./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 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa8669e514192921cf64fdf0639cd37a443816328604ea9b0272ab52a6769b9f --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 02:33:21,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 02:33:21,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 02:33:21,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 02:33:21,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 02:33:21,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 02:33:21,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 02:33:21,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 02:33:21,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 02:33:21,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 02:33:21,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 02:33:21,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 02:33:21,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 02:33:21,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 02:33:21,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 02:33:21,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 02:33:21,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 02:33:21,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 02:33:21,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 02:33:21,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 02:33:21,576 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 02:33:21,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 02:33:21,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 02:33:21,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 02:33:21,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 02:33:21,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 02:33:21,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 02:33:21,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 02:33:21,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 02:33:21,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 02:33:21,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 02:33:21,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 02:33:21,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 02:33:21,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 02:33:21,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 02:33:21,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 02:33:21,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 02:33:21,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 02:33:21,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 02:33:21,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 02:33:21,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 02:33:21,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 02:33:21,594 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 02:33:21,616 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 02:33:21,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 02:33:21,617 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 02:33:21,617 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 02:33:21,618 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 02:33:21,618 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 02:33:21,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 02:33:21,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 02:33:21,618 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 02:33:21,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 02:33:21,619 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 02:33:21,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 02:33:21,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 02:33:21,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 02:33:21,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 02:33:21,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 02:33:21,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 02:33:21,620 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 02:33:21,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 02:33:21,621 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 02:33:21,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 02:33:21,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 02:33:21,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 02:33:21,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 02:33:21,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:33:21,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 02:33:21,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 02:33:21,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 02:33:21,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 02:33:21,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 02:33:21,623 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 02:33:21,623 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 02:33:21,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 02:33:21,623 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa8669e514192921cf64fdf0639cd37a443816328604ea9b0272ab52a6769b9f [2022-07-12 02:33:21,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 02:33:21,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 02:33:21,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 02:33:21,867 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 02:33:21,868 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 02:33:21,869 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_square-1.c [2022-07-12 02:33:21,922 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bad0155a9/d6239ebae8ac4cd3bd55b28b8a7a487a/FLAGdc36a218d [2022-07-12 02:33:22,298 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 02:33:22,298 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square-1.c [2022-07-12 02:33:22,303 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bad0155a9/d6239ebae8ac4cd3bd55b28b8a7a487a/FLAGdc36a218d [2022-07-12 02:33:22,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bad0155a9/d6239ebae8ac4cd3bd55b28b8a7a487a [2022-07-12 02:33:22,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 02:33:22,318 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 02:33:22,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 02:33:22,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 02:33:22,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 02:33:22,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:33:22" (1/1) ... [2022-07-12 02:33:22,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@344fd2d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:33:22, skipping insertion in model container [2022-07-12 02:33:22,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:33:22" (1/1) ... [2022-07-12 02:33:22,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 02:33:22,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 02:33:22,477 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square-1.c[487,500] [2022-07-12 02:33:22,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:33:22,495 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 02:33:22,504 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square-1.c[487,500] [2022-07-12 02:33:22,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:33:22,515 INFO L208 MainTranslator]: Completed translation [2022-07-12 02:33:22,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:33:22 WrapperNode [2022-07-12 02:33:22,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 02:33:22,518 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 02:33:22,518 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 02:33:22,518 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 02:33:22,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:33:22" (1/1) ... [2022-07-12 02:33:22,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:33:22" (1/1) ... [2022-07-12 02:33:22,539 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2022-07-12 02:33:22,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 02:33:22,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 02:33:22,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 