/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0250a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:19:31,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:19:31,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:19:31,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-01 00:19:31,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-01 00:19:31,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-01 00:19:31,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-01 00:19:31,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-01 00:19:31,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-01 00:19:31,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-01 00:19:31,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-01 00:19:31,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-01 00:19:31,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-01 00:19:31,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-01 00:19:31,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-01 00:19:31,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-01 00:19:31,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-01 00:19:31,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:19:31,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:19:31,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:19:31,662 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 00:19:31,672 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:19:31,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:19:31,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:19:31,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:19:31,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:19:31,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:19:31,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:19:31,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:19:31,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:19:31,674 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:19:31,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:19:31,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:19:31,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:19:31,675 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:19:31,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:19:31,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:19:31,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:19:31,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:19:31,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:19:31,675 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:19:31,676 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:19:31,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:19:31,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:19:31,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:19:31,882 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:19:31,882 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:19:31,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0250a.c [2022-02-01 00:19:31,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e2b0e181/feadc2a3f89142ffa2364ca2f55121c6/FLAGd3b9dc752 [2022-02-01 00:19:32,314 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:19:32,314 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0250a.c [2022-02-01 00:19:32,323 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e2b0e181/feadc2a3f89142ffa2364ca2f55121c6/FLAGd3b9dc752 [2022-02-01 00:19:32,333 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e2b0e181/feadc2a3f89142ffa2364ca2f55121c6 [2022-02-01 00:19:32,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:19:32,336 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:19:32,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:19:32,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:19:32,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:19:32,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:19:32" (1/1) ... [2022-02-01 00:19:32,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33db99c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:32, skipping insertion in model container [2022-02-01 00:19:32,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:19:32" (1/1) ... [2022-02-01 00:19:32,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:19:32,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:19:32,560 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_0250a.c[5433,5446] [2022-02-01 00:19:32,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:19:32,566 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:19:32,591 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_0250a.c[5433,5446] [2022-02-01 00:19:32,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:19:32,600 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:19:32,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:32 WrapperNode [2022-02-01 00:19:32,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:19:32,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:19:32,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:19:32,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:19:32,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:32" (1/1) ... [2022-02-01 00:19:32,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:32" (1/1) ... [2022-02-01 00:19:32,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:32" (1/1) ... [2022-02-01 00:19:32,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:32" (1/1) ... [2022-02-01 00:19:32,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:32" (1/1) ... [2022-02-01 00:19:32,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:32" (1/1) ... [2022-02-01 00:19:32,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:32" (1/1) ... [2022-02-01 00:19:32,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:19:32,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:19:32,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:19:32,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:19:32,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:32" (1/1) ... [2022-02-01 00:19:32,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:19:32,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:19:32,676 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 00:19:32,710 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 00:19:32,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:19:32,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:19:32,724 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:19:32,724 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2022-02-01 00:19:32,724 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2022-02-01 00:19:32,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2022-02-01 00:19:32,725 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2022-02-01 00:19:32,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_asinf [2022-02-01 00:19:32,725 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:19:32,725 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:19:32,726 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:19:32,726 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:19:32,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:19:32,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-02-01 00:19:32,726 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2022-02-01 00:19:32,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-01 00:19:32,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-02-01 00:19:32,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:19:32,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:19:32,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:19:32,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-02-01 00:19:32,729 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2022-02-01 00:19:32,729 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2022-02-01 00:19:32,729 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2022-02-01 00:19:32,729 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_asinf [2022-02-01 00:19:32,729 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:19:32,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:19:32,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:19:32,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:19:32,825 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:19:32,831 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:19:33,049 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:19:33,054 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:19:33,054 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2022-02-01 00:19:33,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:19:33 BoogieIcfgContainer [2022-02-01 00:19:33,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:19:33,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:19:33,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:19:33,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:19:33,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:19:32" (1/3) ... [2022-02-01 00:19:33,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c76de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:19:33, skipping insertion in model container [2022-02-01 00:19:33,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:32" (2/3) ... [2022-02-01 00:19:33,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c76de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:19:33, skipping insertion in model container [2022-02-01 00:19:33,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:19:33" (3/3) ... [2022-02-01 00:19:33,065 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0250a.c [2022-02-01 00:19:33,068 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:19:33,068 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:19:33,092 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:19:33,096 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 00:19:33,096 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:19:33,106 