/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_1121b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 23:00:14,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:00:14,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:00:14,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 23:00:15,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:00:15,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:00:15,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:00:15,030 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 23:00:15,045 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:00:15,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:00:15,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:00:15,046 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 23:00:15,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:00:15,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 23:00:15,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:00:15,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:00:15,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:00:15,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:00:15,047 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 23:00:15,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:00:15,047 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:00:15,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:00:15,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:00:15,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:00:15,048 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:00:15,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:00:15,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:00:15,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:00:15,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:00:15,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:00:15,049 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 23:00:15,049 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:00:15,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:00:15,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:00:15,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:00:15,325 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:00:15,327 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:00:15,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1121b.c [2022-01-31 23:00:15,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3f553088/ef21f9e5559c4818be32776270339337/FLAG97929966b [2022-01-31 23:00:15,832 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:00:15,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1121b.c [2022-01-31 23:00:15,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3f553088/ef21f9e5559c4818be32776270339337/FLAG97929966b [2022-01-31 23:00:15,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3f553088/ef21f9e5559c4818be32776270339337 [2022-01-31 23:00:15,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:00:15,855 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:00:15,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:00:15,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:00:15,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:00:15,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:00:15" (1/1) ... [2022-01-31 23:00:15,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1179cf03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:15, skipping insertion in model container [2022-01-31 23:00:15,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:00:15" (1/1) ... [2022-01-31 23:00:15,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:00:15,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:00:16,156 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1121b.c[3884,3897] [2022-01-31 23:00:16,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:00:16,172 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:00:16,232 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1121b.c[3884,3897] [2022-01-31 23:00:16,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:00:16,247 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:00:16,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:16 WrapperNode [2022-01-31 23:00:16,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:00:16,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:00:16,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:00:16,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:00:16,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:16" (1/1) ... [2022-01-31 23:00:16,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:16" (1/1) ... [2022-01-31 23:00:16,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:16" (1/1) ... [2022-01-31 23:00:16,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:16" (1/1) ... [2022-01-31 23:00:16,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:16" (1/1) ... [2022-01-31 23:00:16,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:16" (1/1) ... [2022-01-31 23:00:16,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:16" (1/1) ... [2022-01-31 23:00:16,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:00:16,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:00:16,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:00:16,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:00:16,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:16" (1/1) ... [2022-01-31 23:00:16,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:00:16,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:00:16,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 23:00:16,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 23:00:16,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:00:16,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:00:16,405 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:00:16,405 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2022-01-31 23:00:16,406 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2022-01-31 23:00:16,406 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:00:16,407 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:00:16,407 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:00:16,407 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:00:16,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:00:16,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-01-31 23:00:16,407 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2022-01-31 23:00:16,408 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2022-01-31 23:00:16,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 23:00:16,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-01-31 23:00:16,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:00:16,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:00:16,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-01-31 23:00:16,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:00:16,409 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:00:16,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:00:16,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:00:16,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-01-31 23:00:16,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:00:16,488 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:00:16,490 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:00:16,835 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:00:16,842 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:00:16,842 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-01-31 23:00:16,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:00:16 BoogieIcfgContainer [2022-01-31 23:00:16,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:00:16,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:00:16,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:00:16,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:00:16,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:00:15" (1/3) ... [2022-01-31 23:00:16,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e26a08d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:00:16, skipping insertion in model container [2022-01-31 23:00:16,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:16" (2/3) ... [2022-01-31 23:00:16,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e26a08d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:00:16, skipping insertion in model container [2022-01-31 23:00:16,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:00:16" (3/3) ... [2022-01-31 23:00:16,852 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121b.c [2022-01-31 23:00:16,856 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:00:16,856 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 23:00:16,896 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:00:16,901 