/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:19:10,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:19:10,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:19:10,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-01 00:19:10,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:19:10,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:19:10,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:19:10,439 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 00:19:10,449 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:19:10,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:19:10,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:19:10,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:19:10,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:19:10,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:19:10,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:19:10,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:19:10,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:19:10,452 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:19:10,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:19:10,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:19:10,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:19:10,453 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:19:10,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:19:10,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:19:10,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:19:10,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:19:10,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:19:10,453 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:19:10,453 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:19:10,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:19:10,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:19:10,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:19:10,652 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:19:10,653 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:19:10,654 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2022-02-01 00:19:10,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02b39e419/64e7dd62431048a1885f574f30c554d0/FLAG75b344311 [2022-02-01 00:19:11,112 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:19:11,112 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2022-02-01 00:19:11,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02b39e419/64e7dd62431048a1885f574f30c554d0/FLAG75b344311 [2022-02-01 00:19:11,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02b39e419/64e7dd62431048a1885f574f30c554d0 [2022-02-01 00:19:11,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:19:11,542 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:19:11,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:19:11,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:19:11,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:19:11,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:19:11" (1/1) ... [2022-02-01 00:19:11,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a943fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:11, skipping insertion in model container [2022-02-01 00:19:11,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:19:11" (1/1) ... [2022-02-01 00:19:11,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:19:11,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:19:11,736 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_1091.c[2108,2121] [2022-02-01 00:19:11,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:19:11,742 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:19:11,758 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_1091.c[2108,2121] [2022-02-01 00:19:11,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:19:11,773 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:19:11,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:11 WrapperNode [2022-02-01 00:19:11,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:19:11,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:19:11,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:19:11,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:19:11,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:11" (1/1) ... [2022-02-01 00:19:11,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:11" (1/1) ... [2022-02-01 00:19:11,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:11" (1/1) ... [2022-02-01 00:19:11,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:11" (1/1) ... [2022-02-01 00:19:11,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:11" (1/1) ... [2022-02-01 00:19:11,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:11" (1/1) ... [2022-02-01 00:19:11,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:11" (1/1) ... [2022-02-01 00:19:11,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:19:11,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:19:11,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:19:11,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:19:11,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:11" (1/1) ... [2022-02-01 00:19:11,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:19:11,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:19:11,851 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 00:19:11,886 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 00:19:11,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:19:11,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:19:11,892 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:19:11,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2022-02-01 00:19:11,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2022-02-01 00:19:11,892 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:19:11,892 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:19:11,892 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:19:11,892 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:19:11,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:19:11,892 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2022-02-01 00:19:11,892 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2022-02-01 00:19:11,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-01 00:19:11,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-02-01 00:19:11,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:19:11,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:19:11,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:19:11,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-02-01 00:19:11,893 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:19:11,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:19:11,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:19:11,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:19:11,970 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:19:11,972 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:19:12,110 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:19:12,114 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:19:12,114 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-02-01 00:19:12,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:19:12 BoogieIcfgContainer [2022-02-01 00:19:12,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:19:12,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:19:12,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:19:12,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:19:12,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:19:11" (1/3) ... [2022-02-01 00:19:12,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c23d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:19:12, skipping insertion in model container [2022-02-01 00:19:12,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:11" (2/3) ... [2022-02-01 00:19:12,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c23d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:19:12, skipping insertion in model container [2022-02-01 00:19:12,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:19:12" (3/3) ... [2022-02-01 00:19:12,121 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2022-02-01 00:19:12,124 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:19:12,124 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:19:12,150 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:19:12,154 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 00:19:12,154 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:19:12,164 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 38 states have internal predecessors, (58), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-01 00:19:12,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-01 00:19:12,169 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:19:12,169 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] [2022-02-01 