/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_1130b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:20:56,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:20:56,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:20:56,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-01 00:20:56,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-01 00:20:56,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-01 00:20:56,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-01 00:20:56,775 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-01 00:20:56,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-01 00:20:56,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-01 00:20:56,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-01 00:20:56,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-01 00:20:56,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-01 00:20:56,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-01 00:20:56,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-01 00:20:56,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-01 00:20:56,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-01 00:20:56,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:20:56,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:20:56,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:20:56,806 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 00:20:56,811 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:20:56,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:20:56,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:20:56,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:20:56,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:20:56,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:20:56,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:20:56,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:20:56,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:20:56,813 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:20:56,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:20:56,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:20:56,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:20:56,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:20:56,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:20:56,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:20:56,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:20:56,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:20:56,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:20:56,814 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:20:56,814 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:20:56,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:20:56,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:20:56,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:20:56,979 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:20:56,980 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:20:56,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130b.c [2022-02-01 00:20:57,021 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40a9f71ea/affe63a889cb4117ae10c252a0f0fe47/FLAGdb01aa125 [2022-02-01 00:20:57,380 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:20:57,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1130b.c [2022-02-01 00:20:57,390 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40a9f71ea/affe63a889cb4117ae10c252a0f0fe47/FLAGdb01aa125 [2022-02-01 00:20:57,398 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40a9f71ea/affe63a889cb4117ae10c252a0f0fe47 [2022-02-01 00:20:57,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:20:57,401 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:20:57,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:20:57,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:20:57,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:20:57,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:20:57" (1/1) ... [2022-02-01 00:20:57,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7999b15c 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 00:20:57,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:20:57" (1/1) ... [2022-02-01 00:20:57,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:20:57,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:20:57,561 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_1130b.c[2909,2922] [2022-02-01 00:20:57,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:20:57,567 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:20:57,589 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_1130b.c[2909,2922] [2022-02-01 00:20:57,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:20:57,598 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:20:57,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:57 WrapperNode [2022-02-01 00:20:57,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:20:57,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:20:57,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:20:57,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:20:57,607 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 00:20:57,607 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 00:20:57,612 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 00:20:57,613 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 00:20:57,626 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 00:20:57,630 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 00:20:57,636 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 00:20:57,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:20:57,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:20:57,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:20:57,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:20:57,640 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 00:20:57,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:20:57,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:20:57,673 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 00:20:57,690 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 00:20:57,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:20:57,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:20:57,701 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:20:57,702 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2022-02-01 00:20:57,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2022-02-01 00:20:57,702 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:20:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:20:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:20:57,703 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:20:57,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:20:57,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-02-01 00:20:57,703 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2022-02-01 00:20:57,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-01 00:20:57,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-02-01 00:20:57,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:20:57,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:20:57,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-02-01 00:20:57,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:20:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2022-02-01 00:20:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:20:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:20:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:20:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-02-01 00:20:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:20:57,774 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:20:57,775 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:20:57,975 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:20:57,981 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:20:57,981 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-02-01 00:20:57,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:20:57 BoogieIcfgContainer [2022-02-01 00:20:57,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:20:57,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:20:57,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:20:57,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:20:57,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:20:57" (1/3) ... [2022-02-01 