./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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_sqrt_Quake.c.v+cfa-reducer.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 3d80131755697383884f625dd9587f1c200aa06d2b7c943b2856d52f75da1766 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 10:04:56,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 10:04:56,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 10:04:56,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 10:04:56,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 10:04:56,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 10:04:56,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 10:04:56,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 10:04:56,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 10:04:56,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 10:04:56,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 10:04:56,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 10:04:56,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 10:04:56,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 10:04:56,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 10:04:56,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 10:04:56,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 10:04:56,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 10:04:56,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 10:04:56,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 10:04:56,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 10:04:56,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 10:04:56,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 10:04:56,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 10:04:56,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 10:04:56,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 10:04:56,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 10:04:56,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 10:04:56,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 10:04:56,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 10:04:56,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 10:04:56,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 10:04:56,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 10:04:56,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 10:04:56,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 10:04:56,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 10:04:56,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 10:04:56,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 10:04:56,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 10:04:56,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 10:04:56,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 10:04:56,700 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 10:04:56,724 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 10:04:56,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 10:04:56,725 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 10:04:56,725 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 10:04:56,726 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 10:04:56,726 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 10:04:56,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 10:04:56,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 10:04:56,727 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 10:04:56,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 10:04:56,727 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 10:04:56,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 10:04:56,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 10:04:56,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 10:04:56,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 10:04:56,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 10:04:56,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 10:04:56,728 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 10:04:56,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 10:04:56,729 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 10:04:56,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 10:04:56,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 10:04:56,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 10:04:56,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 10:04:56,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:04:56,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 10:04:56,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 10:04:56,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 10:04:56,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 10:04:56,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 10:04:56,731 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 10:04:56,731 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 10:04:56,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 10:04:56,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 10:04:56,732 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d80131755697383884f625dd9587f1c200aa06d2b7c943b2856d52f75da1766 [2021-12-22 10:04:56,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 10:04:56,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 10:04:56,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 10:04:56,915 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 10:04:56,915 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 10:04:56,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c [2021-12-22 10:04:56,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ec28fe62/bf032894d4724ccd857765823a2b4ed3/FLAG94513d793 [2021-12-22 10:04:57,321 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 10:04:57,321 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c [2021-12-22 10:04:57,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ec28fe62/bf032894d4724ccd857765823a2b4ed3/FLAG94513d793 [2021-12-22 10:04:57,341 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ec28fe62/bf032894d4724ccd857765823a2b4ed3 [2021-12-22 10:04:57,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 10:04:57,345 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 10:04:57,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 10:04:57,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 10:04:57,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 10:04:57,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:04:57" (1/1) ... [2021-12-22 10:04:57,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@196f33c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:04:57, skipping insertion in model container [2021-12-22 10:04:57,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:04:57" (1/1) ... [2021-12-22 10:04:57,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 10:04:57,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 10:04:57,497 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_sqrt_Quake.c.v+cfa-reducer.c[1479,1492] [2021-12-22 10:04:57,506 