/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_0931.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 23:02:11,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:02:11,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:02:11,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 23:02:11,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 23:02:11,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 23:02:11,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 23:02:11,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 23:02:11,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 23:02:11,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 23:02:11,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 23:02:11,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 23:02:11,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 23:02:11,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 23:02:11,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 23:02:11,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 23:02:11,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 23:02:11,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:02:11,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:02:11,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:02:11,166 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 23:02:11,176 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:02:11,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:02:11,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:02:11,177 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 23:02:11,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:02:11,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 23:02:11,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:02:11,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:02:11,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:02:11,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:02:11,179 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 23:02:11,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:02:11,179 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:02:11,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:02:11,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:02:11,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:02:11,180 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:02:11,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:02:11,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:02:11,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:02:11,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:02:11,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:02:11,184 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 23:02:11,184 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:02:11,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:02:11,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:02:11,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:02:11,395 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:02:11,395 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:02:11,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0931.c [2022-01-31 23:02:11,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d7072347/59b30957e1e248e39358eadb4cf8069d/FLAG50c5c2eb0 [2022-01-31 23:02:11,811 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:02:11,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0931.c [2022-01-31 23:02:11,815 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d7072347/59b30957e1e248e39358eadb4cf8069d/FLAG50c5c2eb0 [2022-01-31 23:02:11,823 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d7072347/59b30957e1e248e39358eadb4cf8069d [2022-01-31 23:02:11,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:02:11,826 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:02:11,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:02:11,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:02:11,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:02:11,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:02:11" (1/1) ... [2022-01-31 23:02:11,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7597322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:11, skipping insertion in model container [2022-01-31 23:02:11,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:02:11" (1/1) ... [2022-01-31 23:02:11,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:02:11,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:02:11,989 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_0931.c[3146,3159] [2022-01-31 23:02:11,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:02:11,996 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:02:12,014 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_0931.c[3146,3159] [2022-01-31 23:02:12,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:02:12,023 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:02:12,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:12 WrapperNode [2022-01-31 23:02:12,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:02:12,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:02:12,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:02:12,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:02:12,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:12" (1/1) ... [2022-01-31 23:02:12,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:12" (1/1) ... [2022-01-31 23:02:12,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:12" (1/1) ... [2022-01-31 23:02:12,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:12" (1/1) ... [2022-01-31 23:02:12,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:12" (1/1) ... [2022-01-31 23:02:12,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:12" (1/1) ... [2022-01-31 23:02:12,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:12" (1/1) ... [2022-01-31 23:02:12,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:02:12,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:02:12,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:02:12,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:02:12,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:12" (1/1) ... [2022-01-31 23:02:12,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:02:12,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:02:12,089 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 23:02:12,095 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 23:02:12,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:02:12,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:02:12,112 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:02:12,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_logf [2022-01-31 23:02:12,112 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2022-01-31 23:02:12,112 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:02:12,112 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:02:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:02:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:02:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:02:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-01-31 23:02:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_logf [2022-01-31 23:02:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 23:02:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-01-31 23:02:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:02:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:02:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:02:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-01-31 23:02:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2022-01-31 23:02:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:02:12,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:02:12,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:02:12,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:02:12,167 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:02:12,168 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:02:12,304 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:02:12,308 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:02:12,309 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-01-31 23:02:12,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:02:12 BoogieIcfgContainer [2022-01-31 23:02:12,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:02:12,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:02:12,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:02:12,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:02:12,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:02:11" (1/3) ... [2022-01-31 23:02:12,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b38cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:02:12, skipping insertion in model container [2022-01-31 23:02:12,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:12" (2/3) ... [2022-01-31 23:02:12,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b38cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:02:12, skipping insertion in model container [2022-01-31 23:02:12,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:02:12" (3/3) ... [2022-01-31 23:02:12,343 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0931.c [2022-01-31 23:02:12,346 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:02:12,347 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 23:02:12,409 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:02:12,420 