/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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:20:56,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:20:56,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:20:56,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-01 00:20:56,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:20:56,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:20:56,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:20:56,297 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 00:20:56,308 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:20:56,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:20:56,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:20:56,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:20:56,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:20:56,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:20:56,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:20:56,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:20:56,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:20:56,311 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:20:56,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:20:56,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:20:56,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:20:56,312 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:20:56,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:20:56,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:20:56,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:20:56,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:20:56,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:20:56,313 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:20:56,313 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:20:56,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:20:56,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:20:56,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:20:56,568 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:20:56,569 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:20:56,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2022-02-01 00:20:56,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a4b7d414/0444359c7d5a493ba7193853af1fec7e/FLAG112699883 [2022-02-01 00:20:57,003 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:20:57,004 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2022-02-01 00:20:57,011 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a4b7d414/0444359c7d5a493ba7193853af1fec7e/FLAG112699883 [2022-02-01 00:20:57,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a4b7d414/0444359c7d5a493ba7193853af1fec7e [2022-02-01 00:20:57,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:20:57,026 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:20:57,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:20:57,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:20:57,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:20:57,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:20:57" (1/1) ... [2022-02-01 00:20:57,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d45c1bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:57, skipping insertion in model container [2022-02-01 00:20:57,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:20:57" (1/1) ... [2022-02-01 00:20:57,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:20:57,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:20:57,213 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_1130a.c[2907,2920] [2022-02-01 00:20:57,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:20:57,268 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:20:57,294 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_1130a.c[2907,2920] [2022-02-01 00:20:57,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:20:57,308 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:20:57,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:57 WrapperNode [2022-02-01 00:20:57,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:20:57,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:20:57,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:20:57,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:20:57,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:57" (1/1) ... [2022-02-01 00:20:57,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:57" (1/1) ... [2022-02-01 00:20:57,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:57" (1/1) ... [2022-02-01 00:20:57,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:57" (1/1) ... [2022-02-01 00:20:57,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:57" (1/1) ... [2022-02-01 00:20:57,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:57" (1/1) ... [2022-02-01 00:20:57,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:57" (1/1) ... [2022-02-01 00:20:57,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:20:57,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:20:57,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:20:57,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:20:57,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:57" (1/1) ... [2022-02-01 00:20:57,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:20:57,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:20:57,392 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 00:20:57,399 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 00:20:57,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:20:57,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:20:57,428 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:20:57,428 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2022-02-01 00:20:57,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2022-02-01 00:20:57,428 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:20:57,428 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:20:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:20:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:20:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:20:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-02-01 00:20:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2022-02-01 00:20:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-01 00:20:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-02-01 00:20:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:20:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:20:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-02-01 00:20:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:20:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2022-02-01 00:20:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:20:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:20:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:20:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-02-01 00:20:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:20:57,525 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:20:57,527 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:20:57,839 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:20:57,844 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:20:57,844 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-02-01 00:20:57,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:20:57 BoogieIcfgContainer [2022-02-01 00:20:57,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:20:57,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:20:57,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:20:57,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:20:57,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:20:57" (1/3) ... [2022-02-01 00:20:57,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233e7d14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:20:57, skipping insertion in model container [2022-02-01 00:20:57,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:57" (2/3) ... [2022-02-01 00:20:57,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233e7d14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:20:57, skipping insertion in model container [2022-02-01 00:20:57,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:20:57" (3/3) ... [2022-02-01 00:20:57,856 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2022-02-01 00:20:57,860 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:20:57,860 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:20:57,902 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:20:57,907 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 00:20:57,907 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:20:57,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 