/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 11:48:34,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 11:48:34,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 11:48:34,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 11:48:34,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 11:48:34,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 11:48:34,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 11:48:34,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 11:48:34,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 11:48:34,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 11:48:34,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 11:48:34,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 11:48:34,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 11:48:34,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 11:48:34,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 11:48:34,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 11:48:34,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 11:48:34,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 11:48:34,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 11:48:34,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 11:48:34,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 11:48:34,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 11:48:34,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 11:48:34,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 11:48:34,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 11:48:34,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 11:48:34,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 11:48:34,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 11:48:34,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 11:48:34,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 11:48:34,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 11:48:34,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 11:48:34,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 11:48:34,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 11:48:34,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 11:48:34,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 11:48:34,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 11:48:34,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 11:48:34,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 11:48:34,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 11:48:34,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 11:48:34,715 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 11:48:34,748 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 11:48:34,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 11:48:34,749 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 11:48:34,749 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 11:48:34,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 11:48:34,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 11:48:34,750 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 11:48:34,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 11:48:34,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 11:48:34,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 11:48:34,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 11:48:34,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 11:48:34,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 11:48:34,752 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 11:48:34,752 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 11:48:34,752 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 11:48:34,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 11:48:34,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 11:48:34,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 11:48:34,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 11:48:34,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 11:48:34,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 11:48:34,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 11:48:34,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 11:48:34,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 11:48:34,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 11:48:34,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 11:48:34,754 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 11:48:34,754 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 11:48:34,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 11:48:34,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 11:48:34,754 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 11:48:34,755 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 11:48:34,755 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 11:48:34,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 11:48:34,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 11:48:34,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 11:48:34,996 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 11:48:34,996 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 11:48:34,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2022-01-10 11:48:35,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a7cbf81b/d57e5a4202e84d0da5b01557b754239c/FLAGd3641f1db [2022-01-10 11:48:35,414 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 11:48:35,415 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2022-01-10 11:48:35,422 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a7cbf81b/d57e5a4202e84d0da5b01557b754239c/FLAGd3641f1db [2022-01-10 11:48:35,434 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a7cbf81b/d57e5a4202e84d0da5b01557b754239c [2022-01-10 11:48:35,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 11:48:35,437 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 11:48:35,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 11:48:35,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 11:48:35,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 11:48:35,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:48:35" (1/1) ... [2022-01-10 11:48:35,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a9b4ed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:35, skipping insertion in model container [2022-01-10 11:48:35,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:48:35" (1/1) ... [2022-01-10 11:48:35,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 11:48:35,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 11:48:35,653 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c[2369,2382] [2022-01-10 11:48:35,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 11:48:35,675 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 11:48:35,701 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c[2369,2382] [2022-01-10 11:48:35,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 11:48:35,717 INFO L208 MainTranslator]: Completed translation [2022-01-10 11:48:35,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:35 WrapperNode [2022-01-10 11:48:35,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 11:48:35,718 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 11:48:35,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 11:48:35,719 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 11:48:35,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:35" (1/1) ... [2022-01-10 11:48:35,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:35" (1/1) ... [2022-01-10 11:48:35,752 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 93 [2022-01-10 11:48:35,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 11:48:35,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 11:48:35,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 11:48:35,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 11:48:35,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:35" (1/1) ... [2022-01-10 11:48:35,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:35" (1/1) ... [2022-01-10 11:48:35,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:35" (1/1) ... [2022-01-10 11:48:35,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:35" (1/1) ... [2022-01-10 11:48:35,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:35" (1/1) ... [2022-01-10 11:48:35,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:35" (1/1) ... [2022-01-10 11:48:35,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:35" (1/1) ... [2022-01-10 11:48:35,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 11:48:35,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 11:48:35,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 11:48:35,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 11:48:35,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:35" (1/1) ... [2022-01-10 11:48:35,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 