/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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 22:55:24,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 22:55:24,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 22:55:25,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 22:55:25,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 22:55:25,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 22:55:25,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 22:55:25,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 22:55:25,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 22:55:25,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 22:55:25,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 22:55:25,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 22:55:25,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 22:55:25,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 22:55:25,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 22:55:25,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 22:55:25,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 22:55:25,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 22:55:25,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 22:55:25,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 22:55:25,091 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 22:55:25,098 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 22:55:25,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 22:55:25,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 22:55:25,100 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 22:55:25,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 22:55:25,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 22:55:25,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 22:55:25,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 22:55:25,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 22:55:25,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 22:55:25,101 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 22:55:25,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 22:55:25,102 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 22:55:25,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 22:55:25,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 22:55:25,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 22:55:25,102 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 22:55:25,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 22:55:25,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:55:25,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 22:55:25,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 22:55:25,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 22:55:25,104 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 22:55:25,104 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 22:55:25,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 22:55:25,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 22:55:25,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 22:55:25,340 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 22:55:25,340 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 22:55:25,342 INFO L432 ainManager$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 [2022-01-31 22:55:25,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b34f6d900/2f56cd28ed874091b7e730b07438e783/FLAG805ef6226 [2022-01-31 22:55:25,766 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 22:55:25,767 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2022-01-31 22:55:25,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b34f6d900/2f56cd28ed874091b7e730b07438e783/FLAG805ef6226 [2022-01-31 22:55:26,203 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b34f6d900/2f56cd28ed874091b7e730b07438e783 [2022-01-31 22:55:26,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 22:55:26,206 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 22:55:26,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 22:55:26,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 22:55:26,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 22:55:26,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:55:26" (1/1) ... [2022-01-31 22:55:26,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a814ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:26, skipping insertion in model container [2022-01-31 22:55:26,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:55:26" (1/1) ... [2022-01-31 22:55:26,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 22:55:26,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 22:55:26,379 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] [2022-01-31 22:55:26,387 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:55:26,398 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 22:55:26,415 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] [2022-01-31 22:55:26,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:55:26,427 INFO L208 MainTranslator]: Completed translation [2022-01-31 22:55:26,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:26 WrapperNode [2022-01-31 22:55:26,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 22:55:26,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 22:55:26,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 22:55:26,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 22:55:26,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:26" (1/1) ... [2022-01-31 22:55:26,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:26" (1/1) ... [2022-01-31 22:55:26,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:26" (1/1) ... [2022-01-31 22:55:26,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:26" (1/1) ... [2022-01-31 22:55:26,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:26" (1/1) ... [2022-01-31 22:55:26,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:26" (1/1) ... [2022-01-31 22:55:26,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:26" (1/1) ... [2022-01-31 22:55:26,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 22:55:26,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 22:55:26,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 22:55:26,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 22:55:26,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:26" (1/1) ... [2022-01-31 22:55:26,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:55:26,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 22:55:26,481 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) [2022-01-31 22:55:26,483 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 [2022-01-31 22:55:26,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 22:55:26,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 22:55:26,508 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 22:55:26,508 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 22:55:26,508 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 22:55:26,508 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 22:55:26,508 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 22:55:26,508 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 22:55:26,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 22:55:26,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-01-31 22:55:26,509 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 22:55:26,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 22:55:26,509 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2022-01-31 22:55:26,509 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 22:55:26,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 22:55:26,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 22:55:26,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 22:55:26,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 22:55:26,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 22:55:26,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 22:55:26,570 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 22:55:26,572 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 22:55:26,672 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 22:55:26,677 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 22:55:26,677 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-31 22:55:26,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:55:26 BoogieIcfgContainer [2022-01-31 22:55:26,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 22:55:26,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 22:55:26,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 22:55:26,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 22:55:26,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:55:26" (1/3) ... [2022-01-31 22:55:26,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1258be60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:55:26, skipping insertion in model container [2022-01-31 22:55:26,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:26" (2/3) ... [2022-01-31 22:55:26,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1258be60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:55:26, skipping insertion in model container [2022-01-31 