/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/double_req_bl_1121b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:19:14,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:19:14,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:19:14,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-01 00:19:14,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-01 00:19:14,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-01 00:19:14,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-01 00:19:14,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-01 00:19:14,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-01 00:19:14,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-01 00:19:14,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-01 00:19:14,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-01 00:19:14,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-01 00:19:14,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-01 00:19:14,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-01 00:19:14,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-01 00:19:14,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-01 00:19:14,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:19:14,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:19:14,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:19:14,382 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 00:19:14,390 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:19:14,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:19:14,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:19:14,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:19:14,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:19:14,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:19:14,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:19:14,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:19:14,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:19:14,392 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:19:14,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:19:14,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:19:14,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:19:14,392 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:19:14,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:19:14,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:19:14,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:19:14,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:19:14,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:19:14,393 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:19:14,393 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:19:14,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:19:14,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:19:14,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:19:14,565 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:19:14,565 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:19:14,566 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1121b.c [2022-02-01 00:19:14,605 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ade4f7e0/f558787a38d44049840cf2bce5508b35/FLAG5d9b8f70b [2022-02-01 00:19:14,952 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:19:14,952 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1121b.c [2022-02-01 00:19:14,961 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ade4f7e0/f558787a38d44049840cf2bce5508b35/FLAG5d9b8f70b [2022-02-01 00:19:14,970 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ade4f7e0/f558787a38d44049840cf2bce5508b35 [2022-02-01 00:19:14,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:19:14,972 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:19:14,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:19:14,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:19:14,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:19:14,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:19:14" (1/1) ... [2022-02-01 00:19:14,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@378c5476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:14, skipping insertion in model container [2022-02-01 00:19:14,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:19:14" (1/1) ... [2022-02-01 00:19:14,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:19:15,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:19:15,200 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/double_req_bl_1121b.c[3884,3897] [2022-02-01 00:19:15,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:19:15,213 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:19:15,241 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/double_req_bl_1121b.c[3884,3897] [2022-02-01 00:19:15,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:19:15,254 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:19:15,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:15 WrapperNode [2022-02-01 00:19:15,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:19:15,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:19:15,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:19:15,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:19:15,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:15" (1/1) ... [2022-02-01 00:19:15,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:15" (1/1) ... [2022-02-01 00:19:15,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:15" (1/1) ... [2022-02-01 00:19:15,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:15" (1/1) ... [2022-02-01 00:19:15,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:15" (1/1) ... [2022-02-01 00:19:15,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:15" (1/1) ... [2022-02-01 00:19:15,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:15" (1/1) ... [2022-02-01 00:19:15,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:19:15,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:19:15,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:19:15,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:19:15,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:15" (1/1) ... [2022-02-01 00:19:15,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:19:15,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:19:15,321 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 00:19:15,322 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 00:19:15,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:19:15,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:19:15,358 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:19:15,358 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2022-02-01 00:19:15,367 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2022-02-01 00:19:15,367 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:19:15,367 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:19:15,368 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:19:15,368 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:19:15,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:19:15,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-02-01 00:19:15,369 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2022-02-01 00:19:15,369 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2022-02-01 00:19:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-01 00:19:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-02-01 00:19:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:19:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:19:15,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-02-01 00:19:15,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:19:15,372 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:19:15,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:19:15,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:19:15,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-02-01 00:19:15,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:19:15,455 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:19:15,456 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:19:15,893 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:19:15,899 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:19:15,899 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-02-01 00:19:15,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:19:15 BoogieIcfgContainer [2022-02-01 00:19:15,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:19:15,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:19:15,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:19:15,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:19:15,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:19:14" (1/3) ... [2022-02-01 00:19:15,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23bf2915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:19:15, skipping insertion in model container [2022-02-01 00:19:15,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:15" (2/3) ... [2022-02-01 00:19:15,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23bf2915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:19:15, skipping insertion in model container [2022-02-01 00:19:15,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:19:15" (3/3) ... [2022-02-01 00:19:15,907 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121b.c [2022-02-01 00:19:15,910 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:19:15,910 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:19:15,952 