/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_1032b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 23:02:22,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:02:22,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:02:22,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 23:02:22,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 23:02:22,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 23:02:22,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 23:02:22,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 23:02:22,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 23:02:22,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 23:02:22,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 23:02:22,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 23:02:22,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 23:02:22,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 23:02:22,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 23:02:22,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 23:02:22,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 23:02:22,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:02:22,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:02:22,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:02:22,232 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 23:02:22,245 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:02:22,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:02:22,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:02:22,247 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 23:02:22,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:02:22,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 23:02:22,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:02:22,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:02:22,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:02:22,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:02:22,248 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 23:02:22,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:02:22,248 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:02:22,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:02:22,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:02:22,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:02:22,249 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:02:22,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:02:22,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:02:22,249 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:02:22,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:02:22,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:02:22,249 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 23:02:22,249 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:02:22,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:02:22,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:02:22,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:02:22,467 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:02:22,468 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:02:22,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1032b.c [2022-01-31 23:02:22,526 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b689d363b/f0435f76f9714f3ba4f82f12d67af7de/FLAG8bb6d1f5c [2022-01-31 23:02:22,891 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:02:22,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1032b.c [2022-01-31 23:02:22,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b689d363b/f0435f76f9714f3ba4f82f12d67af7de/FLAG8bb6d1f5c [2022-01-31 23:02:22,913 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b689d363b/f0435f76f9714f3ba4f82f12d67af7de [2022-01-31 23:02:22,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:02:22,917 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:02:22,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:02:22,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:02:22,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:02:22,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:02:22" (1/1) ... [2022-01-31 23:02:22,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cb29c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:22, skipping insertion in model container [2022-01-31 23:02:22,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:02:22" (1/1) ... [2022-01-31 23:02:22,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:02:22,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:02:23,119 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_1032b.c[1753,1766] [2022-01-31 23:02:23,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:02:23,129 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:02:23,159 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_1032b.c[1753,1766] [2022-01-31 23:02:23,160 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:02:23,169 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:02:23,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:23 WrapperNode [2022-01-31 23:02:23,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:02:23,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:02:23,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:02:23,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:02:23,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:23" (1/1) ... [2022-01-31 23:02:23,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:23" (1/1) ... [2022-01-31 23:02:23,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:23" (1/1) ... [2022-01-31 23:02:23,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:23" (1/1) ... [2022-01-31 23:02:23,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:23" (1/1) ... [2022-01-31 23:02:23,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:23" (1/1) ... [2022-01-31 23:02:23,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:23" (1/1) ... [2022-01-31 23:02:23,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:02:23,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:02:23,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:02:23,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:02:23,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:23" (1/1) ... [2022-01-31 23:02:23,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:02:23,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:02:23,246 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 23:02:23,265 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 23:02:23,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:02:23,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:02:23,279 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:02:23,279 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2022-01-31 23:02:23,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2022-01-31 23:02:23,280 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:02:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:02:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:02:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:02:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:02:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-01-31 23:02:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2022-01-31 23:02:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 23:02:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-01-31 23:02:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:02:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:02:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:02:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-01-31 23:02:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2022-01-31 23:02:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:02:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:02:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:02:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:02:23,343 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:02:23,344 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:02:23,445 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:02:23,449 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:02:23,449 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-01-31 23:02:23,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:02:23 BoogieIcfgContainer [2022-01-31 23:02:23,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:02:23,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:02:23,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:02:23,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:02:23,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:02:22" (1/3) ... [2022-01-31 23:02:23,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0791ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:02:23, skipping insertion in model container [2022-01-31 23:02:23,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:23" (2/3) ... [2022-01-31 23:02:23,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0791ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:02:23, skipping insertion in model container [2022-01-31 23:02:23,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:02:23" (3/3) ... [2022-01-31 23:02:23,456 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032b.c [2022-01-31 23:02:23,459 