00:20:57,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba9ddf6 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 00:20:57,987 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 00:20:57,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba9ddf6 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 00:20:57,987 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 00:20:57,988 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130b.c [2022-02-01 00:20:57,991 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:20:57,991 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:20:58,026 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:20:58,032 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 00:20:58,032 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:20:58,043 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 00:20:58,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-01 00:20:58,052 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:20:58,053 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 00:20:58,053 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:20:58,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:20:58,057 INFO L85 PathProgramCache]: Analyzing trace with hash -684118545, now seen corresponding path program 1 times [2022-02-01 00:20:58,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:20:58,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026216984] [2022-02-01 00:20:58,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:20:58,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:20:58,101 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:20:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:20:58,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:20:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:20:58,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-01 00:20:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:20:58,196 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 00:20:58,197 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:20:58,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026216984] [2022-02-01 00:20:58,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1026216984] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:20:58,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:20:58,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-01 00:20:58,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940683290] [2022-02-01 00:20:58,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:20:58,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-01 00:20:58,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:20:58,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-01 00:20:58,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-01 00:20:58,220 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 00:20:58,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:20:58,469 INFO L93 Difference]: Finished difference Result 116 states and 180 transitions. [2022-02-01 00:20:58,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-01 00:20:58,472 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 00:20:58,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:20:58,477 INFO L225 Difference]: With dead ends: 116 [2022-02-01 00:20:58,477 INFO L226 Difference]: Without dead ends: 56 [2022-02-01 00:20:58,480 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 00:20:58,485 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 00:20:58,486 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 00:20:58,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-02-01 00:20:58,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-02-01 00:20:58,525 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 00:20:58,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2022-02-01 00:20:58,527 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 19 [2022-02-01 00:20:58,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:20:58,527 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2022-02-01 00:20:58,527 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 00:20:58,528 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2022-02-01 00:20:58,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-01 00:20:58,528 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:20:58,528 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 00:20:58,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:20:58,529 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:20:58,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:20:58,529 INFO L85 PathProgramCache]: Analyzing trace with hash -799690004, now seen corresponding path program 1 times [2022-02-01 00:20:58,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:20:58,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234051640] [2022-02-01 00:20:58,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:20:58,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:20:58,532 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:20:58,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:20:58,607 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:20:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:20:58,651 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:20:58,651 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:20:58,653 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:20:58,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:20:58,656 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:20:58,658 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:20:58,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:20:58 BoogieIcfgContainer [2022-02-01 00:20:58,666 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:20:58,667 INFO L158 Benchmark]: Toolchain (without parser) took 1265.80ms. Allocated memory is still 202.4MB. Free memory was 153.7MB in the beginning and 115.9MB in the end (delta: 37.8MB). Peak memory consumption was 38.2MB. Max. memory is 8.0GB. [2022-02-01 00:20:58,667 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 202.4MB. Free memory was 170.0MB in the beginning and 169.9MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:20:58,667 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.22ms. Allocated memory is still 202.4MB. Free memory was 153.4MB in the beginning and 177.8MB in the end (delta: -24.4MB). Peak memory consumption was 8.9MB. Max. memory is 8.0GB. [2022-02-01 00:20:58,668 INFO L158 Benchmark]: Boogie Preprocessor took 38.78ms. Allocated memory is still 202.4MB. Free memory was 177.8MB in the beginning and 175.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-01 00:20:58,668 INFO L158 Benchmark]: RCFGBuilder took 344.08ms. Allocated memory is still 202.4MB. Free memory was 175.7MB in the beginning and 159.5MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-02-01 00:20:58,668 INFO L158 Benchmark]: TraceAbstraction took 682.40ms. Allocated memory is still 202.4MB. Free memory was 159.0MB in the beginning and 115.9MB in the end (delta: 43.0MB). Peak memory consumption was 43.0MB. Max. memory is 8.0GB. [2022-02-01 00:20:58,670 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 202.4MB. Free memory was 170.0MB in the beginning and 169.9MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 195.22ms. Allocated memory is still 202.4MB. Free memory was 153.4MB in the beginning and 177.8MB in the end (delta: -24.4MB). Peak memory consumption was 8.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.78ms. Allocated memory is still 202.4MB. Free memory was 177.8MB in the beginning and 175.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 344.08ms. Allocated memory is still 202.4MB. Free memory was 175.7MB in the beginning and 159.5MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 682.40ms. Allocated memory is still 202.4MB. Free memory was 159.0MB in the beginning and 115.9MB 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 someUnaryFLOAToperation at line 128, 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) == 1 [L136] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L137] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, 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 00:20:58,699 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...