/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-newlib/float_req_bl_0663a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 23:01:22,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:01:22,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:01:22,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 23:01:22,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 23:01:22,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 23:01:22,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 23:01:22,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 23:01:22,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 23:01:22,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 23:01:22,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 23:01:22,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 23:01:22,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 23:01:22,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 23:01:22,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 23:01:22,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 23:01:22,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 23:01:22,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:01:22,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:01:22,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:01:22,737 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 23:01:22,750 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:01:22,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:01:22,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:01:22,752 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 23:01:22,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:01:22,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 23:01:22,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:01:22,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:01:22,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:01:22,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:01:22,753 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 23:01:22,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:01:22,754 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:01:22,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:01:22,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:01:22,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:01:22,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:01:22,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:01:22,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:01:22,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:01:22,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:01:22,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:01:22,755 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 23:01:22,755 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:01:22,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:01:22,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:01:22,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:01:22,965 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:01:22,966 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:01:22,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0663a.c [2022-01-31 23:01:23,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a63d6a160/79a30adc76234f7aae13ac89cad3755c/FLAGd613bb2bf [2022-01-31 23:01:23,373 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:01:23,373 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0663a.c [2022-01-31 23:01:23,389 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a63d6a160/79a30adc76234f7aae13ac89cad3755c/FLAGd613bb2bf [2022-01-31 23:01:23,774 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a63d6a160/79a30adc76234f7aae13ac89cad3755c [2022-01-31 23:01:23,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:01:23,777 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:01:23,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:01:23,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:01:23,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:01:23,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:01:23" (1/1) ... [2022-01-31 23:01:23,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e75f66c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:23, skipping insertion in model container [2022-01-31 23:01:23,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:01:23" (1/1) ... [2022-01-31 23:01:23,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:01:23,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:01:24,091 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-newlib/float_req_bl_0663a.c[5276,5289] [2022-01-31 23:01:24,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:01:24,106 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:01:24,165 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-newlib/float_req_bl_0663a.c[5276,5289] [2022-01-31 23:01:24,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:01:24,185 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:01:24,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:24 WrapperNode [2022-01-31 23:01:24,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:01:24,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:01:24,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:01:24,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:01:24,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:24" (1/1) ... [2022-01-31 23:01:24,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:24" (1/1) ... [2022-01-31 23:01:24,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:24" (1/1) ... [2022-01-31 23:01:24,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:24" (1/1) ... [2022-01-31 23:01:24,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:24" (1/1) ... [2022-01-31 23:01:24,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:24" (1/1) ... [2022-01-31 23:01:24,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:24" (1/1) ... [2022-01-31 23:01:24,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:01:24,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:01:24,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:01:24,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:01:24,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:24" (1/1) ... [2022-01-31 23:01:24,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:01:24,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:01:24,300 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 23:01:24,307 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 23:01:24,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:01:24,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:01:24,339 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:01:24,339 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2022-01-31 23:01:24,340 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2022-01-31 23:01:24,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2f [2022-01-31 23:01:24,340 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:01:24,341 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:01:24,341 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:01:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:01:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:01:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-01-31 23:01:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2022-01-31 23:01:24,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 23:01:24,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-01-31 23:01:24,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:01:24,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:01:24,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:01:24,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-01-31 23:01:24,345 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2022-01-31 23:01:24,345 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2f [2022-01-31 23:01:24,345 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:01:24,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:01:24,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:01:24,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-01-31 23:01:24,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:01:24,460 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:01:24,462 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:01:24,855 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:01:24,860 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:01:24,860 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-01-31 23:01:24,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:01:24 BoogieIcfgContainer [2022-01-31 23:01:24,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:01:24,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:01:24,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:01:24,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:01:24,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:01:23" (1/3) ... [2022-01-31 23:01:24,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a29d5f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:01:24, skipping insertion in model container [2022-01-31 23:01:24,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:24" (2/3) ... [2022-01-31 23:01:24,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a29d5f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:01:24, skipping insertion in model container [2022-01-31 23:01:24,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:01:24" (3/3) ... [2022-01-31 23:01:24,870 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0663a.c [2022-01-31 23:01:24,878 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:01:24,878 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 23:01:24,923 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:01:24,928 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 23:01:24,928 