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:02:23,460 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 23:02:23,497 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:02:23,501 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 23:02:23,502 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 23:02:23,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 28 states have (on average 1.5) internal successors, (42), 29 states have internal predecessors, (42), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 23:02:23,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-31 23:02:23,517 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:02:23,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:02:23,518 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:02:23,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:02:23,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1895925948, now seen corresponding path program 1 times [2022-01-31 23:02:23,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:02:23,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114603650] [2022-01-31 23:02:23,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:02:23,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:02:23,567 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:02:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:23,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:02:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:23,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:02:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:23,727 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 23:02:23,728 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:02:23,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114603650] [2022-01-31 23:02:23,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2114603650] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:02:23,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:02:23,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 23:02:23,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059717577] [2022-01-31 23:02:23,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:02:23,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 23:02:23,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:02:23,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 23:02:23,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 23:02:23,761 INFO L87 Difference]: Start difference. First operand has 38 states, 28 states have (on average 1.5) internal successors, (42), 29 states have internal predecessors, (42), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 2 states have internal predecessors, (13), 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 23:02:23,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:02:23,906 INFO L93 Difference]: Finished difference Result 68 states and 93 transitions. [2022-01-31 23:02:23,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 23:02:23,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 2 states have internal predecessors, (13), 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 18 [2022-01-31 23:02:23,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:02:23,914 INFO L225 Difference]: With dead ends: 68 [2022-01-31 23:02:23,914 INFO L226 Difference]: Without dead ends: 34 [2022-01-31 23:02:23,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 23:02:23,922 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 34 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:02:23,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 40 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 23:02:23,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-01-31 23:02:23,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-01-31 23:02:23,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 23:02:23,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2022-01-31 23:02:23,957 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 18 [2022-01-31 23:02:23,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:02:23,957 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2022-01-31 23:02:23,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 2 states have internal predecessors, (13), 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 23:02:23,958 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-01-31 23:02:23,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-31 23:02:23,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:02:23,959 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 23:02:23,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:02:23,959 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:02:23,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:02:23,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1953077347, now seen corresponding path program 1 times [2022-01-31 23:02:23,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:02:23,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002795678] [2022-01-31 23:02:23,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:02:23,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:02:23,962 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:02:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 23:02:23,991 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 23:02:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 23:02:24,020 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-01-31 23:02:24,020 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 23:02:24,022 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 23:02:24,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:02:24,026 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 23:02:24,028 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 23:02:24,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:02:24 BoogieIcfgContainer [2022-01-31 23:02:24,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 23:02:24,042 INFO L158 Benchmark]: Toolchain (without parser) took 1125.27ms. Allocated memory was 178.3MB in the beginning and 231.7MB in the end (delta: 53.5MB). Free memory was 121.1MB in the beginning and 155.7MB in the end (delta: -34.7MB). Peak memory consumption was 19.8MB. Max. memory is 8.0GB. [2022-01-31 23:02:24,043 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 178.3MB. Free memory is still 138.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:02:24,044 INFO L158 Benchmark]: CACSL2BoogieTranslator took 250.35ms. Allocated memory was 178.3MB in the beginning and 231.7MB in the end (delta: 53.5MB). Free memory was 120.9MB in the beginning and 205.0MB in the end (delta: -84.1MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. [2022-01-31 23:02:24,046 INFO L158 Benchmark]: Boogie Preprocessor took 46.14ms. Allocated memory is still 231.7MB. Free memory was 205.0MB in the beginning and 203.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 23:02:24,048 INFO L158 Benchmark]: RCFGBuilder took 233.18ms. Allocated memory is still 231.7MB. Free memory was 203.4MB in the beginning and 190.3MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-31 23:02:24,048 INFO L158 Benchmark]: TraceAbstraction took 589.92ms. Allocated memory is still 231.7MB. Free memory was 189.8MB in the beginning and 155.7MB in the end (delta: 34.1MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2022-01-31 23:02:24,053 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 178.3MB. Free memory is still 138.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 250.35ms. Allocated memory was 178.3MB in the beginning and 231.7MB in the end (delta: 53.5MB). Free memory was 120.9MB in the beginning and 205.0MB in the end (delta: -84.1MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.14ms. Allocated memory is still 231.7MB. Free memory was 205.0MB in the beginning and 203.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 233.18ms. Allocated memory is still 231.7MB. Free memory was 203.4MB in the beginning and 190.3MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 589.92ms. Allocated memory is still 231.7MB. Free memory was 189.8MB in the beginning and 155.7MB in the end (delta: 34.1MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 82]: 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 81, overapproximation of bitwiseAnd at line 25, overapproximation of someUnaryFLOAToperation at line 77, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L77] float x = -0.0f; [L78] CALL, EXPR round_float(x) [L15] __uint32_t w; [L17] int exponent_less_127; [L20] ieee_float_shape_type gf_u; [L21] gf_u.value = (x) [L22] EXPR gf_u.word [L22] (w) = gf_u.word [L25] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 [L27] COND FALSE !(exponent_less_127 < 23) [L43] COND TRUE exponent_less_127 == 128 [L45] return x + x; [L78] RET, EXPR round_float(x) [L78] float res = round_float(x); [L81] EXPR res == -0.0f && __signbit_float(res) == 1 [L81] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L82] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42 IncrementalHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 38 mSDtfsCounter, 42 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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 [2022-01-31 23:02:24,078 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...