/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 -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 11:48:35,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 11:48:35,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 11:48:35,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 11:48:35,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 11:48:35,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 11:48:35,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 11:48:35,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 11:48:35,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 11:48:35,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 11:48:35,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 11:48:35,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 11:48:35,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 11:48:35,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 11:48:35,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 11:48:35,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 11:48:35,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 11:48:35,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 11:48:35,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 11:48:35,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 11:48:35,833 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 11:48:35,858 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 11:48:35,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 11:48:35,859 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 11:48:35,859 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 11:48:35,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 11:48:35,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 11:48:35,860 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 11:48:35,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 11:48:35,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 11:48:35,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 11:48:35,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 11:48:35,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 11:48:35,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 11:48:35,860 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 11:48:35,860 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 11:48:35,860 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 11:48:35,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 11:48:35,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 11:48:35,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 11:48:35,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 11:48:35,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 11:48:35,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 11:48:35,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 11:48:35,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 11:48:35,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 11:48:35,861 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 11:48:35,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 11:48:35,861 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 11:48:35,862 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 11:48:35,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 11:48:35,862 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 11:48:35,862 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 11:48:35,862 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 11:48:35,862 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 11:48:36,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 11:48:36,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 11:48:36,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 11:48:36,084 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 11:48:36,085 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 11:48:36,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/sqrt_Householder_constant.c [2022-01-10 11:48:36,135 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c998c19a2/5cac8de8116d46adb05620c729040d04/FLAGe46f8d709 [2022-01-10 11:48:36,483 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 11:48:36,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/sqrt_Householder_constant.c [2022-01-10 11:48:36,487 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c998c19a2/5cac8de8116d46adb05620c729040d04/FLAGe46f8d709 [2022-01-10 11:48:36,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c998c19a2/5cac8de8116d46adb05620c729040d04 [2022-01-10 11:48:36,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 11:48:36,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 11:48:36,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 11:48:36,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 11:48:36,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 11:48:36,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:48:36" (1/1) ... [2022-01-10 11:48:36,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d2f911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:36, skipping insertion in model container [2022-01-10 11:48:36,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:48:36" (1/1) ... [2022-01-10 11:48:36,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 11:48:36,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 11:48:37,064 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[831,844] [2022-01-10 11:48:37,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 11:48:37,096 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 11:48:37,107 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[831,844] [2022-01-10 11:48:37,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 11:48:37,129 INFO L208 MainTranslator]: Completed translation [2022-01-10 11:48:37,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:37 WrapperNode [2022-01-10 11:48:37,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 11:48:37,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 11:48:37,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 11:48:37,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 11:48:37,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:37" (1/1) ... [2022-01-10 11:48:37,150 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:37" (1/1) ... [2022-01-10 11:48:37,168 INFO L137 Inliner]: procedures = 16, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2022-01-10 11:48:37,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 11:48:37,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 11:48:37,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 11:48:37,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 11:48:37,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:37" (1/1) ... [2022-01-10 11:48:37,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:37" (1/1) ... [2022-01-10 11:48:37,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:37" (1/1) ... [2022-01-10 11:48:37,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:37" (1/1) ... [2022-01-10 11:48:37,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:37" (1/1) ... [2022-01-10 11:48:37,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:37" (1/1) ... [2022-01-10 11:48:37,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:37" (1/1) ... [2022-01-10 11:48:37,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 11:48:37,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 11:48:37,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 11:48:37,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 11:48:37,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:37" (1/1) ... [2022-01-10 11:48:37,210 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 11:48:37,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 11:48:37,227 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 11:48:37,233 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 11:48:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 11:48:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 11:48:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 11:48:37,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 11:48:37,337 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 11:48:37,338 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 11:48:37,445 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 11:48:37,449 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 11:48:37,449 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 11:48:37,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:48:37 BoogieIcfgContainer [2022-01-10 11:48:37,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 11:48:37,451 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 11:48:37,451 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 11:48:37,467 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 11:48:37,469 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:48:37" (1/1) ... [2022-01-10 11:48:37,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:48:37 BasicIcfg [2022-01-10 11:48:37,540 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 11:48:37,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 11:48:37,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 11:48:37,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 11:48:37,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:48:36" (1/4) ... [2022-01-10 11:48:37,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a07e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:48:37, skipping insertion in model container [2022-01-10 11:48:37,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:48:37" (2/4) ... [2022-01-10 11:48:37,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a07e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:48:37, skipping