/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/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/float-benchs/cos_polynomial.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:14:53,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:14:53,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:14:53,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-01 00:14:53,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:14:53,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:14:53,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:14:53,149 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-01 00:14:53,157 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:14:53,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:14:53,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:14:53,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:14:53,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:14:53,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:14:53,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:14:53,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:14:53,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:14:53,159 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:14:53,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:14:53,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:14:53,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:14:53,160 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:14:53,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:14:53,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:14:53,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:14:53,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:14:53,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:14:53,161 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:14:53,161 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:14:53,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:14:53,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:14:53,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:14:53,344 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:14:53,367 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:14:53,369 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/cos_polynomial.c [2022-02-01 00:14:53,427 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ed1d24fc/91019c7aa9204031b85933a0754e0a13/FLAG30934eb1b [2022-02-01 00:14:53,736 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:14:53,736 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/cos_polynomial.c [2022-02-01 00:14:53,742 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ed1d24fc/91019c7aa9204031b85933a0754e0a13/FLAG30934eb1b [2022-02-01 00:14:53,750 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ed1d24fc/91019c7aa9204031b85933a0754e0a13 [2022-02-01 00:14:53,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:14:53,753 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:14:53,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:14:53,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:14:53,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:14:53,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:14:53" (1/1) ... [2022-02-01 00:14:53,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31800dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:53, skipping insertion in model container [2022-02-01 00:14:53,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:14:53" (1/1) ... [2022-02-01 00:14:53,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:14:53,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:14:53,869 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/cos_polynomial.c[619,632] [2022-02-01 00:14:53,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:14:53,885 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:14:53,903 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/cos_polynomial.c[619,632] [2022-02-01 00:14:53,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:14:53,927 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:14:53,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:53 WrapperNode [2022-02-01 00:14:53,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:14:53,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:14:53,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:14:53,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:14:53,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:53" (1/1) ... [2022-02-01 00:14:53,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:53" (1/1) ... [2022-02-01 00:14:53,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:53" (1/1) ... [2022-02-01 00:14:53,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:53" (1/1) ... [2022-02-01 00:14:53,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:53" (1/1) ... [2022-02-01 00:14:53,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:53" (1/1) ... [2022-02-01 00:14:53,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:53" (1/1) ... [2022-02-01 00:14:53,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:14:53,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:14:53,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:14:53,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:14:53,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:53" (1/1) ... [2022-02-01 00:14:53,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:14:53,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:14:53,979 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) [2022-02-01 00:14:53,981 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 [2022-02-01 00:14:54,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:14:54,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:14:54,014 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:14:54,014 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-01 00:14:54,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-01 00:14:54,014 INFO L138 BoogieDeclarations]: Found implementation of procedure mcos [2022-02-01 00:14:54,014 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:14:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:14:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:14:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:14:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:14:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-02-01 00:14:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-01 00:14:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-01 00:14:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure mcos [2022-02-01 00:14:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:14:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:14:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:14:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:14:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:14:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:14:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:14:54,076 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:14:54,077 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:14:54,189 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:14:54,194 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:14:54,205 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-01 00:14:54,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:14:54 BoogieIcfgContainer [2022-02-01 00:14:54,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:14:54,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:14:54,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:14:54,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:14:54,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:14:53" (1/3) ... [2022-02-01 00:14:54,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693421bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:14:54, skipping insertion in model container [2022-02-01 00:14:54,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:53" (2/3) ... [2022-02-01 00:14:54,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693421bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:14:54, skipping insertion in model container [2022-02-01 00:14:54,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:14:54" (3/3) ... [2022-02-01 00:14:54,224 INFO L111 eAbstractionObserver]: Analyzing ICFG cos_polynomial.c [2022-02-01 00:14:54,230 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:14:54,230 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:14:54,260 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:14:54,269 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=QVASR [2022-02-01 00:14:54,269 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:14:54,279 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 22 states have internal predecessors, (27), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-01 00:14:54,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-01 