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=JORDAN [2022-01-31 23:00:16,902 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 23:00:16,916 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 58 states have (on average 1.7413793103448276) internal successors, (101), 59 states have internal predecessors, (101), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 23:00:16,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 23:00:16,926 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:16,927 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] [2022-01-31 23:00:16,927 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:16,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:16,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1002246117, now seen corresponding path program 1 times [2022-01-31 23:00:16,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:16,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626712299] [2022-01-31 23:00:16,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:16,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:16,991 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:00:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:17,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:00:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:17,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:00:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:17,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 23:00:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:17,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:00:17,199 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:00:17,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626712299] [2022-01-31 23:00:17,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [626712299] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:00:17,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:00:17,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 23:00:17,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656443231] [2022-01-31 23:00:17,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:00:17,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 23:00:17,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:00:17,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 23:00:17,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 23:00:17,238 INFO L87 Difference]: Start difference. First operand has 68 states, 58 states have (on average 1.7413793103448276) internal successors, (101), 59 states have internal predecessors, (101), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 23:00:17,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:00:17,500 INFO L93 Difference]: Finished difference Result 128 states and 210 transitions. [2022-01-31 23:00:17,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 23:00:17,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-01-31 23:00:17,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:00:17,511 INFO L225 Difference]: With dead ends: 128 [2022-01-31 23:00:17,511 INFO L226 Difference]: Without dead ends: 64 [2022-01-31 23:00:17,516 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 [2022-01-31 23:00:17,519 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 87 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:00:17,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 89 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 23:00:17,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-01-31 23:00:17,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-01-31 23:00:17,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 56 states have internal predecessors, (83), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 23:00:17,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2022-01-31 23:00:17,563 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 22 [2022-01-31 23:00:17,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:00:17,563 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2022-01-31 23:00:17,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 23:00:17,564 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2022-01-31 23:00:17,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-31 23:00:17,566 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:17,566 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] [2022-01-31 23:00:17,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:00:17,567 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:17,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:17,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1368729192, now seen corresponding path program 1 times [2022-01-31 23:00:17,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:17,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972426862] [2022-01-31 23:00:17,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:17,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:17,579 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:00:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 23:00:17,671 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 23:00:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 23:00:17,772 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-01-31 23:00:17,773 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 23:00:17,777 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 23:00:17,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:00:17,783 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 23:00:17,785 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 23:00:17,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:00:17 BoogieIcfgContainer [2022-01-31 23:00:17,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 23:00:17,806 INFO L158 Benchmark]: Toolchain (without parser) took 1950.86ms. Allocated memory is still 209.7MB. Free memory was 156.0MB in the beginning and 107.8MB in the end (delta: 48.2MB). Peak memory consumption was 48.4MB. Max. memory is 8.0GB. [2022-01-31 23:00:17,806 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 209.7MB. Free memory is still 172.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:00:17,807 INFO L158 Benchmark]: CACSL2BoogieTranslator took 392.39ms. Allocated memory is still 209.7MB. Free memory was 155.8MB in the beginning and 177.0MB in the end (delta: -21.2MB). Peak memory consumption was 9.6MB. Max. memory is 8.0GB. [2022-01-31 23:00:17,808 INFO L158 Benchmark]: Boogie Preprocessor took 70.56ms. Allocated memory is still 209.7MB. Free memory was 177.0MB in the beginning and 174.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 23:00:17,809 INFO L158 Benchmark]: RCFGBuilder took 525.10ms. Allocated memory is still 209.7MB. Free memory was 174.9MB in the beginning and 156.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-01-31 23:00:17,809 INFO L158 Benchmark]: TraceAbstraction took 958.29ms. Allocated memory is still 209.7MB. Free memory was 155.5MB in the beginning and 107.8MB in the end (delta: 47.7MB). Peak memory consumption was 47.2MB. Max. memory is 8.0GB. [2022-01-31 23:00:17,811 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 209.7MB. Free memory is still 172.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 392.39ms. Allocated memory is still 209.7MB. Free memory was 155.8MB in the beginning and 177.0MB in the end (delta: -21.2MB). Peak memory consumption was 9.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 70.56ms. Allocated memory is still 209.7MB. Free memory was 177.0MB in the beginning and 174.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 525.10ms. Allocated memory is still 209.7MB. Free memory was 174.9MB in the beginning and 156.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 958.29ms. Allocated memory is still 209.7MB. Free memory was 155.5MB in the beginning and 107.8MB in the end (delta: 47.7MB). Peak memory consumption was 47.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 177]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 172, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L171] double x = __VERIFIER_nondet_double(); [L172] double y = -0.0; [L173] CALL, EXPR fmod_double(x, y) [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); [L173] RET, EXPR fmod_double(x, y) [L173] double res = fmod_double(x, y); [L176] CALL, EXPR isnan_double(res) [L18] return x != x; [L176] RET, EXPR isnan_double(res) [L176] COND TRUE !isnan_double(res) [L177] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 88 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 87 mSDsluCounter, 89 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 94 IncrementalHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 87 mSDtfsCounter, 94 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-01-31 23:00:17,850 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...