/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/double_req_bl_0834.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 22:59:16,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 22:59:16,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 22:59:16,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 22:59:16,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 22:59:16,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 22:59:16,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 22:59:16,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 22:59:16,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 22:59:16,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 22:59:16,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 22:59:16,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 22:59:16,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 22:59:16,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 22:59:16,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 22:59:16,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 22:59:16,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 22:59:16,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 22:59:16,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 22:59:16,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 22:59:16,352 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 22:59:16,368 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 22:59:16,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 22:59:16,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 22:59:16,370 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 22:59:16,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 22:59:16,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 22:59:16,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 22:59:16,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 22:59:16,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 22:59:16,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 22:59:16,372 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 22:59:16,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 22:59:16,372 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 22:59:16,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 22:59:16,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 22:59:16,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 22:59:16,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 22:59:16,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 22:59:16,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:59:16,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 22:59:16,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 22:59:16,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 22:59:16,373 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 22:59:16,374 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 22:59:16,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 22:59:16,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 22:59:16,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 22:59:16,591 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 22:59:16,591 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 22:59:16,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0834.c [2022-01-31 22:59:16,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc96ad729/ebf5d2c63dde49a5ae005882b1673697/FLAGe40a9614c [2022-01-31 22:59:17,045 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 22:59:17,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0834.c [2022-01-31 22:59:17,066 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc96ad729/ebf5d2c63dde49a5ae005882b1673697/FLAGe40a9614c [2022-01-31 22:59:17,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc96ad729/ebf5d2c63dde49a5ae005882b1673697 [2022-01-31 22:59:17,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 22:59:17,089 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 22:59:17,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 22:59:17,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 22:59:17,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 22:59:17,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:59:17" (1/1) ... [2022-01-31 22:59:17,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@109c9bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:59:17, skipping insertion in model container [2022-01-31 22:59:17,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:59:17" (1/1) ... [2022-01-31 22:59:17,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 22:59:17,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 22:59:17,309 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_0834.c[4256,4269] [2022-01-31 22:59:17,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:59:17,321 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 22:59:17,352 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_0834.c[4256,4269] [2022-01-31 22:59:17,352 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:59:17,364 INFO L208 MainTranslator]: Completed translation [2022-01-31 22:59:17,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:59:17 WrapperNode [2022-01-31 22:59:17,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 22:59:17,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 22:59:17,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 22:59:17,366 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 22:59:17,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:59:17" (1/1) ... [2022-01-31 22:59:17,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:59:17" (1/1) ... [2022-01-31 22:59:17,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:59:17" (1/1) ... [2022-01-31 22:59:17,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:59:17" (1/1) ... [2022-01-31 22:59:17,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:59:17" (1/1) ... [2022-01-31 22:59:17,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:59:17" (1/1) ... [2022-01-31 22:59:17,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:59:17" (1/1) ... [2022-01-31 22:59:17,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 22:59:17,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 22:59:17,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 22:59:17,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 22:59:17,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:59:17" (1/1) ... [2022-01-31 22:59:17,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:59:17,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 22:59:17,454 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 22:59:17,459 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 22:59:17,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 22:59:17,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 22:59:17,483 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 