./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/inv_square-1.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/inv_square-1.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 5cdc4d12f446be57385f35c672efbdd6980b00fa .......................................................................................................................................................................................................................... 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/inv_square-1.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 5cdc4d12f446be57385f35c672efbdd6980b00fa ................................................................................................................................................................................................................................ 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 16:41:24,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:41:24,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:41:24,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:41:24,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:41:24,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:41:24,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:41:24,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:41:24,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:41:24,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:41:24,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:41:24,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:41:24,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:41:24,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:41:24,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:41:24,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:41:24,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:41:24,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:41:24,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:41:24,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:41:24,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:41:24,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:41:24,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:41:24,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:41:24,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:41:24,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:41:24,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:41:24,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:41:24,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:41:24,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:41:24,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:41:24,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:41:24,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:41:24,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:41:24,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:41:24,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:41:24,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:41:24,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:41:24,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:41:24,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:41:24,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:41:24,627 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:41:24,649 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:41:24,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:41:24,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:41:24,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:41:24,654 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:41:24,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:41:24,655 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:41:24,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:41:24,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:41:24,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:41:24,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:41:24,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:41:24,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:41:24,658 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:41:24,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:41:24,659 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:41:24,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:41:24,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:41:24,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:41:24,660 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:41:24,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:41:24,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:41:24,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:41:24,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:41:24,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:41:24,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:41:24,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:41:24,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:41:24,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:41:24,663 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 -> 5cdc4d12f446be57385f35c672efbdd6980b00fa [2019-11-28 16:41:24,974 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:41:24,996 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:41:25,000 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:41:25,001 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:41:25,002 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:41:25,003 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_square-1.c [2019-11-28 16:41:25,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89ba7d9d3/c5cbec0dcf0349e0adddb0f49c680427/FLAGa0973ea1e [2019-11-28 16:41:25,591 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:41:25,591 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square-1.c [2019-11-28 16:41:25,598 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89ba7d9d3/c5cbec0dcf0349e0adddb0f49c680427/FLAGa0973ea1e [2019-11-28 16:41:25,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89ba7d9d3/c5cbec0dcf0349e0adddb0f49c680427 [2019-11-28 16:41:25,948 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:41:25,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:41:25,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:41:25,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:41:25,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:41:25,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:41:25" (1/1) ... [2019-11-28 16:41:25,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21e7655c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:25, skipping insertion in model container [2019-11-28 16:41:25,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:41:25" (1/1) ... [2019-11-28 16:41:25,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:41:25,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:41:26,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:41:26,170 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:41:26,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:41:26,211 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:41:26,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:26 WrapperNode [2019-11-28 16:41:26,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:41:26,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:41:26,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:41:26,214 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:41:26,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:26" (1/1) ... [2019-11-28 16:41:26,234 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:26" (1/1) ... [2019-11-28 16:41:26,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:41:26,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:41:26,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:41:26,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:41:26,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:26" (1/1) ... [2019-11-28 16:41:26,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:26" (1/1) ... [2019-11-28 16:41:26,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:26" (1/1) ... [2019-11-28 16:41:26,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:26" (1/1) ... [2019-11-28 16:41:26,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:26" (1/1) ... [2019-11-28 16:41:26,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:26" (1/1) ... [2019-11-28 16:41:26,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:26" (1/1) ... [2019-11-28 16:41:26,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:41:26,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:41:26,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:41:26,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:41:26,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:26" (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 16:41:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:41:26,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:41:26,529 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:41:26,530 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 16:41:26,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:41:26 BoogieIcfgContainer [2019-11-28 16:41:26,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:41:26,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:41:26,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:41:26,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:41:26,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:41:25" (1/3) ... [2019-11-28 