/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:20:58,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:20:58,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:20:58,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-01 00:20:58,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:20:58,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:20:58,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:20:58,351 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 00:20:58,359 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:20:58,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:20:58,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:20:58,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:20:58,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:20:58,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:20:58,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:20:58,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:20:58,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:20:58,361 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:20:58,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:20:58,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:20:58,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:20:58,362 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:20:58,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:20:58,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:20:58,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:20:58,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:20:58,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:20:58,363 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:20:58,363 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:20:58,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:20:58,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:20:58,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:20:58,586 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:20:58,586 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:20:58,587 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2022-02-01 00:20:58,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0be4a455a/4eb39fb3af9247c186f883dcd31c7276/FLAG0f318cff8 [2022-02-01 00:20:59,030 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:20:59,030 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2022-02-01 00:20:59,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0be4a455a/4eb39fb3af9247c186f883dcd31c7276/FLAG0f318cff8 [2022-02-01 00:20:59,053 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0be4a455a/4eb39fb3af9247c186f883dcd31c7276 [2022-02-01 00:20:59,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:20:59,056 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:20:59,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:20:59,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:20:59,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:20:59,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:20:59" (1/1) ... [2022-02-01 00:20:59,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@226f6f60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:59, skipping insertion in model container [2022-02-01 00:20:59,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:20:59" (1/1) ... [2022-02-01 00:20:59,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:20:59,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:20:59,258 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c[2947,2960] [2022-02-01 00:20:59,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:20:59,263 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:20:59,302 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c[2947,2960] [2022-02-01 00:20:59,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:20:59,311 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:20:59,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:59 WrapperNode [2022-02-01 00:20:59,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:20:59,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:20:59,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:20:59,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:20:59,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:59" (1/1) ... [2022-02-01 00:20:59,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:59" (1/1) ... [2022-02-01 00:20:59,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:59" (1/1) ... [2022-02-01 00:20:59,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:59" (1/1) ... [2022-02-01 00:20:59,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:59" (1/1) ... [2022-02-01 00:20:59,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:59" (1/1) ... [2022-02-01 00:20:59,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:59" (1/1) ... [2022-02-01 00:20:59,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:20:59,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:20:59,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:20:59,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:20:59,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:59" (1/1) ... [2022-02-01 00:20:59,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:20:59,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:20:59,399 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 00:20:59,418 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 00:20:59,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:20:59,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:20:59,443 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:20:59,443 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2022-02-01 00:20:59,443 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2022-02-01 00:20:59,443 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:20:59,443 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:20:59,444 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:20:59,444 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:20:59,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:20:59,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-02-01 00:20:59,444 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2022-02-01 00:20:59,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-01 00:20:59,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-02-01 00:20:59,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:20:59,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:20:59,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-02-01 00:20:59,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:20:59,447 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2022-02-01 00:20:59,447 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:20:59,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:20:59,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:20:59,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-02-01 00:20:59,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:20:59,534 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:20:59,535 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:20:59,740 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:20:59,750 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:20:59,750 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-02-01 00:20:59,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:20:59 BoogieIcfgContainer [2022-02-01 00:20:59,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:20:59,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:20:59,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:20:59,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:20:59,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:20:59" (1/3) ... [2022-02-01 00:20:59,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47f6705c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:20:59, skipping insertion in model container [2022-02-01 00:20:59,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:59" (2/3) ... [2022-02-01 00:20:59,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47f6705c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:20:59, skipping insertion in model container [2022-02-01 00:20:59,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:20:59" (3/3) ... [2022-02-01 00:20:59,758 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2022-02-01 00:20:59,761 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:20:59,761 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:20:59,801 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:20:59,805 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 00:20:59,806 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:20:59,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 50 states have (on average 1.66) internal successors, (83), 51 states have internal predecessors, (83), 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 00:20:59,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-01 00:20:59,823 