,801 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:40:32,802 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:40:32,816 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:40:32,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:40:32,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:40:32,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:40:32,819 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:40:32,819 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:40:32,820 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:40:32,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:40:32,820 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:40:32,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:40:32,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:40:32,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:40:32,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:40:32,821 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:40:32,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:40:32,822 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:40:32,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:40:32,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:40:32,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:40:32,823 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:40:32,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:40:32,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:40:32,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:40:32,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:40:32,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:40:32,825 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:40:32,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:40:32,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:40:32,826 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:40:32,826 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /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 [2019-11-28 16:40:33,208 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:40:33,231 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:40:33,235 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:40:33,237 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:40:33,239 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:40:33,240 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-11-28 16:40:33,305 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14bedf66c/1d4f9dad7cd54d2099e03d55ed6d198a/FLAG823a17d30 [2019-11-28 16:40:33,749 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:40:33,750 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-11-28 16:40:33,755 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14bedf66c/1d4f9dad7cd54d2099e03d55ed6d198a/FLAG823a17d30 [2019-11-28 16:40:34,142 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14bedf66c/1d4f9dad7cd54d2099e03d55ed6d198a [2019-11-28 16:40:34,145 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:40:34,147 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:40:34,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:40:34,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:40:34,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:40:34,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:40:34" (1/1) ... [2019-11-28 16:40:34,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e0a05f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:34, skipping insertion in model container [2019-11-28 16:40:34,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:40:34" (1/1) ... [2019-11-28 16:40:34,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:40:34,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:40:34,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:40:34,371 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:40:34,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:40:34,410 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:40:34,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:34 WrapperNode [2019-11-28 16:40:34,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:40:34,412 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:40:34,412 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:40:34,412 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:40:34,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:34" (1/1) ... [2019-11-28 16:40:34,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:34" (1/1) ... [2019-11-28 16:40:34,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:40:34,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:40:34,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:40:34,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:40:34,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:34" (1/1) ... [2019-11-28 16:40:34,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:34" (1/1) ... [2019-11-28 16:40:34,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:34" (1/1) ... [2019-11-28 16:40:34,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:34" (1/1) ... [2019-11-28 16:40:34,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:34" (1/1) ... [2019-11-28 16:40:34,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:34" (1/1) ... [2019-11-28 16:40:34,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:34" (1/1) ... [2019-11-28 16:40:34,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:40:34,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:40:34,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:40:34,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:40:34,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:34" (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 [2019-11-28 16:40:34,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:40:34,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:40:34,715 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:40:34,715 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 16:40:34,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:40:34 BoogieIcfgContainer [2019-11-28 16:40:34,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:40:34,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:40:34,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:40:34,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:40:34,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:40:34" (1/3) ... [2019-11-28 16:40:34,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21fccd9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:40:34, skipping insertion in model container [2019-11-28 16:40:34,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:34" (2/3) ... [2019-11-28 16:40:34,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21fccd9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:40:34, skipping insertion in model container [2019-11-28 16:40:34,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:40:34" (3/3) ... [2019-11-28 16:40:34,725 INFO L109 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2019-11-28 16:40:34,735 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:40:34,742 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:40:34,752 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:40:34,774 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:40:34,775 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:40:34,775 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:40:34,775 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:40:34,775 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:40:34,776 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:40:34,776 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:40:34,776 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:40:34,791 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-28 16:40:34,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-28 16:40:34,798 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:40:34,799 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-28 16:40:34,799 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:40:34,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:40:34,805 INFO L82 PathProgramCache]: Analyzing trace with hash 30882, now seen corresponding path program 1 times [2019-11-28 16:40:34,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:40:34,813 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000674538] [2019-11-28 16:40:34,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:40:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:40:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:40:34,935 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:40:34,935 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:40:34,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:40:34 BoogieIcfgContainer [2019-11-28 16:40:34,958 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:40:34,959 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:40:34,959 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:40:34,959 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:40:34,960 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:40:34" (3/4) ... [2019-11-28 16:40:34,965 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:40:34,965 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:40:34,971 INFO L168 Benchmark]: Toolchain (without parser) took 820.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -141.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:40:34,971 INFO L168 Benchmark]: CDTParser took 1.07 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:40:34,972 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.36 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:40:34,974 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -189.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:40:34,974 INFO L168 Benchmark]: Boogie Preprocessor took 15.88 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. [2019-11-28 16:40:34,975 INFO L168 Benchmark]: RCFGBuilder took 194.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:40:34,976 INFO L168 Benchmark]: TraceAbstraction took 240.16 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: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2019-11-28 16:40:34,977 INFO L168 Benchmark]: Witness Printer took 6.81 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. [2019-11-28 16:40:34,990 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.07 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 263.36 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 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 94.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -189.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.88 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. * RCFGBuilder took 194.