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 62 states have (on average 1.5806451612903225) internal successors, (98), 63 states have internal predecessors, (98), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-01 00:19:33,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-01 00:19:33,116 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:19:33,117 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:19:33,117 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:19:33,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:19:33,121 INFO L85 PathProgramCache]: Analyzing trace with hash -2000061552, now seen corresponding path program 1 times [2022-02-01 00:19:33,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:19:33,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343570113] [2022-02-01 00:19:33,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:19:33,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:19:33,175 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:19:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:19:33,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:19:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:19:33,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-01 00:19:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:19:33,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-02-01 00:19:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:19:33,388 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 00:19:33,389 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:19:33,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343570113] [2022-02-01 00:19:33,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1343570113] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:19:33,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:19:33,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-01 00:19:33,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542919731] [2022-02-01 00:19:33,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:19:33,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-01 00:19:33,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:19:33,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-01 00:19:33,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-01 00:19:33,421 INFO L87 Difference]: Start difference. First operand has 76 states, 62 states have (on average 1.5806451612903225) internal successors, (98), 63 states have internal predecessors, (98), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 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 00:19:33,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:19:33,697 INFO L93 Difference]: Finished difference Result 144 states and 214 transitions. [2022-02-01 00:19:33,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-01 00:19:33,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 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 21 [2022-02-01 00:19:33,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:19:33,706 INFO L225 Difference]: With dead ends: 144 [2022-02-01 00:19:33,706 INFO L226 Difference]: Without dead ends: 72 [2022-02-01 00:19:33,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-01 00:19:33,711 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 82 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-01 00:19:33,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 87 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-01 00:19:33,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-02-01 00:19:33,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-02-01 00:19:33,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 60 states have (on average 1.3) internal successors, (78), 60 states have internal predecessors, (78), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-01 00:19:33,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2022-02-01 00:19:33,746 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 21 [2022-02-01 00:19:33,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:19:33,746 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2022-02-01 00:19:33,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 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 00:19:33,746 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2022-02-01 00:19:33,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-01 00:19:33,748 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:19:33,748 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 00:19:33,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:19:33,749 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:19:33,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:19:33,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1828033367, now seen corresponding path program 1 times [2022-02-01 00:19:33,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:19:33,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425277637] [2022-02-01 00:19:33,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:19:33,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:19:33,756 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:19:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:19:33,796 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:19:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:19:33,857 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:19:33,857 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:19:33,859 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:19:33,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:19:33,862 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:19:33,867 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:19:33,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:19:33 BoogieIcfgContainer [2022-02-01 00:19:33,878 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:19:33,879 INFO L158 Benchmark]: Toolchain (without parser) took 1542.64ms. Allocated memory is still 201.3MB. Free memory was 152.3MB in the beginning and 87.1MB in the end (delta: 65.2MB). Peak memory consumption was 64.8MB. Max. memory is 8.0GB. [2022-02-01 00:19:33,879 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 201.3MB. Free memory is still 169.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:19:33,879 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.56ms. Allocated memory is still 201.3MB. Free memory was 152.1MB in the beginning and 174.7MB in the end (delta: -22.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-01 00:19:33,880 INFO L158 Benchmark]: Boogie Preprocessor took 40.09ms. Allocated memory is still 201.3MB. Free memory was 174.7MB in the beginning and 172.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-01 00:19:33,880 INFO L158 Benchmark]: RCFGBuilder took 412.93ms. Allocated memory is still 201.3MB. Free memory was 172.6MB in the beginning and 152.1MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2022-02-01 00:19:33,880 INFO L158 Benchmark]: TraceAbstraction took 822.09ms. Allocated memory is still 201.3MB. Free memory was 151.6MB in the beginning and 87.1MB in the end (delta: 64.5MB). Peak memory consumption was 65.0MB. Max. memory is 8.0GB. [2022-02-01 00:19:33,882 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 201.3MB. Free memory is still 169.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 262.56ms. Allocated memory is still 201.3MB. Free memory was 152.1MB in the beginning and 174.7MB in the end (delta: -22.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.09ms. Allocated memory is still 201.3MB. Free memory was 174.7MB in the beginning and 172.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 412.93ms. Allocated memory is still 201.3MB. Free memory was 172.6MB in the beginning and 152.1MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 822.09ms. Allocated memory is still 201.3MB. Free memory was 151.6MB in the beginning and 87.1MB in the end (delta: 64.5MB). Peak memory consumption was 65.0MB. 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: 235]: 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 60, overapproximation of someUnaryDOUBLEoperation at line 149, overapproximation of bitwiseAnd at line 163, overapproximation of someUnaryFLOAToperation at line 147, overapproximation of someBinaryArithmeticFLOAToperation at line 166. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L62] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L145-L153] static const float one_asin = 1.0000000000e+00, huge_asin = 1.000e+30, pio2_hi_asin = 1.57079637050628662109375f, pio2_lo_asin = -4.37113900018624283e-8f, pio4_hi_asin = 0.785398185253143310546875f, pS0_asin = 1.6666667163e-01, pS1_asin = -3.2556581497e-01, pS2_asin = 2.0121252537e-01, pS3_asin = -4.0055535734e-02, pS4_asin = 7.9153501429e-04, pS5_asin = 3.4793309169e-05, qS1_asin = -2.4033949375e+00, qS2_asin = 2.0209457874e+00, qS3_asin = -6.8828397989e-01, qS4_asin = 7.7038154006e-02; [L230] float x = 1.0f / 0.0f; [L231] CALL, EXPR __ieee754_asinf(x) [L156] float t, w, p, q, c, r, s; [L157] __int32_t hx, ix; [L159] ieee_float_shape_type gf_u; [L160] gf_u.value = (x) [L161] EXPR gf_u.word [L161] (hx) = gf_u.word [L163] ix = hx & 0x7fffffff [L164] COND TRUE ix == 0x3f800000 [L166] return x * pio2_hi_asin + x * pio2_lo_asin; [L231] RET, EXPR __ieee754_asinf(x) [L231] float res = __ieee754_asinf(x); [L234] CALL, EXPR isnan_float(res) [L60] return x != x; [L234] RET, EXPR isnan_float(res) [L234] COND TRUE !isnan_float(res) [L235] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 98 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 85 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 82 mSDsluCounter, 87 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 90 IncrementalHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 85 mSDtfsCounter, 90 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred 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 00:19:33,908 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...