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 23:01:24,943 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 87 states have (on average 1.632183908045977) internal successors, (142), 88 states have internal predecessors, (142), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 23:01:24,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-31 23:01:24,949 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:01:24,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:01:24,950 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:01:24,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:01:24,954 INFO L85 PathProgramCache]: Analyzing trace with hash 164563379, now seen corresponding path program 1 times [2022-01-31 23:01:24,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:01:24,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466809486] [2022-01-31 23:01:24,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:01:24,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:01:25,005 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:01:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:25,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:01:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:25,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 23:01:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:25,223 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 23:01:25,224 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:01:25,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466809486] [2022-01-31 23:01:25,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1466809486] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:01:25,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:01:25,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 23:01:25,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6066425] [2022-01-31 23:01:25,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:01:25,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 23:01:25,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:01:25,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 23:01:25,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 23:01:25,254 INFO L87 Difference]: Start difference. First operand has 101 states, 87 states have (on average 1.632183908045977) internal successors, (142), 88 states have internal predecessors, (142), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 23:01:25,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:01:25,616 INFO L93 Difference]: Finished difference Result 196 states and 309 transitions. [2022-01-31 23:01:25,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 23:01:25,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-01-31 23:01:25,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:01:25,626 INFO L225 Difference]: With dead ends: 196 [2022-01-31 23:01:25,626 INFO L226 Difference]: Without dead ends: 96 [2022-01-31 23:01:25,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 23:01:25,636 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 132 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:01:25,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 133 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:01:25,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-01-31 23:01:25,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2022-01-31 23:01:25,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 84 states have (on average 1.4523809523809523) internal successors, (122), 84 states have internal predecessors, (122), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 23:01:25,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 135 transitions. [2022-01-31 23:01:25,707 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 135 transitions. Word has length 19 [2022-01-31 23:01:25,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:01:25,707 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 135 transitions. [2022-01-31 23:01:25,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 23:01:25,708 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 135 transitions. [2022-01-31 23:01:25,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-31 23:01:25,709 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:01:25,709 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] [2022-01-31 23:01:25,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:01:25,710 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:01:25,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:01:25,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1266781412, now seen corresponding path program 1 times [2022-01-31 23:01:25,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:01:25,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113946703] [2022-01-31 23:01:25,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:01:25,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:01:25,718 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:01:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 23:01:25,811 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 23:01:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 23:01:25,879 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-01-31 23:01:25,879 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 23:01:25,881 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 23:01:25,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:01:25,885 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 23:01:25,887 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 23:01:25,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:01:25 BoogieIcfgContainer [2022-01-31 23:01:25,899 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 23:01:25,900 INFO L158 Benchmark]: Toolchain (without parser) took 2122.90ms. Allocated memory was 190.8MB in the beginning and 269.5MB in the end (delta: 78.6MB). Free memory was 136.6MB in the beginning and 137.4MB in the end (delta: -765.9kB). Peak memory consumption was 77.8MB. Max. memory is 8.0GB. [2022-01-31 23:01:25,901 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 190.8MB. Free memory is still 153.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:01:25,901 INFO L158 Benchmark]: CACSL2BoogieTranslator took 407.95ms. Allocated memory was 190.8MB in the beginning and 269.5MB in the end (delta: 78.6MB). Free memory was 136.4MB in the beginning and 238.1MB in the end (delta: -101.6MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. [2022-01-31 23:01:25,902 INFO L158 Benchmark]: Boogie Preprocessor took 77.94ms. Allocated memory is still 269.5MB. Free memory was 238.1MB in the beginning and 235.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 23:01:25,902 INFO L158 Benchmark]: RCFGBuilder took 595.94ms. Allocated memory is still 269.5MB. Free memory was 234.9MB in the beginning and 213.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2022-01-31 23:01:25,902 INFO L158 Benchmark]: TraceAbstraction took 1036.57ms. Allocated memory is still 269.5MB. Free memory was 213.4MB in the beginning and 137.4MB in the end (delta: 76.0MB). Peak memory consumption was 76.5MB. Max. memory is 8.0GB. [2022-01-31 23:01:25,904 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 190.8MB. Free memory is still 153.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 407.95ms. Allocated memory was 190.8MB in the beginning and 269.5MB in the end (delta: 78.6MB). Free memory was 136.4MB in the beginning and 238.1MB in the end (delta: -101.6MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 77.94ms. Allocated memory is still 269.5MB. Free memory was 238.1MB in the beginning and 235.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 595.94ms. Allocated memory is still 269.5MB. Free memory was 234.9MB in the beginning and 213.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1036.57ms. Allocated memory is still 269.5MB. Free memory was 213.4MB in the beginning and 137.4MB in the end (delta: 76.0MB). Peak memory consumption was 76.5MB. 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: 231]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 230, overapproximation of someUnaryDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 135, overapproximation of someUnaryFLOAToperation at line 218, overapproximation of someBinaryArithmeticFLOAToperation at line 137. Possible FailurePath: [L29-L34] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L36-L41] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L43-L47] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L49-L51] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L117-L118] static const float tiny_atan2 = 1.0e-30, zero_atan2 = 0.0, pi_lo_atan2 = -8.7422776573e-08; [L218] float x = -0.0f; [L219] float y = __VERIFIER_nondet_float(); [L226] COND TRUE y > 0.0f [L227] CALL, EXPR __ieee754_atan2f(y, x) [L121] float z; [L122] __int32_t k, m, hx, hy, ix, iy; [L125] ieee_float_shape_type gf_u; [L126] gf_u.value = (x) [L127] EXPR gf_u.word [L127] (hx) = gf_u.word [L129] ix = hx & 0x7fffffff [L131] ieee_float_shape_type gf_u; [L132] gf_u.value = (y) [L133] EXPR gf_u.word [L133] (hy) = gf_u.word [L135] iy = hy & 0x7fffffff [L136] COND TRUE ((ix) > 0x7f800000L) || ((iy) > 0x7f800000L) [L137] return x + y; [L227] RET, EXPR __ieee754_atan2f(y, x) [L227] float res = __ieee754_atan2f(y, x); [L230] COND TRUE res != pi_o_2 [L231] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 104 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 136 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 132 mSDsluCounter, 133 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 139 IncrementalHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 131 mSDtfsCounter, 139 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s 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 [2022-01-31 23:01:25,939 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...