22:59:17,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_exp [2022-01-31 22:59:17,483 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2022-01-31 22:59:17,483 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 22:59:17,483 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 22:59:17,483 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 22:59:17,484 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 22:59:17,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 22:59:17,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-01-31 22:59:17,484 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_exp [2022-01-31 22:59:17,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 22:59:17,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-01-31 22:59:17,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 22:59:17,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 22:59:17,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-01-31 22:59:17,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 22:59:17,485 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2022-01-31 22:59:17,485 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 22:59:17,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 22:59:17,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 22:59:17,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-01-31 22:59:17,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 22:59:17,554 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 22:59:17,555 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 22:59:17,843 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 22:59:17,848 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 22:59:17,848 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-01-31 22:59:17,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:59:17 BoogieIcfgContainer [2022-01-31 22:59:17,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 22:59:17,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 22:59:17,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 22:59:17,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 22:59:17,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:59:17" (1/3) ... [2022-01-31 22:59:17,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f66f9cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:59:17, skipping insertion in model container [2022-01-31 22:59:17,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:59:17" (2/3) ... [2022-01-31 22:59:17,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f66f9cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:59:17, skipping insertion in model container [2022-01-31 22:59:17,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:59:17" (3/3) ... [2022-01-31 22:59:17,857 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0834.c [2022-01-31 22:59:17,861 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 22:59:17,861 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 22:59:17,901 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 22:59:17,910 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 22:59:17,911 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 22:59:17,924 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 46 states have (on average 1.608695652173913) internal successors, (74), 47 states have internal predecessors, (74), 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 22:59:17,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-31 22:59:17,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:59:17,931 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 22:59:17,931 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:59:17,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:59:17,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1290031072, now seen corresponding path program 1 times [2022-01-31 22:59:17,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:59:17,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598254289] [2022-01-31 22:59:17,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:59:17,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:59:17,991 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:59:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:18,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:59:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:18,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:59:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:18,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:59:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:18,304 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 22:59:18,305 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:59:18,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598254289] [2022-01-31 22:59:18,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1598254289] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:59:18,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:59:18,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 22:59:18,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452060815] [2022-01-31 22:59:18,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:59:18,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 22:59:18,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:59:18,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 22:59:18,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 22:59:18,345 INFO L87 Difference]: Start difference. First operand has 56 states, 46 states have (on average 1.608695652173913) internal successors, (74), 47 states have internal predecessors, (74), 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 4.5) internal successors, (18), 2 states have internal predecessors, (18), 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 22:59:18,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:59:18,612 INFO L93 Difference]: Finished difference Result 104 states and 157 transitions. [2022-01-31 22:59:18,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 22:59:18,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 2 states have internal predecessors, (18), 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 25 [2022-01-31 22:59:18,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:59:18,621 INFO L225 Difference]: With dead ends: 104 [2022-01-31 22:59:18,621 INFO L226 Difference]: Without dead ends: 52 [2022-01-31 22:59:18,624 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 22:59:18,626 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 58 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:59:18,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 63 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:59:18,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-01-31 22:59:18,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-01-31 