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 23:02:12,421 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 23:02:12,430 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 37 states have internal predecessors, (57), 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 23:02:12,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-31 23:02:12,435 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:02:12,435 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:02:12,436 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:02:12,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:02:12,439 INFO L85 PathProgramCache]: Analyzing trace with hash -627760362, now seen corresponding path program 1 times [2022-01-31 23:02:12,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:02:12,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006981225] [2022-01-31 23:02:12,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:02:12,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:02:12,485 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:02:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:12,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:02:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:12,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:02:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:12,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-31 23:02:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:12,650 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 23:02:12,651 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:02:12,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006981225] [2022-01-31 23:02:12,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2006981225] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:02:12,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:02:12,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 23:02:12,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926599473] [2022-01-31 23:02:12,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:02:12,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 23:02:12,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:02:12,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 23:02:12,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 23:02:12,674 INFO L87 Difference]: Start difference. First operand has 46 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 37 states have internal predecessors, (57), 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 4.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2022-01-31 23:02:12,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:02:12,850 INFO L93 Difference]: Finished difference Result 84 states and 123 transitions. [2022-01-31 23:02:12,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 23:02:12,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 2 states have internal predecessors, (16), 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 23 [2022-01-31 23:02:12,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:02:12,859 INFO L225 Difference]: With dead ends: 84 [2022-01-31 23:02:12,860 INFO L226 Difference]: Without dead ends: 42 [2022-01-31 23:02:12,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 23:02:12,865 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 47 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:02:12,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 52 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 23:02:12,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-01-31 23:02:12,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-01-31 23:02:12,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 states have internal predecessors, (45), 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 23:02:12,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2022-01-31 23:02:12,903 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 23 [2022-01-31 23:02:12,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:02:12,903 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2022-01-31 23:02:12,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2022-01-31 23:02:12,904 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2022-01-31 23:02:12,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-31 23:02:12,906 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:02:12,906 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] [2022-01-31 23:02:12,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:02:12,907 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:02:12,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:02:12,909 INFO L85 PathProgramCache]: Analyzing trace with hash -435190031, now seen corresponding path program 1 times [2022-01-31 23:02:12,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:02:12,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870206642] [2022-01-31 23:02:12,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:02:12,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:02:12,915 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:02:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 23:02:12,988 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 23:02:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 23:02:13,023 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-01-31 23:02:13,024 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 23:02:13,026 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 23:02:13,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:02:13,029 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 23:02:13,031 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 23:02:13,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:02:13 BoogieIcfgContainer [2022-01-31 23:02:13,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 23:02:13,039 INFO L158 Benchmark]: Toolchain (without parser) took 1213.41ms. Allocated memory was 169.9MB in the beginning and 204.5MB in the end (delta: 34.6MB). Free memory was 119.7MB in the beginning and 174.7MB in the end (delta: -55.0MB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:02:13,040 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 169.9MB. Free memory is still 136.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:02:13,040 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.13ms. Allocated memory is still 169.9MB. Free memory was 119.4MB in the beginning and 143.1MB in the end (delta: -23.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-31 23:02:13,040 INFO L158 Benchmark]: Boogie Preprocessor took 35.20ms. Allocated memory is still 169.9MB. Free memory was 143.1MB in the beginning and 141.4MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 23:02:13,041 INFO L158 Benchmark]: RCFGBuilder took 257.42ms. Allocated memory is still 169.9MB. Free memory was 141.4MB in the beginning and 127.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-01-31 23:02:13,041 INFO L158 Benchmark]: TraceAbstraction took 720.54ms. Allocated memory was 169.9MB in the beginning and 204.5MB in the end (delta: 34.6MB). Free memory was 127.1MB in the beginning and 174.7MB in the end (delta: -47.7MB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:02:13,042 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 169.9MB. Free memory is still 136.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 197.13ms. Allocated memory is still 169.9MB. Free memory was 119.4MB in the beginning and 143.1MB in the end (delta: -23.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.20ms. Allocated memory is still 169.9MB. Free memory was 143.1MB in the beginning and 141.4MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 257.42ms. Allocated memory is still 169.9MB. Free memory was 141.4MB in the beginning and 127.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 720.54ms. Allocated memory was 169.9MB in the beginning and 204.5MB in the end (delta: 34.6MB). Free memory was 127.1MB in the beginning and 174.7MB in the end (delta: -47.7MB). There was no memory consumed. 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: 123]: 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 34, overapproximation of bitwiseAnd at line 108. Possible FailurePath: [L14-L18] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L20] static const float zero_log = 0.0; [L118] float x = 1.0f / 0.0f; [L119] CALL, EXPR __ieee754_logf(x) [L23] float hfsq, f, s, z, R, w, t1, t2, dk; [L24] __int32_t k, ix, i, j; [L27] ieee_float_shape_type gf_u; [L28] gf_u.value = (x) [L29] EXPR gf_u.word [L29] (ix) = gf_u.word [L32] k = 0 [L33] COND TRUE ((ix & 0x7fffffff) == 0) [L34] return -two25_log / zero_log; [L119] RET, EXPR __ieee754_logf(x) [L119] float res = __ieee754_logf(x); [L122] CALL, EXPR isinf_float(res) [L102] __int32_t ix; [L104] ieee_float_shape_type gf_u; [L105] gf_u.value = (x) [L106] EXPR gf_u.word [L106] (ix) = gf_u.word [L108] ix &= 0x7fffffff [L109] return ((ix) == 0x7f800000L); [L122] RET, EXPR isinf_float(res) [L122] COND TRUE !isinf_float(res) [L123] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, 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, 48 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 47 mSDsluCounter, 52 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56 IncrementalHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 50 mSDtfsCounter, 56 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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 23:02:13,066 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...