51 states have (on average 1.6666666666666667) internal successors, (85), 52 states have internal predecessors, (85), 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 00:20:57,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-01 00:20:57,925 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:20:57,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:20:57,926 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:20:57,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:20:57,930 INFO L85 PathProgramCache]: Analyzing trace with hash -684118545, now seen corresponding path program 1 times [2022-02-01 00:20:57,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:20:57,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704380010] [2022-02-01 00:20:57,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:20:57,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:20:57,987 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:20:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:20:58,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:20:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:20:58,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-01 00:20:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:20:58,147 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 00:20:58,148 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:20:58,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704380010] [2022-02-01 00:20:58,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1704380010] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:20:58,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:20:58,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-01 00:20:58,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918818484] [2022-02-01 00:20:58,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:20:58,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-01 00:20:58,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:20:58,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-01 00:20:58,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-01 00:20:58,180 INFO L87 Difference]: Start difference. First operand has 61 states, 51 states have (on average 1.6666666666666667) internal successors, (85), 52 states have internal predecessors, (85), 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 3.5) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-02-01 00:20:58,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:20:58,427 INFO L93 Difference]: Finished difference Result 116 states and 180 transitions. [2022-02-01 00:20:58,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-01 00:20:58,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-02-01 00:20:58,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:20:58,436 INFO L225 Difference]: With dead ends: 116 [2022-02-01 00:20:58,437 INFO L226 Difference]: Without dead ends: 56 [2022-02-01 00:20:58,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 00:20:58,443 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 75 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-01 00:20:58,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 72 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-01 00:20:58,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-02-01 00:20:58,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-02-01 00:20:58,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 48 states have internal predecessors, (65), 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 00:20:58,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2022-02-01 00:20:58,485 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 19 [2022-02-01 00:20:58,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:20:58,486 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2022-02-01 00:20:58,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-02-01 00:20:58,486 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2022-02-01 00:20:58,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-01 00:20:58,487 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:20:58,488 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:20:58,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:20:58,488 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:20:58,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:20:58,491 INFO L85 PathProgramCache]: Analyzing trace with hash -799690004, now seen corresponding path program 1 times [2022-02-01 00:20:58,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:20:58,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507355473] [2022-02-01 00:20:58,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:20:58,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:20:58,497 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:20:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:20:58,543 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:20:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:20:58,613 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:20:58,614 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:20:58,616 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:20:58,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:20:58,620 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:20:58,622 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:20:58,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:20:58 BoogieIcfgContainer [2022-02-01 00:20:58,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:20:58,633 INFO L158 Benchmark]: Toolchain (without parser) took 1606.80ms. Allocated memory was 198.2MB in the beginning and 292.6MB in the end (delta: 94.4MB). Free memory was 142.0MB in the beginning and 200.8MB in the end (delta: -58.8MB). Peak memory consumption was 36.3MB. Max. memory is 8.0GB. [2022-02-01 00:20:58,633 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 198.2MB. Free memory is still 158.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:20:58,633 INFO L158 Benchmark]: CACSL2BoogieTranslator took 282.27ms. Allocated memory was 198.2MB in the beginning and 292.6MB in the end (delta: 94.4MB). Free memory was 141.9MB in the beginning and 263.7MB in the end (delta: -121.8MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-02-01 00:20:58,634 INFO L158 Benchmark]: Boogie Preprocessor took 49.16ms. Allocated memory is still 292.6MB. Free memory was 263.7MB in the beginning and 261.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-01 00:20:58,634 INFO L158 Benchmark]: RCFGBuilder took 486.64ms. Allocated memory is still 292.6MB. Free memory was 261.6MB in the beginning and 244.3MB in the end (delta: 17.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-02-01 00:20:58,635 INFO L158 Benchmark]: TraceAbstraction took 784.59ms. Allocated memory is still 292.6MB. Free memory was 243.8MB in the beginning and 200.8MB in the end (delta: 43.0MB). Peak memory consumption was 43.0MB. Max. memory is 8.0GB. [2022-02-01 00:20:58,637 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 198.2MB. Free memory is still 158.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 282.27ms. Allocated memory was 198.2MB in the beginning and 292.6MB in the end (delta: 94.4MB). Free memory was 141.9MB in the beginning and 263.7MB in the end (delta: -121.8MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 49.16ms. Allocated memory is still 292.6MB. Free memory was 263.7MB in the beginning and 261.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 486.64ms. Allocated memory is still 292.6MB. Free memory was 261.6MB in the beginning and 244.3MB in the end (delta: 17.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 784.59ms. Allocated memory is still 292.6MB. Free memory was 243.8MB in the beginning and 200.8MB in the end (delta: 43.0MB). Peak memory consumption was 43.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 bitwiseXor at line 33, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L128] float x = 0.0f; [L129] float y = __VERIFIER_nondet_float(); [L131] COND TRUE (y < 0.0f || y > 0.0f) [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] EXPR res == 0.0f && __signbit_float(res) == 0 [L136] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L137] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, 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, 76 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 75 mSDsluCounter, 72 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, 70 mSDtfsCounter, 78 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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 00:20:58,675 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...