16:41:26,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4c7455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:41:26, skipping insertion in model container [2019-11-28 16:41:26,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:26" (2/3) ... [2019-11-28 16:41:26,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4c7455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:41:26, skipping insertion in model container [2019-11-28 16:41:26,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:41:26" (3/3) ... [2019-11-28 16:41:26,539 INFO L109 eAbstractionObserver]: Analyzing ICFG inv_square-1.c [2019-11-28 16:41:26,547 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:41:26,553 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:41:26,563 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:41:26,589 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:41:26,589 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:41:26,590 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:41:26,590 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:41:26,590 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:41:26,590 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:41:26,590 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:41:26,591 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:41:26,607 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-11-28 16:41:26,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 16:41:26,613 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:41:26,615 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 16:41:26,615 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:41:26,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:41:26,622 INFO L82 PathProgramCache]: Analyzing trace with hash 957382, now seen corresponding path program 1 times [2019-11-28 16:41:26,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:41:26,630 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595017294] [2019-11-28 16:41:26,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:41:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:41:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:41:26,735 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:41:26,736 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:41:26,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:41:26 BoogieIcfgContainer [2019-11-28 16:41:26,755 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:41:26,756 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:41:26,756 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:41:26,756 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:41:26,757 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:41:26" (3/4) ... [2019-11-28 16:41:26,762 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:41:26,762 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:41:26,765 INFO L168 Benchmark]: Toolchain (without parser) took 814.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -137.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:41:26,766 INFO L168 Benchmark]: CDTParser took 0.95 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:41:26,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.31 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:41:26,769 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -178.6 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:41:26,769 INFO L168 Benchmark]: Boogie Preprocessor took 17.47 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. [2019-11-28 16:41:26,770 INFO L168 Benchmark]: RCFGBuilder took 202.35 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: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. [2019-11-28 16:41:26,771 INFO L168 Benchmark]: TraceAbstraction took 223.60 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: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:41:26,772 INFO L168 Benchmark]: Witness Printer took 6.48 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 16:41:26,777 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.95 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 262.31 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.3 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 97.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -178.6 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.47 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. * RCFGBuilder took 202.35 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: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 223.60 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: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * Witness Printer took 6.48 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: 8]: 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 18. Possible FailurePath: [L12] float x, y, z; [L14] x = __VERIFIER_nondet_float() [L17] COND TRUE x != 0.f [L18] y = x * x [L8] COND TRUE !(cond) [L8] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 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=10occurred 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, 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 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 16:41:28,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:41:28,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:41:28,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:41:28,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:41:28,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:41:28,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:41:28,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:41:28,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:41:28,827 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:41:28,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:41:28,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:41:28,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:41:28,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:41:28,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:41:28,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:41:28,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:41:28,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:41:28,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:41:28,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:41:28,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:41:28,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:41:28,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:41:28,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:41:28,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:41:28,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:41:28,848 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:41:28,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:41:28,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:41:28,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:41:28,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:41:28,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:41:28,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:41:28,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:41:28,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:41:28,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:41:28,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:41:28,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:41:28,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:41:28,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:41:28,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:41:28,861 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 16:41:28,876 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:41:28,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:41:28,878 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:41:28,879 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:41:28,879 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:41:28,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:41:28,879 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:41:28,880 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:41:28,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:41:28,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:41:28,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:41:28,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:41:28,881 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 16:41:28,881 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 16:41:28,882 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:41:28,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:41:28,882 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:41:28,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:41:28,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:41:28,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:41:28,883 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:41:28,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:41:28,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:41:28,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:41:28,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:41:28,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:41:28,885 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 16:41:28,885 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 16:41:28,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:41:28,886 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:41:28,886 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 