/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_NONE.epf -i ../../../trunk/examples/svcomp/float-benchs/sqrt_biNewton_pseudoconstant.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:28:22,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:28:22,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:28:22,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 23:28:22,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:28:22,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:28:22,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:28:22,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:28:22,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:28:22,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:28:22,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:28:22,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:28:22,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:28:22,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:28:22,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:28:22,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:28:22,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 23:28:22,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:28:22,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:28:22,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:28:22,630 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:28:22,661 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:28:22,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:28:22,662 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:28:22,662 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:28:22,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:28:22,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:28:22,663 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:28:22,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:28:22,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:28:22,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:28:22,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:28:22,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:28:22,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:28:22,665 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:28:22,665 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:28:22,665 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:28:22,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:28:22,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:28:22,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:28:22,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:28:22,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:28:22,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:28:22,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:28:22,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:28:22,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:28:22,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:28:22,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:28:22,667 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:28:22,667 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:28:22,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:28:22,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:28:22,667 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:28:22,668 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:28:22,668 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:28:22,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:28:22,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:28:22,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:28:22,887 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:28:22,888 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:28:22,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/sqrt_biNewton_pseudoconstant.c [2022-01-10 23:28:22,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2036888ac/de1f8b20db014474b3ff6ac60723be4a/FLAG35eff1c17 [2022-01-10 23:28:23,303 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:28:23,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/sqrt_biNewton_pseudoconstant.c [2022-01-10 23:28:23,309 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2036888ac/de1f8b20db014474b3ff6ac60723be4a/FLAG35eff1c17 [2022-01-10 23:28:23,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2036888ac/de1f8b20db014474b3ff6ac60723be4a [2022-01-10 23:28:23,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:28:23,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:28:23,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:28:23,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:28:23,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:28:23,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:28:23" (1/1) ... [2022-01-10 23:28:23,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d4c9d79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:28:23, skipping insertion in model container [2022-01-10 23:28:23,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:28:23" (1/1) ... [2022-01-10 23:28:23,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:28:23,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:28:23,490 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_biNewton_pseudoconstant.c[570,583] [2022-01-10 23:28:23,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:28:23,515 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:28:23,525 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_biNewton_pseudoconstant.c[570,583] [2022-01-10 23:28:23,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:28:23,542 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:28:23,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:28:23 WrapperNode [2022-01-10 23:28:23,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:28:23,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:28:23,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:28:23,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:28:23,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:28:23" (1/1) ... [2022-01-10 23:28:23,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:28:23" (1/1) ... [2022-01-10 23:28:23,578 INFO L137 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 75 [2022-01-10 23:28:23,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:28:23,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:28:23,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:28:23,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:28:23,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:28:23" (1/1) ... [2022-01-10 23:28:23,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:28:23" (1/1) ... [2022-01-10 23:28:23,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:28:23" (1/1) ... [2022-01-10 23:28:23,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:28:23" (1/1) ... [2022-01-10 23:28:23,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:28:23" (1/1) ... [2022-01-10 23:28:23,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:28:23" (1/1) ... [2022-01-10 23:28:23,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:28:23" (1/1) ... [2022-01-10 23:28:23,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:28:23,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:28:23,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:28:23,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:28:23,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:28:23" (1/1) ... [2022-01-10 23:28:23,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:28:23,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:28:23,629 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 23:28:23,637 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 23:28:23,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:28:23,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:28:23,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:28:23,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:28:23,720 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:28:23,721 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:28:23,810 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:28:23,815 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:28:23,815 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 23:28:23,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:28:23 BoogieIcfgContainer [2022-01-10 23:28:23,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:28:23,817 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:28:23,818 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:28:23,818 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:28:23,820 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:28:23" (1/1) ... [2022-01-10 23:28:23,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:28:23 BasicIcfg [2022-01-10 23:28:23,865 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:28:23,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:28:23,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:28:23,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:28:23,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:28:23" (1/4) ... [2022-01-10 23:28:23,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a68f9da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:28:23, skipping insertion in model container [2022-01-10 23:28:23,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:28:23" (2/4) ... [2022-01-10 23:28:23,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a68f9da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:28:23, skipping insertion in model container [2022-01-10 23:28:23,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:28:23" (3/4) ... [2022-01-10 23:28:23,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a68f9da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:28:23, skipping insertion in model