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:04:57,513 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 10:04:57,535 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_sqrt_Quake.c.v+cfa-reducer.c[1479,1492] [2021-12-22 10:04:57,541 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:04:57,552 INFO L208 MainTranslator]: Completed translation [2021-12-22 10:04:57,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:04:57 WrapperNode [2021-12-22 10:04:57,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 10:04:57,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 10:04:57,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 10:04:57,554 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 10:04:57,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:04:57" (1/1) ... [2021-12-22 10:04:57,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:04:57" (1/1) ... [2021-12-22 10:04:57,580 INFO L137 Inliner]: procedures = 18, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 70 [2021-12-22 10:04:57,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 10:04:57,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 10:04:57,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 10:04:57,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 10:04:57,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:04:57" (1/1) ... [2021-12-22 10:04:57,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:04:57" (1/1) ... [2021-12-22 10:04:57,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:04:57" (1/1) ... [2021-12-22 10:04:57,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:04:57" (1/1) ... [2021-12-22 10:04:57,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:04:57" (1/1) ... [2021-12-22 10:04:57,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:04:57" (1/1) ... [2021-12-22 10:04:57,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:04:57" (1/1) ... [2021-12-22 10:04:57,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 10:04:57,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 10:04:57,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 10:04:57,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 10:04:57,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:04:57" (1/1) ... [2021-12-22 10:04:57,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:04:57,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 10:04:57,649 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) [2021-12-22 10:04:57,669 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 [2021-12-22 10:04:57,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 10:04:57,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 10:04:57,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 10:04:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-22 10:04:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 10:04:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-22 10:04:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 10:04:57,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 10:04:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 10:04:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 10:04:57,747 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 10:04:57,748 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 10:04:57,873 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 10:04:57,877 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 10:04:57,877 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 10:04:57,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:04:57 BoogieIcfgContainer [2021-12-22 10:04:57,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 10:04:57,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 10:04:57,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 10:04:57,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 10:04:57,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:04:57" (1/3) ... [2021-12-22 10:04:57,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc52a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:04:57, skipping insertion in model container [2021-12-22 10:04:57,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:04:57" (2/3) ... [2021-12-22 10:04:57,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc52a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:04:57, skipping insertion in model container [2021-12-22 10:04:57,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:04:57" (3/3) ... [2021-12-22 10:04:57,895 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c.v+cfa-reducer.c [2021-12-22 10:04:57,899 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 10:04:57,899 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 10:04:57,942 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 10:04:57,952 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 10:04:57,953 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 10:04:57,963 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 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) [2021-12-22 10:04:57,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-22 10:04:57,974 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:04:57,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:04:57,975 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:04:57,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:04:57,982 INFO L85 PathProgramCache]: Analyzing trace with hash -2137295023, now seen corresponding path program 1 times [2021-12-22 10:04:57,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 10:04:57,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974726891] [2021-12-22 10:04:57,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:04:57,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 10:04:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 10:04:58,083 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 10:04:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 10:04:58,124 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 10:04:58,127 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 10:04:58,127 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-22 10:04:58,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 10:04:58,132 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-22 10:04:58,134 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 10:04:58,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 10:04:58 BoogieIcfgContainer [2021-12-22 10:04:58,152 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 10:04:58,153 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 10:04:58,153 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 10:04:58,153 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 10:04:58,153 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:04:57" (3/4) ... [2021-12-22 10:04:58,155 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-22 10:04:58,155 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 10:04:58,156 INFO L158 Benchmark]: Toolchain (without parser) took 810.91ms. Allocated memory is still 100.7MB. Free memory was 73.1MB in the beginning and 50.2MB in the end (delta: 22.9MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. [2021-12-22 10:04:58,157 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 100.7MB. Free memory was 56.8MB in the beginning and 56.7MB in the end (delta: 42.