22:55:26,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:55:26" (3/3) ... [2022-01-31 22:55:26,686 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_constant.c.p+cfa-reducer.c [2022-01-31 22:55:26,690 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 22:55:26,691 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 22:55:26,744 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 22:55:26,750 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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=JORDAN [2022-01-31 22:55:26,750 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 22:55:26,782 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 22:55:26,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-31 22:55:26,789 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:26,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:26,791 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:26,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:26,795 INFO L85 PathProgramCache]: Analyzing trace with hash -647156448, now seen corresponding path program 1 times [2022-01-31 22:55:26,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:26,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589410212] [2022-01-31 22:55:26,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:26,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:26,859 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:27,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:55:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:55:27,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:55:27,031 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:55:27,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589410212] [2022-01-31 22:55:27,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [589410212] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:55:27,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:55:27,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 22:55:27,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602547373] [2022-01-31 22:55:27,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:55:27,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 22:55:27,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:55:27,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 22:55:27,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 22:55:27,076 INFO L87 Difference]: Start difference. First operand has 29 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:27,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:55:27,268 INFO L93 Difference]: Finished difference Result 70 states and 95 transitions. [2022-01-31 22:55:27,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 22:55:27,270 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-01-31 22:55:27,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:55:27,278 INFO L225 Difference]: With dead ends: 70 [2022-01-31 22:55:27,279 INFO L226 Difference]: Without dead ends: 56 [2022-01-31 22:55:27,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 22:55:27,297 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 67 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:55:27,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 93 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:55:27,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-01-31 22:55:27,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 27. [2022-01-31 22:55:27,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:27,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2022-01-31 22:55:27,335 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 18 [2022-01-31 22:55:27,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:55:27,336 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2022-01-31 22:55:27,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:55:27,336 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2022-01-31 22:55:27,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-31 22:55:27,338 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:55:27,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:55:27,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 22:55:27,339 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:55:27,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:55:27,342 INFO L85 PathProgramCache]: Analyzing trace with hash -631099099, now seen corresponding path program 1 times [2022-01-31 22:55:27,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:55:27,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166151126] [2022-01-31 22:55:27,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:55:27,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:55:27,351 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:55:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 22:55:27,371 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 22:55:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 22:55:27,405 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-01-31 22:55:27,406 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 22:55:27,408 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 22:55:27,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 22:55:27,417 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 22:55:27,419 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 22:55:27,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:55:27 BoogieIcfgContainer [2022-01-31 22:55:27,430 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 22:55:27,431 INFO L158 Benchmark]: Toolchain (without parser) took 1224.65ms. Allocated memory was 187.7MB in the beginning and 255.9MB in the end (delta: 68.2MB). Free memory was 134.9MB in the beginning and 182.1MB in the end (delta: -47.2MB). Peak memory consumption was 19.8MB. Max. memory is 8.0GB. [2022-01-31 22:55:27,432 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 187.7MB. Free memory is still 151.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 22:55:27,432 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.48ms. Allocated memory was 187.7MB in the beginning and 255.9MB in the end (delta: 68.2MB). Free memory was 134.7MB in the beginning and 228.7MB in the end (delta: -94.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-01-31 22:55:27,433 INFO L158 Benchmark]: Boogie Preprocessor took 25.81ms. Allocated memory is still 255.9MB. Free memory was 228.7MB in the beginning and 227.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 22:55:27,433 INFO L158 Benchmark]: RCFGBuilder took 223.44ms. Allocated memory is still 255.9MB. Free memory was 227.1MB in the beginning and 216.1MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-31 22:55:27,434 INFO L158 Benchmark]: TraceAbstraction took 750.13ms. Allocated memory is still 255.9MB. Free memory was 215.6MB in the beginning and 182.1MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2022-01-31 22:55:27,436 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 187.7MB. Free memory is still 151.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 217.48ms. Allocated memory was 187.7MB in the beginning and 255.9MB in the end (delta: 68.2MB). Free memory was 134.7MB in the beginning and 228.7MB in the end (delta: -94.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.81ms. Allocated memory is still 255.9MB. Free memory was 228.7MB in the beginning and 227.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 223.44ms. Allocated memory is still 255.9MB. Free memory was 227.1MB in the beginning and 216.1MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 750.13ms. Allocated memory is still 255.9MB. Free memory was 215.6MB in the beginning and 182.1MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. 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 someBinaryDOUBLEComparisonOperation at line 88, overapproximation of someUnaryDOUBLEoperation at line 42, overapproximation of someBinaryArithmeticDOUBLEoperation at line 85. Possible FailurePath: [L1] int __return_main; [L11] double _EPS = 0.0000010; [L14] double __return_125; [L17] double main__d; [L18] double main__r; [L19] main__d = 1.0 [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; [L35] COND TRUE SqrtR__Input <= 1.0 [L37] SqrtR__xn = 1.0 [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; [L44] COND FALSE !(SqrtR__residu > SqrtR__lsup) [L126] COND FALSE !(SqrtR__residu < SqrtR__linf) [L132] SqrtR____CPAchecker_TMP_0 = 0 [L49] SqrtR__cond = SqrtR____CPAchecker_TMP_0 [L50] 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; [L88] COND FALSE !(main__r >= 1.0) [L114] main____CPAchecker_TMP_0 = 0 [L95] int __tmp_2; [L96] __tmp_2 = main____CPAchecker_TMP_0 [L97] int __VERIFIER_assert__cond; [L98] __VERIFIER_assert__cond = __tmp_2 [L99] COND TRUE __VERIFIER_assert__cond == 0 [L101] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 67 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 67 mSDsluCounter, 93 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 95 IncrementalHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 60 mSDtfsCounter, 95 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 29 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 [2022-01-31 22:55:27,472 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...