16:41:28,887 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 -> 5cdc4d12f446be57385f35c672efbdd6980b00fa [2019-11-28 16:41:29,211 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:41:29,225 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:41:29,228 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:41:29,230 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:41:29,231 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:41:29,232 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_square-1.c [2019-11-28 16:41:29,295 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23ec21580/e83350937130469e99d3cf50385338a7/FLAG4387df8b5 [2019-11-28 16:41:29,755 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:41:29,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square-1.c [2019-11-28 16:41:29,764 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23ec21580/e83350937130469e99d3cf50385338a7/FLAG4387df8b5 [2019-11-28 16:41:30,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23ec21580/e83350937130469e99d3cf50385338a7 [2019-11-28 16:41:30,172 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:41:30,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:41:30,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:41:30,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:41:30,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:41:30,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:41:30" (1/1) ... [2019-11-28 16:41:30,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@569f7f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:30, skipping insertion in model container [2019-11-28 16:41:30,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:41:30" (1/1) ... [2019-11-28 16:41:30,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:41:30,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:41:30,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:41:30,383 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:41:30,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:41:30,417 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:41:30,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:30 WrapperNode [2019-11-28 16:41:30,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:41:30,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:41:30,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:41:30,420 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:41:30,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:30" (1/1) ... [2019-11-28 16:41:30,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:30" (1/1) ... [2019-11-28 16:41:30,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:41:30,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:41:30,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:41:30,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:41:30,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:30" (1/1) ... [2019-11-28 16:41:30,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:30" (1/1) ... [2019-11-28 16:41:30,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:30" (1/1) ... [2019-11-28 16:41:30,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:30" (1/1) ... [2019-11-28 16:41:30,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:30" (1/1) ... [2019-11-28 16:41:30,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:30" (1/1) ... [2019-11-28 16:41:30,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:30" (1/1) ... [2019-11-28 16:41:30,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:41:30,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:41:30,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:41:30,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:41:30,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:30" (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 16:41:30,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:41:30,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:41:31,386 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:41:31,387 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 16:41:31,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:41:31 BoogieIcfgContainer [2019-11-28 16:41:31,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:41:31,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:41:31,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:41:31,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:41:31,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:41:30" (1/3) ... [2019-11-28 16:41:31,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd8a501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:41:31, skipping insertion in model container [2019-11-28 16:41:31,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:30" (2/3) ... [2019-11-28 16:41:31,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd8a501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:41:31, skipping insertion in model container [2019-11-28 16:41:31,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:41:31" (3/3) ... [2019-11-28 16:41:31,396 INFO L109 eAbstractionObserver]: Analyzing ICFG inv_square-1.c [2019-11-28 16:41:31,404 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:41:31,412 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:41:31,424 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:41:31,450 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:41:31,450 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:41:31,450 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:41:31,451 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:41:31,452 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:41:31,452 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:41:31,453 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:41:31,453 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:41:31,468 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-28 16:41:31,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 16:41:31,476 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:41:31,477 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 16:41:31,477 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:41:31,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:41:31,484 INFO L82 PathProgramCache]: Analyzing trace with hash 28693796, now seen corresponding path program 1 times [2019-11-28 16:41:31,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:41:31,494 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722894571] [2019-11-28 16:41:31,495 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 16:41:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:41:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:41:31,727 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-28 16:41:31,728 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:41:31,930 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 16:41:31,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:41:31 BoogieIcfgContainer [2019-11-28 16:41:31,951 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:41:31,952 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:41:31,952 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:41:31,952 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:41:31,953 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:41:31" (3/4) ... [2019-11-28 16:41:31,955 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 16:41:31,994 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:41:31,995 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:41:31,998 INFO L168 Benchmark]: Toolchain (without parser) took 1823.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -131.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:41:31,999 INFO L168 Benchmark]: CDTParser took 0.26 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 16:41:32,003 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.65 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:41:32,004 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -180.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:41:32,005 INFO L168 Benchmark]: Boogie Preprocessor took 25.88 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:41:32,006 INFO L168 Benchmark]: RCFGBuilder took 840.57 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: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:41:32,007 INFO L168 Benchmark]: TraceAbstraction took 562.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:41:32,007 INFO L168 Benchmark]: Witness Printer took 43.31 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 16:41:32,016 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 243.65 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 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 101.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -180.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.88 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 840.57 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: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 562.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. * Witness Printer took 43.31 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: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] float x, y, z; [L14] x = __VERIFIER_nondet_float() [L17] COND TRUE x != 0.f [L18] y = x * x [L8] COND TRUE !(cond) [L8] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 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=11occurred 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, 5 NumberOfCodeBlocks, 5 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...