/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:19:17,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:19:17,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:19:17,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-01 00:19:17,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:19:17,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:19:17,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:19:17,568 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-01 00:19:17,573 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:19:17,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:19:17,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:19:17,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:19:17,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:19:17,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:19:17,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:19:17,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:19:17,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:19:17,575 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:19:17,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:19:17,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:19:17,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:19:17,576 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:19:17,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:19:17,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:19:17,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:19:17,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:19:17,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:19:17,577 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:19:17,577 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:19:17,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:19:17,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:19:17,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:19:17,765 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:19:17,767 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:19:17,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2022-02-01 00:19:17,823 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70d275f27/d512888d0fe2419288905ac37c59a0ea/FLAG9b66eb107 [2022-02-01 00:19:18,173 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:19:18,173 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2022-02-01 00:19:18,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70d275f27/d512888d0fe2419288905ac37c59a0ea/FLAG9b66eb107 [2022-02-01 00:19:18,215 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70d275f27/d512888d0fe2419288905ac37c59a0ea [2022-02-01 00:19:18,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:19:18,217 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:19:18,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:19:18,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:19:18,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:19:18,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:19:18" (1/1) ... [2022-02-01 00:19:18,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51595aa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:18, skipping insertion in model container [2022-02-01 00:19:18,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:19:18" (1/1) ... [2022-02-01 00:19:18,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:19:18,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:19:18,404 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c[4166,4179] [2022-02-01 00:19:18,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:19:18,410 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:19:18,443 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c[4166,4179] [2022-02-01 00:19:18,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:19:18,453 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:19:18,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:18 WrapperNode [2022-02-01 00:19:18,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:19:18,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:19:18,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:19:18,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:19:18,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:18" (1/1) ... [2022-02-01 00:19:18,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:18" (1/1) ... [2022-02-01 00:19:18,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:18" (1/1) ... [2022-02-01 00:19:18,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:18" (1/1) ... [2022-02-01 00:19:18,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:18" (1/1) ... [2022-02-01 00:19:18,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:18" (1/1) ... [2022-02-01 00:19:18,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:18" (1/1) ... [2022-02-01 00:19:18,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:19:18,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:19:18,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:19:18,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:19:18,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:18" (1/1) ... [2022-02-01 00:19:18,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:19:18,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:19:18,550 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-01 00:19:18,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-01 00:19:18,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:19:18,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:19:18,594 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:19:18,594 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2022-02-01 00:19:18,594 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2022-02-01 00:19:18,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2022-02-01 00:19:18,595 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:19:18,595 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:19:18,595 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:19:18,595 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:19:18,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:19:18,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-02-01 00:19:18,597 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2022-02-01 00:19:18,597 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2022-02-01 00:19:18,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-01 00:19:18,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-02-01 00:19:18,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:19:18,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:19:18,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-02-01 00:19:18,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:19:18,600 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2022-02-01 00:19:18,600 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:19:18,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:19:18,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:19:18,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-02-01 00:19:18,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:19:18,694 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:19:18,695 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:19:19,071 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:19:19,076 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:19:19,076 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-02-01 00:19:19,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:19:19 BoogieIcfgContainer [2022-02-01 00:19:19,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:19:19,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:19:19,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:19:19,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:19:19,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:19:18" (1/3) ... [2022-02-01 00:19:19,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac2621c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:19:19, skipping insertion in model container [2022-02-01 00:19:19,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:18" (2/3) ... [2022-02-01 00:19:19,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac2621c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:19:19, skipping insertion in model container [2022-02-01 00:19:19,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:19:19" (3/3) ... [2022-02-01 00:19:19,087 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2022-02-01 00:19:19,093 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:19:19,093 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:19:19,125 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:19:19,130 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=QVASR [2022-02-01 00:19:19,130 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:19:19,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 