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:19:15,957 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 00:19:15,957 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:19:15,976 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 58 states have (on average 1.7413793103448276) internal successors, (101), 59 states have internal predecessors, (101), 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) [2022-02-01 00:19:16,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-01 00:19:16,004 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:19:16,005 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] [2022-02-01 00:19:16,005 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:19:16,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:19:16,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1002246117, now seen corresponding path program 1 times [2022-02-01 00:19:16,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:19:16,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765521796] [2022-02-01 00:19:16,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:19:16,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:19:16,052 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:19:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:19:16,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:19:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:19:16,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-01 00:19:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:19:16,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-01 00:19:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:19:16,162 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 00:19:16,163 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:19:16,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765521796] [2022-02-01 00:19:16,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1765521796] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:19:16,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:19:16,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-01 00:19:16,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080947553] [2022-02-01 00:19:16,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:19:16,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-01 00:19:16,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:19:16,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-01 00:19:16,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-01 00:19:16,187 INFO L87 Difference]: Start difference. First operand has 68 states, 58 states have (on average 1.7413793103448276) internal successors, (101), 59 states have internal predecessors, (101), 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 3.75) internal successors, (15), 2 states have internal predecessors, (15), 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 00:19:16,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:19:16,400 INFO L93 Difference]: Finished difference Result 128 states and 210 transitions. [2022-02-01 00:19:16,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-01 00:19:16,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 2 states have internal predecessors, (15), 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 22 [2022-02-01 00:19:16,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:19:16,411 INFO L225 Difference]: With dead ends: 128 [2022-02-01 00:19:16,411 INFO L226 Difference]: Without dead ends: 64 [2022-02-01 00:19:16,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 00:19:16,418 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 87 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-01 00:19:16,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 89 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-01 00:19:16,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-02-01 00:19:16,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-02-01 00:19:16,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 56 states have internal predecessors, (83), 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) [2022-02-01 00:19:16,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2022-02-01 00:19:16,454 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 22 [2022-02-01 00:19:16,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:19:16,454 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2022-02-01 00:19:16,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 2 states have internal predecessors, (15), 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 00:19:16,455 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2022-02-01 00:19:16,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-01 00:19:16,456 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:19:16,456 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] [2022-02-01 00:19:16,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:19:16,457 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:19:16,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:19:16,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1368729192, now seen corresponding path program 1 times [2022-02-01 00:19:16,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:19:16,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152768457] [2022-02-01 00:19:16,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:19:16,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:19:16,461 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:19:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:19:16,498 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:19:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:19:16,544 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:19:16,544 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:19:16,546 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:19:16,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:19:16,549 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:19:16,554 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:19:16,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:19:16 BoogieIcfgContainer [2022-02-01 00:19:16,567 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:19:16,568 INFO L158 Benchmark]: Toolchain (without parser) took 1595.46ms. Allocated memory was 188.7MB in the beginning and 266.3MB in the end (delta: 77.6MB). Free memory was 134.0MB in the beginning and 165.7MB in the end (delta: -31.7MB). Peak memory consumption was 45.9MB. Max. memory is 8.0GB. [2022-02-01 00:19:16,569 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 150.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:19:16,570 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.57ms. Allocated memory was 188.7MB in the beginning and 266.3MB in the end (delta: 77.6MB). Free memory was 133.8MB in the beginning and 234.9MB in the end (delta: -101.2MB). Peak memory consumption was 9.3MB. Max. memory is 8.0GB. [2022-02-01 00:19:16,571 INFO L158 Benchmark]: Boogie Preprocessor took 40.86ms. Allocated memory is still 266.3MB. Free memory was 234.9MB in the beginning and 232.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-01 00:19:16,571 INFO L158 Benchmark]: RCFGBuilder took 604.32ms. Allocated memory is still 266.3MB. Free memory was 232.3MB in the beginning and 213.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-02-01 00:19:16,573 INFO L158 Benchmark]: TraceAbstraction took 665.22ms. Allocated memory is still 266.3MB. Free memory was 212.9MB in the beginning and 165.7MB in the end (delta: 47.2MB). Peak memory consumption was 47.2MB. Max. memory is 8.0GB. [2022-02-01 00:19:16,576 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 150.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 278.57ms. Allocated memory was 188.7MB in the beginning and 266.3MB in the end (delta: 77.6MB). Free memory was 133.8MB in the beginning and 234.9MB in the end (delta: -101.2MB). Peak memory consumption was 9.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.86ms. Allocated memory is still 266.3MB. Free memory was 234.9MB in the beginning and 232.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 604.32ms. Allocated memory is still 266.3MB. Free memory was 232.3MB in the beginning and 213.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 665.22ms. Allocated memory is still 266.3MB. Free memory was 212.9MB in the beginning and 165.7MB in the end (delta: 47.2MB). Peak memory consumption was 47.2MB. 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: 177]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 172, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L171] double x = __VERIFIER_nondet_double(); [L172] double y = -0.0; [L173] CALL, EXPR fmod_double(x, y) [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); [L173] RET, EXPR fmod_double(x, y) [L173] double res = fmod_double(x, y); [L176] CALL, EXPR isnan_double(res) [L18] return x != x; [L176] RET, EXPR isnan_double(res) [L176] COND TRUE !isnan_double(res) [L177] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, 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, 88 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 87 mSDsluCounter, 89 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 94 IncrementalHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 87 mSDtfsCounter, 94 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred 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 00:19:16,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...