container [2022-01-10 23:28:23,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:28:23" (4/4) ... [2022-01-10 23:28:23,871 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_biNewton_pseudoconstant.cTransformedIcfg [2022-01-10 23:28:23,875 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:28:23,876 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 23:28:23,925 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:28:23,936 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 23:28:23,936 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 23:28:23,945 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 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 23:28:23,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 23:28:23,964 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:28:23,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:28:23,965 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:28:23,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:28:23,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1359376950, now seen corresponding path program 1 times [2022-01-10 23:28:23,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:28:23,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103012197] [2022-01-10 23:28:23,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:28:23,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:28:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:28:24,172 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 23:28:24,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:28:24,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103012197] [2022-01-10 23:28:24,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103012197] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:28:24,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:28:24,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:28:24,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248061509] [2022-01-10 23:28:24,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:28:24,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:28:24,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:28:24,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:28:24,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:28:24,218 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 23:28:24,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:28:24,240 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2022-01-10 23:28:24,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:28:24,242 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2022-01-10 23:28:24,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:28:24,249 INFO L225 Difference]: With dead ends: 36 [2022-01-10 23:28:24,249 INFO L226 Difference]: Without dead ends: 15 [2022-01-10 23:28:24,252 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 23:28:24,257 INFO L933 BasicCegarLoop]: 21 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, 21 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 23:28:24,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:28:24,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-01-10 23:28:24,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-01-10 23:28:24,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 23:28:24,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-01-10 23:28:24,294 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2022-01-10 23:28:24,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:28:24,294 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-01-10 23:28:24,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 23:28:24,294 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-01-10 23:28:24,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 23:28:24,297 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:28:24,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:28:24,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:28:24,298 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:28:24,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:28:24,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1129059404, now seen corresponding path program 1 times [2022-01-10 23:28:24,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:28:24,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090542478] [2022-01-10 23:28:24,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:28:24,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:28:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 23:28:24,357 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-10 23:28:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 23:28:24,412 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-10 23:28:24,413 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-10 23:28:24,414 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 23:28:24,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:28:24,418 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-10 23:28:24,420 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 23:28:24,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:28:24 BasicIcfg [2022-01-10 23:28:24,448 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 23:28:24,449 INFO L158 Benchmark]: Toolchain (without parser) took 1123.71ms. Allocated memory is still 174.1MB. Free memory was 117.4MB in the beginning and 100.7MB in the end (delta: 16.6MB). Peak memory consumption was 17.2MB. Max. memory is 8.0GB. [2022-01-10 23:28:24,449 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 174.1MB. Free memory is still 133.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 23:28:24,450 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.44ms. Allocated memory is still 174.1MB. Free memory was 117.2MB in the beginning and 143.7MB in the end (delta: -26.4MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. [2022-01-10 23:28:24,450 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.18ms. Allocated memory is still 174.1MB. Free memory was 143.7MB in the beginning and 142.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 23:28:24,450 INFO L158 Benchmark]: Boogie Preprocessor took 19.24ms. Allocated memory is still 174.1MB. Free memory was 142.2MB in the beginning and 140.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 23:28:24,451 INFO L158 Benchmark]: RCFGBuilder took 217.91ms. Allocated memory is still 174.1MB. Free memory was 140.6MB in the beginning and 129.6MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-10 23:28:24,451 INFO L158 Benchmark]: IcfgTransformer took 47.72ms. Allocated memory is still 174.1MB. Free memory was 129.6MB in the beginning and 126.9MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-01-10 23:28:24,452 INFO L158 Benchmark]: TraceAbstraction took 581.84ms. Allocated memory is still 174.1MB. Free memory was 126.4MB in the beginning and 100.7MB in the end (delta: 25.7MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2022-01-10 23:28:24,455 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 174.1MB. Free memory is still 133.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 207.44ms. Allocated memory is still 174.1MB. Free memory was 117.2MB in the beginning and 143.7MB in the end (delta: -26.4MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.18ms. Allocated memory is still 174.1MB. Free memory was 143.7MB in the beginning and 142.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.24ms. Allocated memory is still 174.1MB. Free memory was 142.2MB in the beginning and 140.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 217.91ms. Allocated memory is still 174.1MB. Free memory was 140.6MB in the beginning and 129.6MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 47.72ms. Allocated memory is still 174.1MB. Free memory was 129.6MB in the beginning and 126.9MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * TraceAbstraction took 581.84ms. Allocated memory is still 174.1MB. Free memory was 126.4MB in the beginning and 100.7MB in the end (delta: 25.7MB). Peak memory consumption was 26.2MB. 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: 13]: 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 15, overapproximation of fp.geq at line 53, overapproximation of fp.gt at line 26, overapproximation of fp.div at line 38, overapproximation of fp.neg at line 25, overapproximation of floatingLiteral_1.0_DOUBLE at line 21, overapproximation of floatingLiteral_1_DOUBLE at line 46, overapproximation of fp.leq at line 53, overapproximation of fp.lt at line 26, overapproximation of floatingLiteral_1E-8_DOUBLE at line 44, overapproximation of fp.mul at line 23. Possible FailurePath: [L15] double _EPS = 1e-6; [L43] double d, dd, r; [L44] double epsilon = 1e-8; [L46] d = 1. [L46] COND TRUE d <= 20. [L48] dd = __VERIFIER_nondet_double() [L49] CALL assume_abort_if_not(dd >= d-epsilon && dd <= d+epsilon) [L11] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L49] RET assume_abort_if_not(dd >= d-epsilon && dd <= d+epsilon) [L51] CALL, EXPR SqrtR(dd) [L19] double xn, xnp1, residu, lsup, linf; [L20] int i, cond; [L21] COND TRUE Input <= 1.0 [L21] xn = 1.0 [L22] xnp1 = xn [L23] residu = 2.0*_EPS*(xn+xnp1) [L24] lsup = _EPS * (xn+xnp1) [L25] linf = -lsup [L26] cond = ((residu > lsup) || (residu < linf)) [L27] i = 0 VAL [cond=0, i=0] [L28] COND FALSE !(\read(cond)) VAL [cond=0, i=0] [L38] return 1.0 / xnp1; VAL [cond=0, i=0] [L51] RET, EXPR SqrtR(dd) [L51] r = SqrtR(dd) [L53] CALL __VERIFIER_assert(r >= 0.9 && r <= 5.) [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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, 21 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, 21 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=19occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 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 23:28:24,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...