00:19:12,170 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:19:12,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:19:12,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1733860191, now seen corresponding path program 1 times [2022-02-01 00:19:12,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:19:12,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224916656] [2022-02-01 00:19:12,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:19:12,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:19:12,216 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:19:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:19:12,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:19:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:19:12,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-01 00:19:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:19:12,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-01 00:19:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:19:12,371 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 00:19:12,372 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:19:12,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224916656] [2022-02-01 00:19:12,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1224916656] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:19:12,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:19:12,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-01 00:19:12,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065762245] [2022-02-01 00:19:12,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:19:12,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-01 00:19:12,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:19:12,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-01 00:19:12,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-01 00:19:12,401 INFO L87 Difference]: Start difference. First operand has 47 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 38 states have internal predecessors, (58), 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) [2022-02-01 00:19:12,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:19:12,560 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2022-02-01 00:19:12,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-01 00:19:12,585 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 [2022-02-01 00:19:12,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:19:12,590 INFO L225 Difference]: With dead ends: 86 [2022-02-01 00:19:12,590 INFO L226 Difference]: Without dead ends: 43 [2022-02-01 00:19:12,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-01 00:19:12,594 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 54 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-01 00:19:12,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 59 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-01 00:19:12,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-02-01 00:19:12,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-02-01 00:19:12,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 35 states have internal predecessors, (50), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-01 00:19:12,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2022-02-01 00:19:12,654 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2022-02-01 00:19:12,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:19:12,655 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2022-02-01 00:19:12,655 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) [2022-02-01 00:19:12,655 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2022-02-01 00:19:12,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-01 00:19:12,656 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:19:12,656 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:19:12,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:19:12,656 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:19:12,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:19:12,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1956454764, now seen corresponding path program 1 times [2022-02-01 00:19:12,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:19:12,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857302774] [2022-02-01 00:19:12,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:19:12,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:19:12,659 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:19:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:19:12,736 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:19:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:19:12,771 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:19:12,772 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:19:12,774 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:19:12,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:19:12,777 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:19:12,779 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:19:12,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:19:12 BoogieIcfgContainer [2022-02-01 00:19:12,789 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:19:12,789 INFO L158 Benchmark]: Toolchain (without parser) took 1246.87ms. Allocated memory is still 162.5MB. Free memory was 117.4MB in the beginning and 88.6MB in the end (delta: 28.8MB). Peak memory consumption was 27.9MB. Max. memory is 8.0GB. [2022-02-01 00:19:12,790 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 162.5MB. Free memory is still 133.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:19:12,790 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.65ms. Allocated memory is still 162.5MB. Free memory was 117.2MB in the beginning and 142.1MB in the end (delta: -24.9MB). Peak memory consumption was 13.2MB. Max. memory is 8.0GB. [2022-02-01 00:19:12,790 INFO L158 Benchmark]: Boogie Preprocessor took 38.49ms. Allocated memory is still 162.5MB. Free memory was 142.1MB in the beginning and 140.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-01 00:19:12,791 INFO L158 Benchmark]: RCFGBuilder took 302.13ms. Allocated memory is still 162.5MB. Free memory was 140.3MB in the beginning and 127.0MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-02-01 00:19:12,791 INFO L158 Benchmark]: TraceAbstraction took 671.90ms. Allocated memory is still 162.5MB. Free memory was 126.7MB in the beginning and 88.6MB in the end (delta: 38.0MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2022-02-01 00:19:12,793 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 162.5MB. Free memory is still 133.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 230.65ms. Allocated memory is still 162.5MB. Free memory was 117.2MB in the beginning and 142.1MB in the end (delta: -24.9MB). Peak memory consumption was 13.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.49ms. Allocated memory is still 162.5MB. Free memory was 142.1MB in the beginning and 140.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 302.13ms. Allocated memory is still 162.5MB. Free memory was 140.3MB in the beginning and 127.0MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 671.90ms. Allocated memory is still 162.5MB. Free memory was 126.7MB in the beginning and 88.6MB in the end (delta: 38.0MB). Peak memory consumption was 37.7MB. 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: 97]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftRight at line 43, overapproximation of bitwiseOr at line 44, overapproximation of someBinaryArithmeticDOUBLEoperation at line 92, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryDOUBLEComparisonOperation at line 17. Possible FailurePath: [L19] static const double huge_ceil = 1.0e300; [L92] double x = 0.0 / 0.0; [L93] CALL, EXPR ceil_double(x) [L22] __int32_t i0, i1, j0; [L23] __uint32_t i, j; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (i0) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (i1) = ew_u.parts.lsw [L30] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L31] COND TRUE j0 < 20 [L32] COND FALSE !(j0 < 0) [L43] i = (0x000fffff) >> j0 [L44] COND TRUE ((i0 & i) | i1) == 0 [L45] return x; [L93] RET, EXPR ceil_double(x) [L93] double res = ceil_double(x); [L96] CALL, EXPR isnan_double(res) [L17] return x != x; [L96] RET, EXPR isnan_double(res) [L96] COND TRUE !isnan_double(res) [L97] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 50 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, 55 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 54 mSDsluCounter, 59 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58 IncrementalHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 57 mSDtfsCounter, 58 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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 00:19:12,820 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...