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:20:59,823 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] [2022-02-01 00:20:59,824 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:20:59,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:20:59,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1365987300, now seen corresponding path program 1 times [2022-02-01 00:20:59,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:20:59,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724568527] [2022-02-01 00:20:59,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:20:59,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:20:59,880 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:20:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:20:59,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:21:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:21:00,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-01 00:21:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:21:00,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-02-01 00:21:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:21:00,046 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 00:21:00,047 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:21:00,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724568527] [2022-02-01 00:21:00,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1724568527] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:21:00,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:21:00,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-01 00:21:00,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111026839] [2022-02-01 00:21:00,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:21:00,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-01 00:21:00,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:21:00,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-01 00:21:00,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-01 00:21:00,078 INFO L87 Difference]: Start difference. First operand has 60 states, 50 states have (on average 1.66) internal successors, (83), 51 states have internal predecessors, (83), 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) [2022-02-01 00:21:00,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:21:00,259 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2022-02-01 00:21:00,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-01 00:21:00,261 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 [2022-02-01 00:21:00,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:21:00,269 INFO L225 Difference]: With dead ends: 112 [2022-02-01 00:21:00,269 INFO L226 Difference]: Without dead ends: 55 [2022-02-01 00:21:00,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 00:21:00,278 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 67 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-01 00:21:00,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 70 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-01 00:21:00,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-02-01 00:21:00,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-02-01 00:21:00,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 47 states have internal predecessors, (63), 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 00:21:00,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2022-02-01 00:21:00,305 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2022-02-01 00:21:00,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:21:00,306 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2022-02-01 00:21:00,306 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) [2022-02-01 00:21:00,306 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2022-02-01 00:21:00,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-01 00:21:00,307 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:21:00,307 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, 1] [2022-02-01 00:21:00,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:21:00,308 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:21:00,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:21:00,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1407551246, now seen corresponding path program 1 times [2022-02-01 00:21:00,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:21:00,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067633928] [2022-02-01 00:21:00,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:21:00,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:21:00,316 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:21:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:21:00,413 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:21:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:21:00,503 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:21:00,503 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:21:00,507 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:21:00,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:21:00,511 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:21:00,512 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:21:00,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:21:00 BoogieIcfgContainer [2022-02-01 00:21:00,525 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:21:00,527 INFO L158 Benchmark]: Toolchain (without parser) took 1469.30ms. Allocated memory was 213.9MB in the beginning and 256.9MB in the end (delta: 43.0MB). Free memory was 164.7MB in the beginning and 227.9MB in the end (delta: -63.2MB). Peak memory consumption was 42.2MB. Max. memory is 8.0GB. [2022-02-01 00:21:00,527 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 213.9MB. Free memory is still 181.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:21:00,528 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.12ms. Allocated memory is still 213.9MB. Free memory was 164.6MB in the beginning and 188.0MB in the end (delta: -23.4MB). Peak memory consumption was 6.9MB. Max. memory is 8.0GB. [2022-02-01 00:21:00,530 INFO L158 Benchmark]: Boogie Preprocessor took 42.92ms. Allocated memory is still 213.9MB. Free memory was 188.0MB in the beginning and 186.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-01 00:21:00,530 INFO L158 Benchmark]: RCFGBuilder took 395.56ms. Allocated memory is still 213.9MB. Free memory was 186.1MB in the beginning and 169.9MB in the end (delta: 16.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-02-01 00:21:00,532 INFO L158 Benchmark]: TraceAbstraction took 772.79ms. Allocated memory was 213.9MB in the beginning and 256.9MB in the end (delta: 43.0MB). Free memory was 169.8MB in the beginning and 227.9MB in the end (delta: -58.1MB). Peak memory consumption was 47.8MB. Max. memory is 8.0GB. [2022-02-01 00:21:00,536 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 213.9MB. Free memory is still 181.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 252.12ms. Allocated memory is still 213.9MB. Free memory was 164.6MB in the beginning and 188.0MB in the end (delta: -23.4MB). Peak memory consumption was 6.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.92ms. Allocated memory is still 213.9MB. Free memory was 188.0MB in the beginning and 186.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 395.56ms. Allocated memory is still 213.9MB. Free memory was 186.1MB in the beginning and 169.9MB in the end (delta: 16.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 772.79ms. Allocated memory was 213.9MB in the beginning and 256.9MB in the end (delta: 43.0MB). Free memory was 169.8MB in the beginning and 227.9MB in the end (delta: -58.1MB). Peak memory consumption was 47.8MB. 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: 137]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 136, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseXor at line 33. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L128] float x = __VERIFIER_nondet_float(); [L129] float y = -1.0f / 0.0f; [L131] CALL isfinite_float(x) [L111] __int32_t ix; [L113] ieee_float_shape_type gf_u; [L114] gf_u.value = (x) [L115] EXPR gf_u.word [L115] (ix) = gf_u.word [L117] ix &= 0x7fffffff [L118] return (((ix) < 0x7f800000L)); [L131] RET isfinite_float(x) [L131] COND TRUE isfinite_float(x) [L133] CALL, EXPR fmod_float(x, y) [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); [L133] RET, EXPR fmod_float(x, y) [L133] float res = fmod_float(x, y); [L136] COND TRUE res != x [L137] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, 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, 68 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 67 mSDsluCounter, 70 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 78 IncrementalHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 68 mSDtfsCounter, 78 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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 00:21:00,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...