64 states have (on average 1.734375) internal successors, (111), 65 states have internal predecessors, (111), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-01 00:19:19,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-01 00:19:19,154 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:19:19,155 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 00:19:19,155 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:19:19,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:19:19,158 INFO L85 PathProgramCache]: Analyzing trace with hash -605065103, now seen corresponding path program 1 times [2022-02-01 00:19:19,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:19:19,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112618229] [2022-02-01 00:19:19,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:19:19,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:19:19,204 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:19:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:19:19,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:19:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:19:19,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-01 00:19:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:19:19,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-01 00:19:19,329 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:19:19,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112618229] [2022-02-01 00:19:19,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [112618229] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:19:19,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:19:19,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-01 00:19:19,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290571096] [2022-02-01 00:19:19,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:19:19,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-01 00:19:19,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:19:19,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-01 00:19:19,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-01 00:19:19,359 INFO L87 Difference]: Start difference. First operand has 74 states, 64 states have (on average 1.734375) internal successors, (111), 65 states have internal predecessors, (111), 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 00:19:19,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:19:19,571 INFO L93 Difference]: Finished difference Result 142 states and 232 transitions. [2022-02-01 00:19:19,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-01 00:19:19,573 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 00:19:19,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:19:19,578 INFO L225 Difference]: With dead ends: 142 [2022-02-01 00:19:19,578 INFO L226 Difference]: Without dead ends: 69 [2022-02-01 00:19:19,581 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 00:19:19,583 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 99 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-01 00:19:19,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 96 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-01 00:19:19,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-02-01 00:19:19,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-02-01 00:19:19,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 61 states have (on average 1.459016393442623) internal successors, (89), 61 states have internal predecessors, (89), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-01 00:19:19,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2022-02-01 00:19:19,612 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2022-02-01 00:19:19,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:19:19,613 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2022-02-01 00:19:19,613 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 00:19:19,613 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2022-02-01 00:19:19,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-01 00:19:19,614 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:19:19,614 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 00:19:19,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:19:19,614 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:19:19,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:19:19,615 INFO L85 PathProgramCache]: Analyzing trace with hash 638815150, now seen corresponding path program 1 times [2022-02-01 00:19:19,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:19:19,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663416461] [2022-02-01 00:19:19,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:19:19,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:19:19,617 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:19:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:19:19,657 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:19:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:19:19,694 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:19:19,694 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:19:19,695 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:19:19,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:19:19,699 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:19:19,700 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:19:19,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:19:19 BoogieIcfgContainer [2022-02-01 00:19:19,709 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:19:19,709 INFO L158 Benchmark]: Toolchain (without parser) took 1491.81ms. Allocated memory was 191.9MB in the beginning and 272.6MB in the end (delta: 80.7MB). Free memory was 135.9MB in the beginning and 170.7MB in the end (delta: -34.8MB). Peak memory consumption was 45.6MB. Max. memory is 8.0GB. [2022-02-01 00:19:19,710 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 191.9MB. Free memory is still 152.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:19:19,710 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.05ms. Allocated memory was 191.9MB in the beginning and 272.6MB in the end (delta: 80.7MB). Free memory was 135.7MB in the beginning and 241.5MB in the end (delta: -105.8MB). Peak memory consumption was 6.8MB. Max. memory is 8.0GB. [2022-02-01 00:19:19,710 INFO L158 Benchmark]: Boogie Preprocessor took 34.28ms. Allocated memory is still 272.6MB. Free memory was 241.5MB in the beginning and 239.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-01 00:19:19,711 INFO L158 Benchmark]: RCFGBuilder took 588.09ms. Allocated memory is still 272.6MB. Free memory was 239.4MB in the beginning and 218.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2022-02-01 00:19:19,711 INFO L158 Benchmark]: TraceAbstraction took 630.62ms. Allocated memory is still 272.6MB. Free memory was 217.9MB in the beginning and 170.7MB in the end (delta: 47.2MB). Peak memory consumption was 47.2MB. Max. memory is 8.0GB. [2022-02-01 00:19:19,712 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 191.9MB. Free memory is still 152.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 235.05ms. Allocated memory was 191.9MB in the beginning and 272.6MB in the end (delta: 80.7MB). Free memory was 135.7MB in the beginning and 241.5MB in the end (delta: -105.8MB). Peak memory consumption was 6.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.28ms. Allocated memory is still 272.6MB. Free memory was 241.5MB in the beginning and 239.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 588.09ms. Allocated memory is still 272.6MB. Free memory was 239.4MB in the beginning and 218.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 630.62ms. Allocated memory is still 272.6MB. Free memory was 217.9MB in the beginning and 170.7MB in the end (delta: 47.2MB). Peak memory consumption was 47.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 193]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 192, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L184] double x = 0.0; [L185] double y = __VERIFIER_nondet_double(); [L187] COND TRUE y < 0.0 || y > 0.0 [L189] CALL, EXPR fmod_double(x, y) [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); [L189] RET, EXPR fmod_double(x, y) [L189] double res = fmod_double(x, y); [L192] EXPR res == 0.0 && __signbit_double(res) == 0 [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L193] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 100 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 99 mSDsluCounter, 96 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 102 IncrementalHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 94 mSDtfsCounter, 102 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=74occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-02-01 00:19:19,737 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...