22:59:18,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 44 states have internal predecessors, (56), 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 22:59:18,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2022-01-31 22:59:18,675 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 25 [2022-01-31 22:59:18,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:59:18,676 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2022-01-31 22:59:18,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 2 states have internal predecessors, (18), 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 22:59:18,677 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2022-01-31 22:59:18,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-31 22:59:18,678 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:59:18,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:59:18,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 22:59:18,679 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:59:18,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:59:18,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1769423231, now seen corresponding path program 1 times [2022-01-31 22:59:18,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:59:18,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431918755] [2022-01-31 22:59:18,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:59:18,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:59:18,688 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:59:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 22:59:18,816 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 22:59:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 22:59:18,916 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-01-31 22:59:18,916 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 22:59:18,920 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 22:59:18,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 22:59:18,926 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 22:59:18,928 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 22:59:18,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:59:18 BoogieIcfgContainer [2022-01-31 22:59:18,947 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 22:59:18,949 INFO L158 Benchmark]: Toolchain (without parser) took 1859.04ms. Allocated memory is still 175.1MB. Free memory was 125.6MB in the beginning and 64.0MB in the end (delta: 61.6MB). Peak memory consumption was 61.4MB. Max. memory is 8.0GB. [2022-01-31 22:59:18,949 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 175.1MB. Free memory is still 142.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 22:59:18,950 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.22ms. Allocated memory is still 175.1MB. Free memory was 125.3MB in the beginning and 148.4MB in the end (delta: -23.1MB). Peak memory consumption was 11.0MB. Max. memory is 8.0GB. [2022-01-31 22:59:18,952 INFO L158 Benchmark]: Boogie Preprocessor took 63.11ms. Allocated memory is still 175.1MB. Free memory was 148.4MB in the beginning and 145.8MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-01-31 22:59:18,953 INFO L158 Benchmark]: RCFGBuilder took 420.50ms. Allocated memory is still 175.1MB. Free memory was 145.8MB in the beginning and 129.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-01-31 22:59:18,955 INFO L158 Benchmark]: TraceAbstraction took 1094.10ms. Allocated memory is still 175.1MB. Free memory was 128.5MB in the beginning and 64.0MB in the end (delta: 64.5MB). Peak memory consumption was 65.0MB. Max. memory is 8.0GB. [2022-01-31 22:59:18,960 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 175.1MB. Free memory is still 142.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 275.22ms. Allocated memory is still 175.1MB. Free memory was 125.3MB in the beginning and 148.4MB in the end (delta: -23.1MB). Peak memory consumption was 11.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 63.11ms. Allocated memory is still 175.1MB. Free memory was 148.4MB in the beginning and 145.8MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 420.50ms. Allocated memory is still 175.1MB. Free memory was 145.8MB in the beginning and 129.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 1094.10ms. Allocated memory is still 175.1MB. Free memory was 128.5MB in the beginning and 64.0MB 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: 160]: 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 143, overapproximation of someUnaryDOUBLEoperation at line 23, overapproximation of someBinaryArithmeticDOUBLEoperation at line 73, overapproximation of bitwiseAnd at line 142, overapproximation of someBinaryDOUBLEComparisonOperation at line 72. Possible FailurePath: [L19-L44] static const double one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+300, twom1000_exp = 9.33263618503218878990e-302, o_threshold_exp = 7.09782712893383973096e+02, u_threshold_exp = -7.45133219101941108420e+02, ln2HI_exp[2] = { 6.93147180369123816490e-01, -6.93147180369123816490e-01, }, ln2LO_exp[2] = { 1.90821492927058770002e-10, -1.90821492927058770002e-10, }, invln2_exp = 1.44269504088896338700e+00, P1_exp = 1.66666666666666019037e-01, P2_exp = -2.77777777770155933842e-03, P3_exp = 6.61375632143793436117e-05, P4_exp = -1.65339022054652515390e-06, P5_exp = 4.13813679705723846039e-08; [L155] double x = 1.0 / 0.0; [L156] CALL, EXPR __ieee754_exp(x) [L47] double y, hi, lo, c, t; [L48] __int32_t k = 0, xsb; [L49] __uint32_t hx; [L52] ieee_double_shape_type gh_u; [L53] gh_u.value = (x) [L54] EXPR gh_u.parts.msw [L54] (hx) = gh_u.parts.msw [L56] xsb = (hx >> 31) & 1 [L57] hx &= 0x7fffffff [L59] COND TRUE hx >= 0x40862E42 [L60] COND FALSE !(hx >= 0x7ff00000) [L72] COND TRUE x > o_threshold_exp [L73] return huge_exp * huge_exp; [L156] RET, EXPR __ieee754_exp(x) [L156] double res = __ieee754_exp(x); [L159] CALL, EXPR isinf_double(x) [L135] __int32_t hx, lx; [L137] ieee_double_shape_type ew_u; [L138] ew_u.value = (x) [L139] EXPR ew_u.parts.msw [L139] (hx) = ew_u.parts.msw [L140] EXPR ew_u.parts.lsw [L140] (lx) = ew_u.parts.lsw [L142] hx &= 0x7fffffff [L143] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L144] hx = 0x7ff00000 - hx [L145] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L159] RET, EXPR isinf_double(x) [L159] COND TRUE !isinf_double(x) [L160] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, 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, 59 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 58 mSDsluCounter, 63 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 67 IncrementalHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 61 mSDtfsCounter, 67 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=56occurred 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 22:59:19,008 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...