/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-newlib/float_req_bl_1270a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:21:07,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:21:07,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:21:07,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-01 00:21:07,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-01 00:21:07,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-01 00:21:07,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-01 00:21:07,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-01 00:21:07,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-01 00:21:07,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-01 00:21:07,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-01 00:21:07,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-01 00:21:07,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-01 00:21:07,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-01 00:21:07,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-01 00:21:07,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-01 00:21:07,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-01 00:21:07,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:21:07,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:21:07,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:21:07,248 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 00:21:07,253 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:21:07,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:21:07,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:21:07,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:21:07,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:21:07,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:21:07,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:21:07,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:21:07,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:21:07,255 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:21:07,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:21:07,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:21:07,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:21:07,256 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:21:07,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:21:07,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:21:07,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:21:07,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:21:07,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:21:07,257 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:21:07,257 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:21:07,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:21:07,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:21:07,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:21:07,468 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:21:07,468 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:21:07,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1270a.c [2022-02-01 00:21:07,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac8c62fea/a8c63b4001d9440fb4f6bcf10255743b/FLAGad43a46a9 [2022-02-01 00:21:07,864 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:21:07,865 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1270a.c [2022-02-01 00:21:07,872 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac8c62fea/a8c63b4001d9440fb4f6bcf10255743b/FLAGad43a46a9 [2022-02-01 00:21:07,886 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac8c62fea/a8c63b4001d9440fb4f6bcf10255743b [2022-02-01 00:21:07,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:21:07,889 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:21:07,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:21:07,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:21:07,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:21:07,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:21:07" (1/1) ... [2022-02-01 00:21:07,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34ea815f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:07, skipping insertion in model container [2022-02-01 00:21:07,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:21:07" (1/1) ... [2022-02-01 00:21:07,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:21:07,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:21:08,152 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_1270a.c[4702,4715] [2022-02-01 00:21:08,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:21:08,158 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:21:08,212 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_1270a.c[4702,4715] [2022-02-01 00:21:08,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:21:08,221 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:21:08,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:08 WrapperNode [2022-02-01 00:21:08,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:21:08,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:21:08,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:21:08,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:21:08,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:08" (1/1) ... [2022-02-01 00:21:08,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:08" (1/1) ... [2022-02-01 00:21:08,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:08" (1/1) ... [2022-02-01 00:21:08,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:08" (1/1) ... [2022-02-01 00:21:08,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:08" (1/1) ... [2022-02-01 00:21:08,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:08" (1/1) ... [2022-02-01 00:21:08,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:08" (1/1) ... [2022-02-01 00:21:08,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:21:08,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:21:08,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:21:08,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:21:08,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:08" (1/1) ... [2022-02-01 00:21:08,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:21:08,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:21:08,312 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 00:21:08,318 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 00:21:08,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:21:08,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:21:08,336 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:21:08,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2022-02-01 00:21:08,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_hypotf [2022-02-01 00:21:08,337 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2022-02-01 00:21:08,337 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:21:08,337 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:21:08,337 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:21:08,337 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:21:08,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:21:08,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-02-01 00:21:08,338 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2022-02-01 00:21:08,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-01 00:21:08,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-02-01 00:21:08,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:21:08,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:21:08,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:21:08,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-02-01 00:21:08,341 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_hypotf [2022-02-01 00:21:08,341 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2022-02-01 00:21:08,341 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:21:08,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:21:08,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:21:08,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:21:08,407 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:21:08,408 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:21:08,775 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:21:08,785 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:21:08,785 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2022-02-01 00:21:08,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:21:08 BoogieIcfgContainer [2022-02-01 00:21:08,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:21:08,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:21:08,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:21:08,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:21:08,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:21:07" (1/3) ... [2022-02-01 00:21:08,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f5e641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:21:08, skipping insertion in model container [2022-02-01 00:21:08,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:08" (2/3) ... [2022-02-01 00:21:08,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f5e641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:21:08, skipping insertion in model container [2022-02-01 00:21:08,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:21:08" (3/3) ... [2022-02-01 00:21:08,796 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1270a.c [2022-02-01 00:21:08,801 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:21:08,802 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:21:08,839 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:21:08,846 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 00:21:08,846 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:21:08,860 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 89 states have (on average 1.651685393258427) internal successors, (147), 90 states have internal