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 240.16 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: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * Witness Printer took 6.81 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 [L6] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-11-28 16:40:37,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:40:37,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:40:37,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:40:37,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:40:37,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:40:37,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:40:37,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:40:37,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:40:37,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:40:37,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:40:37,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:40:37,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:40:37,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:40:37,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:40:37,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:40:37,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:40:37,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:40:37,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:40:37,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:40:37,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:40:37,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:40:37,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:40:37,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:40:37,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:40:37,079 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:40:37,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:40:37,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:40:37,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:40:37,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:40:37,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:40:37,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:40:37,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:40:37,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:40:37,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:40:37,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:40:37,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:40:37,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:40:37,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:40:37,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:40:37,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:40:37,099 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 16:40:37,122 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:40:37,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:40:37,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:40:37,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:40:37,126 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:40:37,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:40:37,126 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:40:37,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:40:37,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:40:37,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:40:37,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:40:37,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:40:37,129 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 16:40:37,129 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 16:40:37,130 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:40:37,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:40:37,130 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:40:37,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:40:37,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:40:37,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:40:37,131 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:40:37,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:40:37,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:40:37,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:40:37,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:40:37,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:40:37,133 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 16:40:37,133 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 16:40:37,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:40:37,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:40:37,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 16:40:37,134 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /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 [2019-11-28 16:40:37,434 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:40:37,447 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:40:37,450 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:40:37,452 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:40:37,453 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:40:37,454 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-11-28 16:40:37,517 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/024120216/63a8063d7d9940aaa674065f24746ad4/FLAG3c6000e65 [2019-11-28 16:40:37,959 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:40:37,960 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-11-28 16:40:37,967 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/024120216/63a8063d7d9940aaa674065f24746ad4/FLAG3c6000e65 [2019-11-28 16:40:38,358 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/024120216/63a8063d7d9940aaa674065f24746ad4 [2019-11-28 16:40:38,361 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:40:38,363 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:40:38,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:40:38,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:40:38,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:40:38,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:40:38" (1/1) ... [2019-11-28 16:40:38,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3463e911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:38, skipping insertion in model container [2019-11-28 16:40:38,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:40:38" (1/1) ... [2019-11-28 16:40:38,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:40:38,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:40:38,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:40:38,662 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:40:38,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:40:38,708 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:40:38,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:38 WrapperNode [2019-11-28 16:40:38,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:40:38,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:40:38,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:40:38,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:40:38,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:38" (1/1) ... [2019-11-28 16:40:38,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:38" (1/1) ... [2019-11-28 16:40:38,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:40:38,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:40:38,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:40:38,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:40:38,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:38" (1/1) ... [2019-11-28 16:40:38,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:38" (1/1) ... [2019-11-28 16:40:38,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:38" (1/1) ... [2019-11-28 16:40:38,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:38" (1/1) ... [2019-11-28 16:40:38,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:38" (1/1) ... [2019-11-28 16:40:38,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:38" (1/1) ... [2019-11-28 16:40:38,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:38" (1/1) ... [2019-11-28 16:40:38,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:40:38,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:40:38,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:40:38,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:40:38,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:38" (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 [2019-11-28 16:40:38,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:40:38,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:40:39,638 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:40:39,639 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 16:40:39,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:40:39 BoogieIcfgContainer [2019-11-28 16:40:39,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:40:39,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:40:39,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:40:39,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:40:39,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:40:38" (1/3) ... [2019-11-28 16:40:39,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46500b78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:40:39, skipping insertion in model container [2019-11-28 16:40:39,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:38" (2/3) ... [2019-11-28 16:40:39,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46500b78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:40:39, skipping insertion in model container [2019-11-28 16:40:39,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:40:39" (3/3) ... [2019-11-28 16:40:39,653 INFO L109 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2019-11-28 16:40:39,663 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:40:39,671 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:40:39,684 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:40:39,710 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:40:39,710 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:40:39,710 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:40:39,710 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:40:39,711 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:40:39,711 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:40:39,711 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:40:39,712 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:40:39,727 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-28 16:40:39,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 16:40:39,733 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:40:39,734 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 16:40:39,735 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:40:39,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:40:39,742 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2019-11-28 16:40:39,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:40:39,755 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [465298502] [2019-11-28 16:40:39,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-28 16:40:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:40:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:40:40,004 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-28 16:40:40,005 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:40:40,206 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 16:40:40,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:40:40 BoogieIcfgContainer [2019-11-28 16:40:40,226 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:40:40,226 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:40:40,226 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:40:40,226 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:40:40,227 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:40:39" (3/4) ... [2019-11-28 16:40:40,229 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 16:40:40,265 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:40:40,265 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:40:40,267 INFO L168 Benchmark]: Toolchain (without parser) took 1904.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -163.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:40:40,268 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:40:40,269 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.21 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:40:40,270 INFO L168 Benchmark]: Boogie Procedure Inliner took 155.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 945.6 MB in the beginning and 1.2 GB in the end (delta: -204.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:40:40,271 INFO L168 Benchmark]: Boogie Preprocessor took 42.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:40:40,272 INFO L168 Benchmark]: RCFGBuilder took 731.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 11.5 GB. [2019-11-28 16:40:40,272 INFO L168 Benchmark]: TraceAbstraction took 584.02 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: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2019-11-28 16:40:40,273 INFO L168 Benchmark]: Witness Printer took 39.46 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. [2019-11-28 16:40:40,278 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 346.21 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 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 155.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 945.6 MB in the beginning and 1.2 GB in the end (delta: -204.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 42.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 731.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 584.02 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: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * Witness Printer took 39.46 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 [L6] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...