11:48:35,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 11:48:35,798 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) [2022-01-10 11:48:35,800 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 [2022-01-10 11:48:35,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 11:48:35,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 11:48:35,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 11:48:35,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 11:48:35,886 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 11:48:35,887 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 11:48:35,980 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 11:48:35,985 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 11:48:35,985 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 11:48:35,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:48:35 BoogieIcfgContainer [2022-01-10 11:48:35,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 11:48:35,987 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 11:48:35,988 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 11:48:35,989 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 11:48:35,991 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:48:35" (1/1) ... [2022-01-10 11:48:36,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:48:36 BasicIcfg [2022-01-10 11:48:36,047 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 11:48:36,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 11:48:36,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 11:48:36,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 11:48:36,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:48:35" (1/4) ... [2022-01-10 11:48:36,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43633842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:48:36, skipping insertion in model container [2022-01-10 11:48:36,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:35" (2/4) ... [2022-01-10 11:48:36,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43633842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:48:36, skipping insertion in model container [2022-01-10 11:48:36,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:48:35" (3/4) ... [2022-01-10 11:48:36,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43633842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:48:36, skipping insertion in model container [2022-01-10 11:48:36,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:48:36" (4/4) ... [2022-01-10 11:48:36,053 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_constant.c.p+cfa-reducer.cTransformedIcfg [2022-01-10 11:48:36,060 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 11:48:36,060 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 11:48:36,145 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 11:48:36,150 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 [2022-01-10 11:48:36,151 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 11:48:36,168 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 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) [2022-01-10 11:48:36,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 11:48:36,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:48:36,172 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:48:36,173 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:48:36,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:48:36,177 INFO L85 PathProgramCache]: Analyzing trace with hash -738459790, now seen corresponding path program 1 times [2022-01-10 11:48:36,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:48:36,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663864768] [2022-01-10 11:48:36,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:48:36,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:48:36,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:48:36,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:48:36,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:48:36,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663864768] [2022-01-10 11:48:36,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663864768] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 11:48:36,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 11:48:36,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 11:48:36,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178435823] [2022-01-10 11:48:36,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 11:48:36,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 11:48:36,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:48:36,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 11:48:36,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 11:48:36,441 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 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 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-01-10 11:48:36,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:48:36,519 INFO L93 Difference]: Finished difference Result 66 states and 92 transitions. [2022-01-10 11:48:36,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 11:48:36,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2022-01-10 11:48:36,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:48:36,529 INFO L225 Difference]: With dead ends: 66 [2022-01-10 11:48:36,529 INFO L226 Difference]: Without dead ends: 38 [2022-01-10 11:48:36,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 11:48:36,534 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 36 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 11:48:36,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 110 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 11:48:36,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-10 11:48:36,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 23. [2022-01-10 11:48:36,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 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) [2022-01-10 11:48:36,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2022-01-10 11:48:36,577 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 14 [2022-01-10 11:48:36,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:48:36,577 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2022-01-10 11:48:36,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-01-10 11:48:36,578 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2022-01-10 11:48:36,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 11:48:36,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:48:36,578 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:48:36,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 11:48:36,579 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:48:36,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:48:36,580 INFO L85 PathProgramCache]: Analyzing trace with hash 939706417, now seen corresponding path program 1 times [2022-01-10 11:48:36,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:48:36,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621055420] [2022-01-10 11:48:36,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:48:36,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:48:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:48:36,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:48:36,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:48:36,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621055420] [2022-01-10 11:48:36,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621055420] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 11:48:36,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 11:48:36,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 11:48:36,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352891110] [2022-01-10 11:48:36,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 11:48:36,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 11:48:36,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:48:36,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 11:48:36,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 11:48:36,639 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-01-10 11:48:36,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:48:36,670 INFO L93 Difference]: Finished difference Result 60 states and 82 transitions. [2022-01-10 11:48:36,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 11:48:36,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2022-01-10 11:48:36,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:48:36,671 INFO L225 Difference]: With dead ends: 60 [2022-01-10 11:48:36,671 INFO L226 Difference]: Without dead ends: 58 [2022-01-10 11:48:36,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 11:48:36,673 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 61 