insertion in model container [2022-01-10 11:48:37,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:48:37" (3/4) ... [2022-01-10 11:48:37,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a07e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:48:37, skipping insertion in model container [2022-01-10 11:48:37,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:48:37" (4/4) ... [2022-01-10 11:48:37,545 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_constant.cTransformedIcfg [2022-01-10 11:48:37,548 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 11:48:37,548 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 11:48:37,593 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 11:48:37,599 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 11:48:37,599 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 11:48:37,632 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 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 11:48:37,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 11:48:37,635 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:48:37,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:48:37,636 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:48:37,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:48:37,639 INFO L85 PathProgramCache]: Analyzing trace with hash 774701449, now seen corresponding path program 1 times [2022-01-10 11:48:37,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:48:37,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153464720] [2022-01-10 11:48:37,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:48:37,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:48:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:48:37,783 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 11:48:37,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:48:37,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153464720] [2022-01-10 11:48:37,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153464720] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 11:48:37,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 11:48:37,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 11:48:37,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178282137] [2022-01-10 11:48:37,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 11:48:37,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 11:48:37,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:48:37,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 11:48:37,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 11:48:37,816 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 11:48:37,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:48:37,830 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2022-01-10 11:48:37,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 11:48:37,831 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2022-01-10 11:48:37,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:48:37,836 INFO L225 Difference]: With dead ends: 32 [2022-01-10 11:48:37,836 INFO L226 Difference]: Without dead ends: 13 [2022-01-10 11:48:37,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 11:48:37,842 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 11:48:37,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 11:48:37,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-01-10 11:48:37,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-01-10 11:48:37,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 11:48:37,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-01-10 11:48:37,867 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2022-01-10 11:48:37,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:48:37,867 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-01-10 11:48:37,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 11:48:37,868 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-01-10 11:48:37,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 11:48:37,869 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:48:37,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:48:37,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 11:48:37,870 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:48:37,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:48:37,871 INFO L85 PathProgramCache]: Analyzing trace with hash 775624970, now seen corresponding path program 1 times [2022-01-10 11:48:37,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:48:37,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074486911] [2022-01-10 11:48:37,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:48:37,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:48:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 11:48:37,901 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-10 11:48:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 11:48:37,934 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-10 11:48:37,935 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-10 11:48:37,936 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 11:48:37,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 11:48:37,941 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-10 11:48:37,943 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 11:48:37,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:48:37 BasicIcfg [2022-01-10 11:48:37,971 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 11:48:37,972 INFO L158 Benchmark]: Toolchain (without parser) took 1043.31ms. Allocated memory is still 179.3MB. Free memory was 123.6MB in the beginning and 108.2MB in the end (delta: 15.4MB). Peak memory consumption was 15.3MB. Max. memory is 8.0GB. [2022-01-10 11:48:37,973 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 179.3MB. Free memory was 139.9MB in the beginning and 139.8MB in the end (delta: 131.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 11:48:37,975 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.17ms. Allocated memory is still 179.3MB. Free memory was 123.5MB in the beginning and 149.6MB in the end (delta: -26.1MB). Peak memory consumption was 12.2MB. Max. memory is 8.0GB. [2022-01-10 11:48:37,975 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.72ms. Allocated memory is still 179.3MB. Free memory was 149.6MB in the beginning and 148.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 11:48:37,977 INFO L158 Benchmark]: Boogie Preprocessor took 33.24ms. Allocated memory is still 179.3MB. Free memory was 148.0MB in the beginning and 146.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 11:48:37,978 INFO L158 Benchmark]: RCFGBuilder took 247.99ms. Allocated memory is still 179.3MB. Free memory was 146.5MB in the beginning and 136.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-10 11:48:37,978 INFO L158 Benchmark]: IcfgTransformer took 89.38ms. Allocated memory is still 179.3MB. Free memory was 136.0MB in the beginning and 133.4MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-01-10 11:48:37,978 INFO L158 Benchmark]: TraceAbstraction took 429.96ms. Allocated memory is still 179.3MB. Free memory was 132.8MB in the beginning and 108.2MB in the end (delta: 24.6MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2022-01-10 11:48:37,983 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 179.3MB. Free memory was 139.9MB in the beginning and 139.8MB in the end (delta: 131.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 199.17ms. Allocated memory is still 179.3MB. Free memory was 123.5MB in the beginning and 149.6MB in the end (delta: -26.1MB). Peak memory consumption was 12.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.72ms. Allocated memory is still 179.3MB. Free memory was 149.6MB in the beginning and 148.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.24ms. Allocated memory is still 179.3MB. Free memory was 148.0MB in the beginning and 146.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 247.99ms. Allocated memory is still 179.3MB. Free memory was 146.5MB in the beginning and 136.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 89.38ms. Allocated memory is still 179.3MB. Free memory was 136.0MB in the beginning and 133.4MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * TraceAbstraction took 429.96ms. Allocated memory is still 179.3MB. Free memory was 132.8MB in the beginning and 108.2MB in the end (delta: 24.6MB). Peak memory consumption was 25.2MB. 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: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of floatingLiteral_0.000001_DOUBLE at line 22, overapproximation of fp.gt at line 33, overapproximation of fp.geq at line 55, overapproximation of fp.div at line 44, overapproximation of fp.neg at line 32, overapproximation of floatingLiteral_1.0_DOUBLE at line 28, overapproximation of floatingLiteral_1_DOUBLE at line 51, overapproximation of fp.leq at line 55, overapproximation of fp.lt at line 33, overapproximation of fp.mul at line 30. Possible FailurePath: [L22] double _EPS = 1e-6; [L49] double d, r; [L51] d = 1. [L51] COND TRUE d <= 20. [L53] CALL, EXPR SqrtR(d) [L26] double xn, xnp1, residu, lsup, linf; [L27] int i, cond; [L28] COND TRUE Input <= 1.0 [L28] xn = 1.0 [L29] xnp1 = xn [L30] residu = 2.0*_EPS*(xn+xnp1) [L31] lsup = _EPS * (xn+xnp1) [L32] linf = -lsup [L33] cond = ((residu > lsup) || (residu < linf)) [L34] i = 0 VAL [cond=0, i=0] [L35] COND FALSE !(\read(cond)) VAL [cond=0, i=0] [L44] return 1.0 / xnp1; VAL [cond=0, i=0] [L53] RET, EXPR SqrtR(d) [L53] r = SqrtR(d) [L55] CALL __VERIFIER_assert(r >= 1.0 && r <= 5.0) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 19 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-01-10 11:48:38,033 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...