02:33:22,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 02:33:22,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:33:22" (1/1) ... [2022-07-12 02:33:22,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:33:22" (1/1) ... [2022-07-12 02:33:22,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:33:22" (1/1) ... [2022-07-12 02:33:22,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:33:22" (1/1) ... [2022-07-12 02:33:22,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:33:22" (1/1) ... [2022-07-12 02:33:22,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:33:22" (1/1) ... [2022-07-12 02:33:22,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:33:22" (1/1) ... [2022-07-12 02:33:22,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 02:33:22,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 02:33:22,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 02:33:22,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 02:33:22,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:33:22" (1/1) ... [2022-07-12 02:33:22,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:33:22,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 02:33:22,588 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 02:33:22,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 02:33:22,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 02:33:22,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 02:33:22,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 02:33:22,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 02:33:22,671 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 02:33:22,692 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 02:33:22,801 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 02:33:22,805 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 02:33:22,806 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 02:33:22,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:33:22 BoogieIcfgContainer [2022-07-12 02:33:22,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 02:33:22,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 02:33:22,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 02:33:22,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 02:33:22,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 02:33:22" (1/3) ... [2022-07-12 02:33:22,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fdaf9a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:33:22, skipping insertion in model container [2022-07-12 02:33:22,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:33:22" (2/3) ... [2022-07-12 02:33:22,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fdaf9a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:33:22, skipping insertion in model container [2022-07-12 02:33:22,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:33:22" (3/3) ... [2022-07-12 02:33:22,817 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_square-1.c [2022-07-12 02:33:22,829 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 02:33:22,830 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 02:33:22,881 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 02:33:22,888 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6019e191, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6f5c3c2e [2022-07-12 02:33:22,889 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 02:33:22,894 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 02:33:22,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 02:33:22,899 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:33:22,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:33:22,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:33:22,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:33:22,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1804966375, now seen corresponding path program 1 times [2022-07-12 02:33:22,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 02:33:22,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313748060] [2022-07-12 02:33:22,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:33:22,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 02:33:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:33:23,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 02:33:23,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 02:33:23,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313748060] [2022-07-12 02:33:23,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313748060] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 02:33:23,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 02:33:23,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 02:33:23,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794560544] [2022-07-12 02:33:23,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 02:33:23,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 02:33:23,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 02:33:23,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 02:33:23,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 02:33:23,073 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 02:33:23,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 02:33:23,083 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-07-12 02:33:23,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 02:33:23,084 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-12 02:33:23,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 02:33:23,089 INFO L225 Difference]: With dead ends: 23 [2022-07-12 02:33:23,089 INFO L226 Difference]: Without dead ends: 8 [2022-07-12 02:33:23,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 02:33:23,095 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 02:33:23,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 02:33:23,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-07-12 02:33:23,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-07-12 02:33:23,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 02:33:23,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2022-07-12 02:33:23,117 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2022-07-12 02:33:23,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 02:33:23,117 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2022-07-12 02:33:23,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 02:33:23,118 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2022-07-12 02:33:23,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 02:33:23,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:33:23,119 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:33:23,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 02:33:23,120 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:33:23,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:33:23,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1806813417, now seen corresponding path program 1 times [2022-07-12 02:33:23,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 02:33:23,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183056672] [2022-07-12 02:33:23,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:33:23,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 02:33:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 02:33:23,140 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 02:33:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 02:33:23,164 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 02:33:23,164 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 02:33:23,166 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 02:33:23,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 02:33:23,170 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 02:33:23,173 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 02:33:23,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 02:33:23 BoogieIcfgContainer [2022-07-12 02:33:23,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 02:33:23,193 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 02:33:23,194 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 02:33:23,194 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 02:33:23,194 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:33:22" (3/4) ... [2022-07-12 02:33:23,196 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-12 02:33:23,197 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 02:33:23,198 INFO L158 Benchmark]: Toolchain (without parser) took 879.05ms. Allocated memory was 88.1MB in the beginning and 115.3MB in the end (delta: 27.3MB). Free memory was 44.1MB in the beginning and 65.9MB in the end (delta: -21.8MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2022-07-12 02:33:23,199 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 88.1MB. Free memory is still 60.