00:14:54,285 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:14:54,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:14:54,285 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:14:54,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:14:54,289 INFO L85 PathProgramCache]: Analyzing trace with hash -541857533, now seen corresponding path program 1 times [2022-02-01 00:14:54,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:14:54,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580033548] [2022-02-01 00:14:54,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:14:54,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:14:54,335 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:14:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:14:54,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:14:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:14:54,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-01 00:14:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:14:54,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-01 00:14:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:14:54,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-01 00:14:54,448 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:14:54,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580033548] [2022-02-01 00:14:54,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [580033548] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:14:54,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:14:54,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-01 00:14:54,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528402734] [2022-02-01 00:14:54,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:14:54,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-01 00:14:54,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:14:54,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-01 00:14:54,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-01 00:14:54,475 INFO L87 Difference]: Start difference. First operand has 33 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 22 states have internal predecessors, (27), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-01 00:14:54,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:14:54,521 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2022-02-01 00:14:54,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-01 00:14:54,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-02-01 00:14:54,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:14:54,528 INFO L225 Difference]: With dead ends: 57 [2022-02-01 00:14:54,528 INFO L226 Difference]: Without dead ends: 26 [2022-02-01 00:14:54,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-01 00:14:54,533 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-01 00:14:54,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 35 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-01 00:14:54,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-02-01 00:14:54,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-02-01 00:14:54,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-01 00:14:54,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-02-01 00:14:54,565 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 23 [2022-02-01 00:14:54,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:14:54,565 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-02-01 00:14:54,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-01 00:14:54,567 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-02-01 00:14:54,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-01 00:14:54,568 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:14:54,568 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:14:54,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:14:54,569 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:14:54,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:14:54,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1821721211, now seen corresponding path program 1 times [2022-02-01 00:14:54,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:14:54,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248139930] [2022-02-01 00:14:54,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:14:54,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:14:54,578 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:14:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:14:54,597 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:14:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:14:54,625 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:14:54,626 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:14:54,628 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:14:54,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:14:54,633 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:14:54,640 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:14:54,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:14:54 BoogieIcfgContainer [2022-02-01 00:14:54,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:14:54,656 INFO L158 Benchmark]: Toolchain (without parser) took 901.86ms. Allocated memory was 195.0MB in the beginning and 318.8MB in the end (delta: 123.7MB). Free memory was 139.4MB in the beginning and 247.4MB in the end (delta: -108.1MB). Peak memory consumption was 15.4MB. Max. memory is 8.0GB. [2022-02-01 00:14:54,656 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 195.0MB. Free memory is still 155.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:14:54,657 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.54ms. Allocated memory was 195.0MB in the beginning and 318.8MB in the end (delta: 123.7MB). Free memory was 139.2MB in the beginning and 292.7MB in the end (delta: -153.5MB). Peak memory consumption was 17.0MB. Max. memory is 8.0GB. [2022-02-01 00:14:54,659 INFO L158 Benchmark]: Boogie Preprocessor took 21.10ms. Allocated memory is still 318.8MB. Free memory was 292.7MB in the beginning and 290.9MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-01 00:14:54,661 INFO L158 Benchmark]: RCFGBuilder took 251.54ms. Allocated memory is still 318.8MB. Free memory was 290.9MB in the beginning and 279.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-01 00:14:54,661 INFO L158 Benchmark]: TraceAbstraction took 446.46ms. Allocated memory is still 318.8MB. Free memory was 278.9MB in the beginning and 247.4MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2022-02-01 00:14:54,666 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 195.0MB. Free memory is still 155.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 173.54ms. Allocated memory was 195.0MB in the beginning and 318.8MB in the end (delta: 123.7MB). Free memory was 139.2MB in the beginning and 292.7MB in the end (delta: -153.5MB). Peak memory consumption was 17.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.10ms. Allocated memory is still 318.8MB. Free memory was 292.7MB in the beginning and 290.9MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 251.54ms. Allocated memory is still 318.8MB. Free memory was 290.9MB in the beginning and 279.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 446.46ms. Allocated memory is still 318.8MB. Free memory was 278.9MB in the beginning and 247.4MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. 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: 14]: 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 56, overapproximation of someUnaryDOUBLEoperation at line 27, overapproximation of someBinaryArithmeticDOUBLEoperation at line 32. Possible FailurePath: [L16] double C1 = 4.16666666666666019037e-02; [L17] double C2 = -1.38888888888741095749e-03; [L18] double C3 = 2.48015872894767294178e-05; [L19] double C4 = -2.75573143513906633035e-07; [L20] double C5 = 2.08757232129817482790e-09; [L21] double C6 = -1.13596475577881948265e-11; [L49] double a, r; [L51] a = __VERIFIER_nondet_double() [L52] CALL assume_abort_if_not(a >= -0.5 && a <= 0.75) [L12] COND FALSE !(!cond) [L52] RET assume_abort_if_not(a >= -0.5 && a <= 0.75) [L54] CALL, EXPR mcos(a) [L25] double a, hz, z, r, qx, zr; [L26] z = x*x [L27] COND TRUE x < 0. [L27] x = -x [L28] hz = 0.5 * z [L29] r = z*(C1+z*(C2+z*(C3+z*(C4+z*(C5+z*C6))))) [L30] zr = z*r [L31] COND TRUE x < 0.3 [L32] return 1.-(hz-zr); [L54] RET, EXPR mcos(a) [L54] r = mcos(a) [L56] CALL __VERIFIER_assert(r >= 0. && r <= 1.1) [L14] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 36 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, 25 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 35 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 32 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 3, 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: 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 [2022-02-01 00:14:54,690 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...