predecessors, (147), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-01 00:21:08,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-01 00:21:08,869 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:21:08,869 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, 1, 1, 1, 1, 1] [2022-02-01 00:21:08,870 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:21:08,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:21:08,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1772598028, now seen corresponding path program 1 times [2022-02-01 00:21:08,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:21:08,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72205968] [2022-02-01 00:21:08,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:21:08,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:21:08,931 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:21:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:21:09,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:21:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:21:09,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-01 00:21:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:21:09,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-01 00:21:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:21:09,079 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 00:21:09,080 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:21:09,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72205968] [2022-02-01 00:21:09,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [72205968] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:21:09,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:21:09,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-01 00:21:09,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961986525] [2022-02-01 00:21:09,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:21:09,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-01 00:21:09,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:21:09,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-01 00:21:09,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-01 00:21:09,105 INFO L87 Difference]: Start difference. First operand has 102 states, 89 states have (on average 1.651685393258427) internal successors, (147), 90 states have internal predecessors, (147), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-01 00:21:09,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:21:09,362 INFO L93 Difference]: Finished difference Result 196 states and 313 transitions. [2022-02-01 00:21:09,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-01 00:21:09,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2022-02-01 00:21:09,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:21:09,369 INFO L225 Difference]: With dead ends: 196 [2022-02-01 00:21:09,369 INFO L226 Difference]: Without dead ends: 98 [2022-02-01 00:21:09,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-01 00:21:09,374 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 111 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-01 00:21:09,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 118 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-01 00:21:09,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-02-01 00:21:09,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-02-01 00:21:09,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 87 states have (on average 1.2528735632183907) internal successors, (109), 87 states have internal predecessors, (109), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-01 00:21:09,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 120 transitions. [2022-02-01 00:21:09,407 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 120 transitions. Word has length 28 [2022-02-01 00:21:09,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:21:09,407 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 120 transitions. [2022-02-01 00:21:09,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-01 00:21:09,408 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 120 transitions. [2022-02-01 00:21:09,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-01 00:21:09,408 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:21:09,409 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:21:09,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:21:09,409 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:21:09,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:21:09,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1334305327, now seen corresponding path program 1 times [2022-02-01 00:21:09,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:21:09,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862520383] [2022-02-01 00:21:09,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:21:09,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:21:09,412 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:21:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:21:09,489 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:21:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:21:09,591 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:21:09,592 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:21:09,597 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:21:09,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:21:09,601 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:21:09,602 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:21:09,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:21:09 BoogieIcfgContainer [2022-02-01 00:21:09,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:21:09,619 INFO L158 Benchmark]: Toolchain (without parser) took 1729.44ms. Allocated memory was 198.2MB in the beginning and 276.8MB in the end (delta: 78.6MB). Free memory was 141.7MB in the beginning and 162.6MB in the end (delta: -21.0MB). Peak memory consumption was 58.1MB. Max. memory is 8.0GB. [2022-02-01 00:21:09,619 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 198.2MB. Free memory is still 158.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:21:09,620 INFO L158 Benchmark]: CACSL2BoogieTranslator took 322.01ms. Allocated memory was 198.2MB in the beginning and 276.8MB in the end (delta: 78.6MB). Free memory was 141.5MB in the beginning and 244.9MB in the end (delta: -103.5MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB. [2022-02-01 00:21:09,622 INFO L158 Benchmark]: Boogie Preprocessor took 56.69ms. Allocated memory is still 276.8MB. Free memory was 244.9MB in the beginning and 242.3MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-02-01 00:21:09,624 INFO L158 Benchmark]: RCFGBuilder took 507.46ms. Allocated memory is still 276.8MB. Free memory was 242.3MB in the beginning and 218.7MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-02-01 00:21:09,624 INFO L158 Benchmark]: TraceAbstraction took 829.91ms. Allocated memory is still 276.8MB. Free memory was 218.2MB in the beginning and 162.6MB in the end (delta: 55.6MB). Peak memory consumption was 55.6MB. Max. memory is 8.0GB. [2022-02-01 00:21:09,628 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 198.2MB. Free memory is still 158.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 322.01ms. Allocated memory was 198.2MB in the beginning and 276.8MB in the end (delta: 78.6MB). Free memory was 141.5MB in the beginning and 244.9MB in the end (delta: -103.5MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 56.69ms. Allocated memory is still 276.8MB. Free memory was 244.9MB in the beginning and 242.3MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 507.46ms. Allocated memory is still 276.8MB. Free memory was 242.3MB in the beginning and 218.7MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 829.91ms. Allocated memory is still 276.8MB. Free memory was 218.2MB in the beginning and 162.6MB in the end (delta: 55.6MB). Peak memory consumption was 55.6MB. 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: 236]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 120, overapproximation of bitwiseAnd at line 220. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L231] float x = 1.0f / 0.0f; [L232] float y = __VERIFIER_nondet_float(); [L233] CALL, EXPR __ieee754_hypotf(x, y) [L84] float a = x, b = y, t1, t2, y1, y2, w; [L85] __int32_t j, k, ha, hb; [L88] ieee_float_shape_type gf_u; [L89] gf_u.value = (x) [L90] EXPR gf_u.word [L90] (ha) = gf_u.word [L92] ha &= 0x7fffffffL [L94] ieee_float_shape_type gf_u; [L95] gf_u.value = (y) [L96] EXPR gf_u.word [L96] (hb) = gf_u.word [L98] hb &= 0x7fffffffL [L99] COND FALSE !(hb > ha) [L106] a = x [L107] b = y [L110] ieee_float_shape_type sf_u; [L111] sf_u.word = (ha) [L112] EXPR sf_u.value [L112] (a) = sf_u.value [L115] ieee_float_shape_type sf_u; [L116] sf_u.word = (hb) [L117] EXPR sf_u.value [L117] (b) = sf_u.value [L119] COND TRUE (ha - hb) > 0xf000000L [L120] return a + b; [L233] RET, EXPR __ieee754_hypotf(x, y) [L233] float res = __ieee754_hypotf(x, y); [L235] CALL, EXPR isinf_float(res) [L214] __int32_t ix; [L216] ieee_float_shape_type gf_u; [L217] gf_u.value = (x) [L218] EXPR gf_u.word [L218] (ix) = gf_u.word [L220] ix &= 0x7fffffff [L221] return ((ix) == 0x7f800000L); [L235] RET, EXPR isinf_float(res) [L235] COND TRUE !isinf_float(res) [L236] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 105 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, 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, 114 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 111 mSDsluCounter, 118 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 123 IncrementalHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 116 mSDtfsCounter, 123 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred 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: 0.0s 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 00:21:09,654 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...