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:33:23,201 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.49ms. Allocated memory was 88.1MB in the beginning and 115.3MB in the end (delta: 27.3MB). Free memory was 43.9MB in the beginning and 88.2MB in the end (delta: -44.3MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2022-07-12 02:33:23,202 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.89ms. Allocated memory is still 115.3MB. Free memory was 88.2MB in the beginning and 86.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:33:23,203 INFO L158 Benchmark]: Boogie Preprocessor took 18.31ms. Allocated memory is still 115.3MB. Free memory was 86.8MB in the beginning and 86.1MB in the end (delta: 779.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 02:33:23,203 INFO L158 Benchmark]: RCFGBuilder took 247.67ms. Allocated memory is still 115.3MB. Free memory was 86.1MB in the beginning and 89.0MB in the end (delta: -3.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-12 02:33:23,204 INFO L158 Benchmark]: TraceAbstraction took 383.83ms. Allocated memory is still 115.3MB. Free memory was 88.4MB in the beginning and 65.9MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-07-12 02:33:23,204 INFO L158 Benchmark]: Witness Printer took 3.73ms. Allocated memory is still 115.3MB. Free memory is still 65.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:33:23,208 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 88.1MB. Free memory is still 60.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 195.49ms. Allocated memory was 88.1MB in the beginning and 115.3MB in the end (delta: 27.3MB). Free memory was 43.9MB in the beginning and 88.2MB in the end (delta: -44.3MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.89ms. Allocated memory is still 115.3MB. Free memory was 88.2MB in the beginning and 86.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 18.31ms. Allocated memory is still 115.3MB. Free memory was 86.8MB in the beginning and 86.1MB in the end (delta: 779.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 247.67ms. Allocated memory is still 115.3MB. Free memory was 86.1MB in the beginning and 89.0MB in the end (delta: -3.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 383.83ms. Allocated memory is still 115.3MB. Free memory was 88.4MB in the beginning and 65.9MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 3.73ms. Allocated memory is still 115.3MB. Free memory is still 65.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 22, overapproximation of someBinaryArithmeticFLOAToperation at line 23. Possible FailurePath: [L17] float x, y, z; [L19] x = __VERIFIER_nondet_float() [L20] CALL assume_abort_if_not(x >= -1.f && x <= 1.f) [L11] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L20] RET assume_abort_if_not(x >= -1.f && x <= 1.f) [L22] COND TRUE x != 0.f [L23] y = x * x [L24] CALL __VERIFIER_assert(y != 0.f) [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 13 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: 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 [2022-07-12 02:33:23,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa8669e514192921cf64fdf0639cd37a443816328604ea9b0272ab52a6769b9f --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 02:33:25,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 02:33:25,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 02:33:25,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 02:33:25,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 02:33:25,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 02:33:25,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 02:33:25,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 02:33:25,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 02:33:25,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 02:33:25,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 02:33:25,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 02:33:25,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 02:33:25,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 02:33:25,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 02:33:25,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 02:33:25,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 02:33:25,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 02:33:25,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 02:33:25,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 02:33:25,391 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 02:33:25,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 02:33:25,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 02:33:25,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 02:33:25,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 02:33:25,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 02:33:25,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 02:33:25,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 02:33:25,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 02:33:25,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 02:33:25,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 02:33:25,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 02:33:25,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 02:33:25,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 02:33:25,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 02:33:25,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 02:33:25,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 02:33:25,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 02:33:25,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 02:33:25,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 02:33:25,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 02:33:25,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 02:33:25,408 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-12 02:33:25,444 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 02:33:25,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 02:33:25,445 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 02:33:25,446 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 02:33:25,446 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 02:33:25,447 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 02:33:25,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 02:33:25,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 02:33:25,448 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 02:33:25,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 02:33:25,449 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 02:33:25,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 02:33:25,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 02:33:25,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 02:33:25,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 02:33:25,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 02:33:25,450 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 02:33:25,450 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 02:33:25,451 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 02:33:25,451 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 02:33:25,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 02:33:25,451 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 02:33:25,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 02:33:25,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 02:33:25,452 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 02:33:25,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 