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:04:58,157 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.25ms. Allocated memory is still 100.7MB. Free memory was 72.8MB in the beginning and 77.4MB in the end (delta: -4.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 10:04:58,158 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.38ms. Allocated memory is still 100.7MB. Free memory was 77.4MB in the beginning and 76.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:04:58,159 INFO L158 Benchmark]: Boogie Preprocessor took 34.52ms. Allocated memory is still 100.7MB. Free memory was 76.0MB in the beginning and 74.6MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-22 10:04:58,163 INFO L158 Benchmark]: RCFGBuilder took 261.28ms. Allocated memory is still 100.7MB. Free memory was 74.6MB in the beginning and 64.9MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 10:04:58,163 INFO L158 Benchmark]: TraceAbstraction took 272.55ms. Allocated memory is still 100.7MB. Free memory was 64.4MB in the beginning and 50.5MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-22 10:04:58,164 INFO L158 Benchmark]: Witness Printer took 3.09ms. Allocated memory is still 100.7MB. Free memory was 50.5MB in the beginning and 50.2MB in the end (delta: 322.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:04:58,170 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 100.7MB. Free memory was 56.8MB in the beginning and 56.7MB in the end (delta: 42.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 206.25ms. Allocated memory is still 100.7MB. Free memory was 72.8MB in the beginning and 77.4MB in the end (delta: -4.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.38ms. Allocated memory is still 100.7MB. Free memory was 77.4MB in the beginning and 76.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.52ms. Allocated memory is still 100.7MB. Free memory was 76.0MB in the beginning and 74.6MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 261.28ms. Allocated memory is still 100.7MB. Free memory was 74.6MB in the beginning and 64.9MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 272.55ms. Allocated memory is still 100.7MB. Free memory was 64.4MB in the beginning and 50.5MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 3.09ms. Allocated memory is still 100.7MB. Free memory was 50.5MB in the beginning and 50.2MB in the end (delta: 322.1kB). 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: 59]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 46, overapproximation of someBinaryArithmeticDOUBLEoperation at line 37. Possible FailurePath: [L1] int __return_main; [L17] float __return_72; [L18] int __return_87; VAL [__return_72=0, __return_87=0, __return_main=0] [L21] float main__a; [L22] float main__r; [L23] main__a = __VERIFIER_nondet_float() [L24] int main____CPAchecker_TMP_0; VAL [__return_72=0, __return_87=0, __return_main=0] [L25] COND TRUE main__a >= 0.10000000149011612 VAL [__return_72=0, __return_87=0, __return_main=0] [L27] COND TRUE main__a <= 100.0 [L29] main____CPAchecker_TMP_0 = 1 VAL [__return_72=0, __return_87=0, __return_main=0, main____CPAchecker_TMP_0=1] [L30] COND TRUE main____CPAchecker_TMP_0 != 0 [L33] float __tmp_1; [L34] __tmp_1 = main__a [L35] float InvSqrt__x; [L36] InvSqrt__x = __tmp_1 [L37] float InvSqrt__xhalf = 0.5 * InvSqrt__x; [L38] union float_int InvSqrt__i; [L39] InvSqrt__i.f = InvSqrt__x [L40] EXPR InvSqrt__i.i [L40] InvSqrt__i.i = 1597463007 - ((InvSqrt__i.i) >> 1) [L41] EXPR InvSqrt__i.f [L41] InvSqrt__x = InvSqrt__i.f [L42] InvSqrt__x = InvSqrt__x * (1.5 - ((InvSqrt__xhalf * InvSqrt__x) * InvSqrt__x)) [L43] __return_72 = InvSqrt__x [L44] main__r = __return_72 [L45] int main____CPAchecker_TMP_1; VAL [__return_72=1597463009, __return_87=0, __return_main=0, __tmp_1=1597463008, InvSqrt__i={5:0}, InvSqrt__x=1597463009, main____CPAchecker_TMP_0=1, main__a=1597463008, main__r=1597463009] [L46] COND FALSE !(main__r >= 0.0) VAL [__return_72=1597463009, __return_87=0, __return_main=0, __tmp_1=1597463008, InvSqrt__i={5:0}, InvSqrt__x=1597463009, main____CPAchecker_TMP_0=1, main__a=1597463008, main__r=1597463009] [L72] main____CPAchecker_TMP_1 = 0 VAL [__return_72=1597463009, __return_87=0, __return_main=0, __tmp_1=1597463008, InvSqrt__i={5:0}, InvSqrt__x=1597463009, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__a=1597463008, main__r=1597463009] [L53] int __tmp_2; [L54] __tmp_2 = main____CPAchecker_TMP_1 [L55] int __VERIFIER_assert__cond; [L56] __VERIFIER_assert__cond = __tmp_2 VAL [__return_72=1597463009, __return_87=0, __return_main=0, __tmp_1=1597463008, __tmp_2=0, __VERIFIER_assert__cond=0, InvSqrt__i={5:0}, InvSqrt__x=1597463009, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__a=1597463008, main__r=1597463009] [L57] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_72=1597463009, __return_87=0, __return_main=0, __tmp_1=1597463008, __tmp_2=0, __VERIFIER_assert__cond=0, InvSqrt__i={5:0}, InvSqrt__x=1597463009, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__a=1597463008, main__r=1597463009] [L59] reach_error() VAL [__return_72=1597463009, __return_87=0, __return_main=0, __tmp_1=1597463008, __tmp_2=0, __VERIFIER_assert__cond=0, InvSqrt__i={5:0}, InvSqrt__x=1597463009, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__a=1597463008, main__r=1597463009] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 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, 10 NumberOfCodeBlocks, 10 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, 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 [2021-12-22 10:04:58,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, 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_sqrt_Quake.c.v+cfa-reducer.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 3d80131755697383884f625dd9587f1c200aa06d2b7c943b2856d52f75da1766 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 10:04:59,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 10:04:59,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 10:04:59,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 10:04:59,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 10:04:59,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 10:04:59,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 10:04:59,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 10:04:59,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 10:04:59,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 10:04:59,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 10:04:59,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 10:04:59,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 10:04:59,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 10:04:59,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 10:04:59,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 10:04:59,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 10:04:59,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 10:04:59,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 10:04:59,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 10:04:59,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 10:04:59,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 10:04:59,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 10:04:59,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 10:04:59,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 10:04:59,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 10:04:59,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 10:04:59,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 10:04:59,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 10:04:59,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 10:04:59,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 10:04:59,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 10:04:59,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 10:04:59,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 10:04:59,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 10:04:59,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 10:04:59,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 10:04:59,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 10:04:59,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 10:04:59,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 10:04:59,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 10:04:59,929 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-22 10:04:59,957 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 10:04:59,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 10:04:59,958 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 10:04:59,958 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 10:04:59,959 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 10:04:59,959 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 10:04:59,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 10:04:59,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 10:04:59,960 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 10:04:59,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 10:04:59,961 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 10:04:59,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 10:04:59,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 10:04:59,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 10:04:59,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 10:04:59,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 10:04:59,962 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 10:04:59,962 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-22 10:04:59,962 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-22 10:04:59,962 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 10:04:59,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 10:04:59,963 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 10:04:59,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 10:04:59,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 10:04:59,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 10:04:59,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 10:04:59,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:04:59,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 10:04:59,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 10:04:59,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 10:04:59,970 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-22 10:04:59,971 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-22 10:04:59,971 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 10:04:59,971 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 10:04:59,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 10:04:59,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 10:04:59,971 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-22 10:04:59,972 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d80131755697383884f625dd9587f1c200aa06d2b7c943b2856d52f75da1766 [2021-12-22 10:05:00,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 10:05:00,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 10:05:00,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 10:05:00,234 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 10:05:00,234 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 10:05:00,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c [2021-12-22 10:05:00,279 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f45f3ad4/e1a796fe7f634927b5b81e0bd7a5294d/FLAGd90d75e2e [2021-12-22 10:05:00,629 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 10:05:00,629 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c [2021-12-22 10:05:00,634 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f45f3ad4/e1a796fe7f634927b5b81e0bd7a5294d/FLAGd90d75e2e [2021-12-22 10:05:00,650 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f45f3ad4/e1a796fe7f634927b5b81e0bd7a5294d [2021-12-22 10:05:00,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 10:05:00,653 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 10:05:00,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 10:05:00,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 10:05:00,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 10:05:00,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:05:00" (1/1) ... [2021-12-22 10:05:00,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f1cdb7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:05:00, skipping insertion in model container [2021-12-22 10:05:00,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:05:00" (1/1) ... [2021-12-22 10:05:00,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 10:05:00,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 10:05:00,824 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_sqrt_Quake.c.v+cfa-reducer.c[1479,1492] [2021-12-22 10:05:00,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:05:00,869 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 10:05:00,894 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_sqrt_Quake.c.v+cfa-reducer.c[1479,1492] [2021-12-22 10:05:00,898 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:05:00,912 INFO L208 MainTranslator]: Completed translation [2021-12-22 10:05:00,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:05:00 WrapperNode [2021-12-22 10:05:00,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 10:05:00,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 10:05:00,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 10:05:00,914 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 10:05:00,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:05:00" (1/1) ... [2021-12-22 10:05:00,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:05:00" (1/1) ... [2021-12-22 10:05:00,948 INFO L137 Inliner]: procedures = 21, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 71 [2021-12-22 10:05:00,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 10:05:00,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 10:05:00,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 10:05:00,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 10:05:00,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:05:00" (1/1) ... [2021-12-22 10:05:00,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:05:00" (1/1) ... [2021-12-22 10:05:00,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:05:00" (1/1) ... [2021-12-22 10:05:00,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:05:00" (1/1) ... [2021-12-22 10:05:00,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:05:00" (1/1) ... [2021-12-22 10:05:00,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:05:00" (1/1) ... [2021-12-22 10:05:00,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:05:00" (1/1) ... [2021-12-22 10:05:00,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 10:05:00,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 10:05:00,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 10:05:00,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 10:05:00,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:05:00" (1/1) ... [2021-12-22 10:05:01,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:05:01,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 10:05:01,015 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) [2021-12-22 10:05:01,034 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 [2021-12-22 10:05:01,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 10:05:01,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-22 10:05:01,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 10:05:01,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-12-22 10:05:01,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-22 10:05:01,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 10:05:01,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 10:05:01,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-12-22 10:05:01,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 10:05:01,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-22 10:05:01,100 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 10:05:01,101 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 10:05:03,780 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 10:05:03,784 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 10:05:03,784 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 10:05:03,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:05:03 BoogieIcfgContainer [2021-12-22 10:05:03,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 10:05:03,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 10:05:03,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 10:05:03,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 10:05:03,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:05:00" (1/3) ... [2021-12-22 10:05:03,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@690ce65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:05:03, skipping insertion in model container [2021-12-22 10:05:03,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:05:00" (2/3) ... [2021-12-22 10:05:03,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@690ce65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:05:03, skipping insertion in model container [2021-12-22 10:05:03,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:05:03" (3/3) ... [2021-12-22 10:05:03,791 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c.v+cfa-reducer.c [2021-12-22 10:05:03,794 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 10:05:03,794 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 10:05:03,824 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 10:05:03,831 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 10:05:03,832 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 10:05:03,842 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 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) [2021-12-22 10:05:03,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-22 10:05:03,846 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:05:03,847 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:05:03,847 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:05:03,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:05:03,851 INFO L85 PathProgramCache]: Analyzing trace with hash -2137295023, now seen corresponding path program 1 times [2021-12-22 10:05:03,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:05:03,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867512832] [2021-12-22 10:05:03,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:05:03,859 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:05:03,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:05:03,866 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) [2021-12-22 10:05:03,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-22 10:05:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:05:06,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-22 10:05:06,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:05:24,095 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_skolemized_q#valueAsBitvector_4| (_ BitVec 32))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_4|))))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 100.0)) (= |c_ULTIMATE.start_main_~main__r~0#1| ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse1 (let ((.cse2 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_4| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse1) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 2.0)) ((_ to_fp 11 53) c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) .cse0)) .cse1) .cse1))))))) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-12-22 10:05:41,456 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_4| (_ BitVec 32))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_4|))))) (and (fp.geq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 2500000037252903.0 25000000000000000.0))) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (let ((.cse1 (let ((.cse2 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_4| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven .cse1) (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) .cse0)) .cse1) .cse1))))))) (_ +zero 11 53))) (fp.leq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 100.0))))) is different from false [2021-12-22 10:05:43,555 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_4| (_ BitVec 32))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_4|))))) (and (fp.geq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 2500000037252903.0 25000000000000000.0))) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (let ((.cse1 (let ((.cse2 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_4| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven .cse1) (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) .cse0)) .cse1) .cse1))))))) (_ +zero 11 53))) (fp.leq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 100.0))))) is different from true