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 11:48:36,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 119 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 11:48:36,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-01-10 11:48:36,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 25. [2022-01-10 11:48:36,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 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) [2022-01-10 11:48:36,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2022-01-10 11:48:36,682 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2022-01-10 11:48:36,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:48:36,682 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2022-01-10 11:48:36,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-01-10 11:48:36,683 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2022-01-10 11:48:36,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 11:48:36,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:48:36,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:48:36,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 11:48:36,684 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:48:36,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:48:36,685 INFO L85 PathProgramCache]: Analyzing trace with hash 940689520, now seen corresponding path program 1 times [2022-01-10 11:48:36,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:48:36,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708863244] [2022-01-10 11:48:36,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:48:36,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:48:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 11:48:36,714 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-10 11:48:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 11:48:36,740 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-10 11:48:36,741 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-10 11:48:36,741 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 11:48:36,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 11:48:36,746 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-01-10 11:48:36,748 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 11:48:36,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:48:36 BasicIcfg [2022-01-10 11:48:36,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 11:48:36,774 INFO L158 Benchmark]: Toolchain (without parser) took 1336.33ms. Allocated memory was 205.5MB in the beginning and 253.8MB in the end (delta: 48.2MB). Free memory was 148.0MB in the beginning and 170.1MB in the end (delta: -22.0MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2022-01-10 11:48:36,774 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 205.5MB. Free memory is still 164.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 11:48:36,775 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.65ms. Allocated memory was 205.5MB in the beginning and 253.8MB in the end (delta: 48.2MB). Free memory was 147.8MB in the beginning and 224.1MB in the end (delta: -76.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-10 11:48:36,775 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.99ms. Allocated memory is still 253.8MB. Free memory was 223.5MB in the beginning and 222.4MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 11:48:36,776 INFO L158 Benchmark]: Boogie Preprocessor took 18.29ms. Allocated memory is still 253.8MB. Free memory was 222.4MB in the beginning and 220.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 11:48:36,776 INFO L158 Benchmark]: RCFGBuilder took 215.15ms. Allocated memory is still 253.8MB. Free memory was 220.9MB in the beginning and 209.9MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-10 11:48:36,777 INFO L158 Benchmark]: IcfgTransformer took 59.41ms. Allocated memory is still 253.8MB. Free memory was 209.9MB in the beginning and 206.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-01-10 11:48:36,777 INFO L158 Benchmark]: TraceAbstraction took 724.85ms. Allocated memory is still 253.8MB. Free memory was 206.2MB in the beginning and 170.1MB in the end (delta: 36.2MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2022-01-10 11:48:36,780 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 205.5MB. Free memory is still 164.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 279.65ms. Allocated memory was 205.5MB in the beginning and 253.8MB in the end (delta: 48.2MB). Free memory was 147.8MB in the beginning and 224.1MB in the end (delta: -76.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.99ms. Allocated memory is still 253.8MB. Free memory was 223.5MB in the beginning and 222.4MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.29ms. Allocated memory is still 253.8MB. Free memory was 222.4MB in the beginning and 220.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 215.15ms. Allocated memory is still 253.8MB. Free memory was 220.9MB in the beginning and 209.9MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 59.41ms. Allocated memory is still 253.8MB. Free memory was 209.9MB in the beginning and 206.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * TraceAbstraction took 724.85ms. Allocated memory is still 253.8MB. Free memory was 206.2MB in the beginning and 170.1MB in the end (delta: 36.2MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * 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: 101]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of fp.gt at line 44, overapproximation of fp.geq at line 88, overapproximation of fp.div at line 85, overapproximation of fp.neg at line 42, overapproximation of floatingLiteral_1.0_DOUBLE at line 37, overapproximation of floatingLiteral_0_DOUBLE at line 14, overapproximation of floatingLiteral_0.0000010_DOUBLE at line 11, overapproximation of fp.leq at line 35, overapproximation of fp.lt at line 126, overapproximation of fp.mul at line 40. Possible FailurePath: [L1] int __return_main; [L11] double _EPS = 0.0000010; [L14] double __return_125; VAL [__return_main=0] [L17] double main__d; [L18] double main__r; [L19] main__d = 1.0 VAL [__return_main=0] [L21] COND TRUE main__d <= 20.0 [L24] double __tmp_1; [L25] __tmp_1 = main__d [L26] double SqrtR__Input; [L27] SqrtR__Input = __tmp_1 [L28] double SqrtR__xn; [L29] double SqrtR__xnp1; [L30] double SqrtR__residu; [L31] double SqrtR__lsup; [L32] double SqrtR__linf; [L33] int SqrtR__i; [L34] int SqrtR__cond; VAL [__return_main=0] [L35] COND TRUE SqrtR__Input <= 1.0 [L37] SqrtR__xn = 1.0 VAL [__return_main=0] [L39] SqrtR__xnp1 = SqrtR__xn [L40] SqrtR__residu = (2.0 * _EPS) * (SqrtR__xn + SqrtR__xnp1) [L41] SqrtR__lsup = _EPS * (SqrtR__xn + SqrtR__xnp1) [L42] SqrtR__linf = -SqrtR__lsup [L43] int SqrtR____CPAchecker_TMP_0; VAL [__return_main=0] [L44] COND FALSE !(SqrtR__residu > SqrtR__lsup) VAL [__return_main=0] [L126] COND FALSE !(SqrtR__residu < SqrtR__linf) [L132] SqrtR____CPAchecker_TMP_0 = 0 VAL [__return_main=0, SqrtR____CPAchecker_TMP_0=0] [L49] SqrtR__cond = SqrtR____CPAchecker_TMP_0 [L50] SqrtR__i = 0 VAL [__return_main=0, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0] [L52] COND FALSE !(!(SqrtR__cond == 0)) [L85] __return_125 = 1.0 / SqrtR__xnp1 [L86] main__r = __return_125 [L87] int main____CPAchecker_TMP_0; VAL [__return_main=0, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0] [L88] COND FALSE !(main__r >= 1.0) VAL [__return_main=0, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0] [L114] main____CPAchecker_TMP_0 = 0 VAL [__return_main=0, main____CPAchecker_TMP_0=0, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0] [L95] int __tmp_2; [L96] __tmp_2 = main____CPAchecker_TMP_0 [L97] int __VERIFIER_assert__cond; [L98] __VERIFIER_assert__cond = __tmp_2 VAL [__return_main=0, __tmp_2=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=0, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0] [L99] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0, __tmp_2=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=0, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0] [L101] reach_error() VAL [__return_main=0, __tmp_2=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=0, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 97 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 97 mSDsluCounter, 229 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 132 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28 IncrementalHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 97 mSDtfsCounter, 28 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=2, InterpolantAutomatonStates: 10, 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, 2 MinimizatonAttempts, 48 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 34 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 [2022-01-10 11:48:36,815 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...