02:33:25,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:33:25,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 02:33:25,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 02:33:25,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 02:33:25,453 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 02:33:25,454 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 02:33:25,454 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 02:33:25,454 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 02:33:25,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 02:33:25,454 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 02:33:25,455 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa8669e514192921cf64fdf0639cd37a443816328604ea9b0272ab52a6769b9f [2022-07-12 02:33:25,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 02:33:25,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 02:33:25,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 02:33:25,775 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 02:33:25,775 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 02:33:25,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_square-1.c [2022-07-12 02:33:25,825 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f79e1ad4/c12ff735f01149d785b5e907e148ee30/FLAG27b0a3250 [2022-07-12 02:33:26,112 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 02:33:26,112 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square-1.c [2022-07-12 02:33:26,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f79e1ad4/c12ff735f01149d785b5e907e148ee30/FLAG27b0a3250 [2022-07-12 02:33:26,555 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f79e1ad4/c12ff735f01149d785b5e907e148ee30 [2022-07-12 02:33:26,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 02:33:26,561 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 02:33:26,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 02:33:26,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 02:33:26,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 02:33:26,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:33:26" (1/1) ... [2022-07-12 02:33:26,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54f77f78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:33:26, skipping insertion in model container [2022-07-12 02:33:26,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:33:26" (1/1) ... [2022-07-12 02:33:26,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 02:33:26,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 02:33:26,670 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square-1.c[487,500] [2022-07-12 02:33:26,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:33:26,686 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 02:33:26,695 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square-1.c[487,500] [2022-07-12 02:33:26,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:33:26,714 INFO L208 MainTranslator]: Completed translation [2022-07-12 02:33:26,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:33:26 WrapperNode [2022-07-12 02:33:26,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 02:33:26,723 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 02:33:26,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 02:33:26,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 02:33:26,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:33:26" (1/1) ... [2022-07-12 02:33:26,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:33:26" (1/1) ... [2022-07-12 02:33:26,758 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 32 [2022-07-12 02:33:26,759 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 02:33:26,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 02:33:26,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 02:33:26,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 02:33:26,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:33:26" (1/1) ... [2022-07-12 02:33:26,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:33:26" (1/1) ... [2022-07-12 02:33:26,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:33:26" (1/1) ... [2022-07-12 02:33:26,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:33:26" (1/1) ... [2022-07-12 02:33:26,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:33:26" (1/1) ... [2022-07-12 02:33:26,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:33:26" (1/1) ... [2022-07-12 02:33:26,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:33:26" (1/1) ... [2022-07-12 02:33:26,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 02:33:26,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 02:33:26,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 02:33:26,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 02:33:26,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:33:26" (1/1) ... [2022-07-12 02:33:26,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:33:26,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 02:33:26,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 02:33:26,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 02:33:26,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 02:33:26,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 02:33:26,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 02:33:26,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 02:33:26,913 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 02:33:26,914 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 02:33:27,846 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 02:33:27,850 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 02:33:27,850 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 02:33:27,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:33:27 BoogieIcfgContainer [2022-07-12 02:33:27,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 02:33:27,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 02:33:27,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 02:33:27,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 02:33:27,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 02:33:26" (1/3) ... [2022-07-12 02:33:27,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f928b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:33:27, skipping insertion in model container [2022-07-12 02:33:27,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:33:26" (2/3) ... [2022-07-12 02:33:27,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f928b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:33:27, skipping insertion in model container [2022-07-12 02:33:27,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:33:27" (3/3) ... [2022-07-12 02:33:27,858 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_square-1.c [2022-07-12 02:33:27,868 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 02:33:27,868 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 02:33:27,909 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 02:33:27,914 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@287a1713, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@42795d1c [2022-07-12 02:33:27,915 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 02:33:27,920 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 02:33:27,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 02:33:27,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:33:27,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:33:27,926 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:33:27,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:33:27,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1804966375, now seen corresponding path program 1 times [2022-07-12 02:33:27,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 02:33:27,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802103582] [2022-07-12 02:33:27,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:33:27,938 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 02:33:27,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 02:33:27,940 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 02:33:27,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 02:33:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:33:28,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 02:33:28,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 02:33:28,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 02:33:28,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 02:33:28,022 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 02:33:28,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802103582] [2022-07-12 02:33:28,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [802103582] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 02:33:28,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 02:33:28,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 02:33:28,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175177673] [2022-07-12 02:33:28,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 02:33:28,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 02:33:28,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 02:33:28,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 02:33:28,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 02:33:28,046 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 02:33:28,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 02:33:28,055 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-07-12 02:33:28,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 02:33:28,056 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-12 02:33:28,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 02:33:28,061 INFO L225 Difference]: With dead ends: 23 [2022-07-12 02:33:28,061 INFO L226 Difference]: Without dead ends: 8 [2022-07-12 02:33:28,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 02:33:28,066 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 02:33:28,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 02:33:28,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-07-12 02:33:28,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-07-12 02:33:28,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 02:33:28,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2022-07-12 02:33:28,108 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2022-07-12 02:33:28,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 02:33:28,108 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2022-07-12 02:33:28,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 02:33:28,108 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2022-07-12 02:33:28,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 02:33:28,109 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:33:28,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:33:28,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-12 02:33:28,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 02:33:28,319 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:33:28,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:33:28,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1806813417, now seen corresponding path program 1 times [2022-07-12 02:33:28,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 02:33:28,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587162949] [2022-07-12 02:33:28,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:33:28,320 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 02:33:28,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 02:33:28,323 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 02:33:28,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 02:33:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 02:33:28,401 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 02:33:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 02:33:28,468 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-12 02:33:28,468 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 02:33:28,469 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 02:33:28,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-12 02:33:28,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 02:33:28,674 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 02:33:28,678 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 02:33:28,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 02:33:28 BoogieIcfgContainer [2022-07-12 02:33:28,703 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 02:33:28,714 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 02:33:28,714 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 02:33:28,714 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 02:33:28,715 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:33:27" (3/4) ... [2022-07-12 02:33:28,716 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-12 02:33:28,789 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 02:33:28,789 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 02:33:28,791 INFO L158 Benchmark]: Toolchain (without parser) took 2229.20ms. Allocated memory was 46.1MB in the beginning and 56.6MB in the end (delta: 10.5MB). Free memory was 22.3MB in the beginning and 33.8MB in the end (delta: -11.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:33:28,791 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 46.1MB. Free memory was 28.5MB in the beginning and 28.5MB in the end (delta: 36.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:33:28,793 INFO L158 Benchmark]: CACSL2BoogieTranslator took 146.67ms. Allocated memory is still 56.6MB. Free memory was 41.7MB in the beginning and 40.9MB in the end (delta: 871.7kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-12 02:33:28,793 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.42ms. Allocated memory is still 56.6MB. Free memory was 40.7MB in the beginning and 39.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 02:33:28,794 INFO L158 Benchmark]: Boogie Preprocessor took 39.75ms. Allocated memory is still 56.6MB. Free memory was 39.3MB in the beginning and 38.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:33:28,795 INFO L158 Benchmark]: RCFGBuilder took 1051.63ms. Allocated memory is still 56.6MB. Free memory was 38.1MB in the beginning and 29.9MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 02:33:28,795 INFO L158 Benchmark]: TraceAbstraction took 860.08ms. Allocated memory is still 56.6MB. Free memory was 29.4MB in the beginning and 35.3MB in the end (delta: -6.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:33:28,811 INFO L158 Benchmark]: Witness Printer took 75.95ms. Allocated memory is still 56.6MB. Free memory was 35.3MB in the beginning and 33.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 02:33:28,815 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 46.1MB. Free memory was 28.5MB in the beginning and 28.5MB in the end (delta: 36.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 146.67ms. Allocated memory is still 56.6MB. Free memory was 41.7MB in the beginning and 40.9MB in the end (delta: 871.7kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.42ms. Allocated memory is still 56.6MB. Free memory was 40.7MB in the beginning and 39.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.75ms. Allocated memory is still 56.6MB. Free memory was 39.3MB in the beginning and 38.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1051.63ms. Allocated memory is still 56.6MB. Free memory was 38.1MB in the beginning and 29.9MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 860.08ms. Allocated memory is still 56.6MB. Free memory was 29.4MB in the beginning and 35.3MB in the end (delta: -6.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 75.95ms. Allocated memory is still 56.6MB. Free memory was 35.3MB in the beginning and 33.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] float x, y, z; [L19] x = __VERIFIER_nondet_float() [L20] CALL assume_abort_if_not(x >= -1.f && x <= 1.f) [L11] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L20] RET assume_abort_if_not(x >= -1.f && x <= 1.f) [L22] COND TRUE x != 0.f [L23] y = x * x [L24] CALL __VERIFIER_assert(y != 0.f) [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 13 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 25 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-12 02:33:28,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE