/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_0681a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:18:23,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:18:23,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:18:23,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-01 00:18:23,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:18:23,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:18:23,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:18:23,861 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 00:18:23,866 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:18:23,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:18:23,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:18:23,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:18:23,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:18:23,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:18:23,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:18:23,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:18:23,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:18:23,867 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:18:23,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:18:23,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:18:23,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:18:23,868 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:18:23,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:18:23,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:18:23,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:18:23,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:18:23,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:18:23,868 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:18:23,868 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:18:24,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:18:24,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:18:24,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:18:24,095 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:18:24,096 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:18:24,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0681a.c [2022-02-01 00:18:24,157 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eb90b9dd/a4327a5a48fd449dae351b5f0dfb68f2/FLAGdf6d37215 [2022-02-01 00:18:24,587 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:18:24,587 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0681a.c [2022-02-01 00:18:24,613 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eb90b9dd/a4327a5a48fd449dae351b5f0dfb68f2/FLAGdf6d37215 [2022-02-01 00:18:24,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eb90b9dd/a4327a5a48fd449dae351b5f0dfb68f2 [2022-02-01 00:18:25,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:18:25,015 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:18:25,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:18:25,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:18:25,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:18:25,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:18:25" (1/1) ... [2022-02-01 00:18:25,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ef77a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:25, skipping insertion in model container [2022-02-01 00:18:25,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:18:25" (1/1) ... [2022-02-01 00:18:25,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:18:25,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:18:25,325 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_0681a.c[6389,6402] [2022-02-01 00:18:25,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:18:25,346 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:18:25,412 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_0681a.c[6389,6402] [2022-02-01 00:18:25,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:18:25,448 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:18:25,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:25 WrapperNode [2022-02-01 00:18:25,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:18:25,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:18:25,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:18:25,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:18:25,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:25" (1/1) ... [2022-02-01 00:18:25,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:25" (1/1) ... [2022-02-01 00:18:25,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:25" (1/1) ... [2022-02-01 00:18:25,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:25" (1/1) ... [2022-02-01 00:18:25,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:25" (1/1) ... [2022-02-01 00:18:25,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:25" (1/1) ... [2022-02-01 00:18:25,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:25" (1/1) ... [2022-02-01 00:18:25,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:18:25,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:18:25,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:18:25,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:18:25,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:25" (1/1) ... [2022-02-01 00:18:25,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:18:25,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:18:25,599 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 00:18:25,618 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 00:18:25,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:18:25,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:18:25,658 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:18:25,658 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2022-02-01 00:18:25,658 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2022-02-01 00:18:25,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2022-02-01 00:18:25,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2022-02-01 00:18:25,658 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:18:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:18:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:18:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:18:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:18:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-02-01 00:18:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2022-02-01 00:18:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-01 00:18:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-02-01 00:18:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:18:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:18:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:18:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-02-01 00:18:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2022-02-01 00:18:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2022-02-01 00:18:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2022-02-01 00:18:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:18:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:18:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:18:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-02-01 00:18:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:18:25,803 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:18:25,804 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:18:26,383 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:18:26,388 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:18:26,388 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2022-02-01 00:18:26,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:18:26 BoogieIcfgContainer [2022-02-01 00:18:26,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:18:26,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:18:26,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:18:26,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:18:26,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:18:25" (1/3) ... [2022-02-01 00:18:26,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732efa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:18:26, skipping insertion in model container [2022-02-01 00:18:26,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:25" (2/3) ... [2022-02-01 00:18:26,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732efa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:18:26, skipping insertion in model container [2022-02-01 00:18:26,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:18:26" (3/3) ... [2022-02-01 00:18:26,414 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0681a.c [2022-02-01 00:18:26,418 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:18:26,418 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:18:26,474 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:18:26,485 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 00:18:26,486 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:18:26,502 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 94 states have (on average 1.627659574468085) internal successors, (153), 95 states have internal predecessors, (153), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-02-01 00:18:26,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-01 00:18:26,533 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:18:26,533 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 00:18:26,534 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:18:26,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:18:26,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1160092900, now seen corresponding path program 1 times [2022-02-01 00:18:26,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:18:26,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770093531] [2022-02-01 00:18:26,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:18:26,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:18:26,656 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:18:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:18:26,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:18:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:18:26,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-01 00:18:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:18:26,918 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 00:18:26,919 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:18:26,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770093531] [2022-02-01 00:18:26,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [770093531] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:18:26,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:18:26,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-01 00:18:26,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371195060] [2022-02-01 00:18:26,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:18:26,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-01 00:18:26,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:18:26,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-01 00:18:26,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-01 00:18:26,955 INFO L87 Difference]: Start difference. First operand has 110 states, 94 states have (on average 1.627659574468085) internal successors, (153), 95 states have internal predecessors, (153), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) 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 00:18:27,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:18:27,311 INFO L93 Difference]: Finished difference Result 212 states and 335 transitions. [2022-02-01 00:18:27,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-01 00:18:27,313 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 00:18:27,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:18:27,319 INFO L225 Difference]: With dead ends: 212 [2022-02-01 00:18:27,319 INFO L226 Difference]: Without dead ends: 106 [2022-02-01 00:18:27,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-01 00:18:27,324 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 133 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-01 00:18:27,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 140 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-01 00:18:27,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-02-01 00:18:27,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-02-01 00:18:27,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 92 states have (on average 1.423913043478261) internal successors, (131), 92 states have internal predecessors, (131), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-01 00:18:27,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 146 transitions. [2022-02-01 00:18:27,365 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 146 transitions. Word has length 19 [2022-02-01 00:18:27,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:18:27,365 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 146 transitions. [2022-02-01 00:18:27,365 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 00:18:27,366 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 146 transitions. [2022-02-01 00:18:27,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-01 00:18:27,366 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:18:27,366 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 00:18:27,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:18:27,367 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:18:27,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:18:27,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1249585093, now seen corresponding path program 1 times [2022-02-01 00:18:27,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:18:27,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668359395] [2022-02-01 00:18:27,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:18:27,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:18:27,369 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:18:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:18:27,404 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:18:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:18:27,446 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:18:27,446 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:18:27,449 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:18:27,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:18:27,453 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:18:27,455 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:18:27,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:18:27 BoogieIcfgContainer [2022-02-01 00:18:27,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:18:27,471 INFO L158 Benchmark]: Toolchain (without parser) took 2455.86ms. Allocated memory was 217.1MB in the beginning and 294.6MB in the end (delta: 77.6MB). Free memory was 162.1MB in the beginning and 155.6MB in the end (delta: 6.4MB). Peak memory consumption was 83.5MB. Max. memory is 8.0GB. [2022-02-01 00:18:27,471 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 217.1MB. Free memory is still 178.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:18:27,471 INFO L158 Benchmark]: CACSL2BoogieTranslator took 430.43ms. Allocated memory was 217.1MB in the beginning and 294.6MB in the end (delta: 77.6MB). Free memory was 161.9MB in the beginning and 262.1MB in the end (delta: -100.2MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. [2022-02-01 00:18:27,471 INFO L158 Benchmark]: Boogie Preprocessor took 99.85ms. Allocated memory is still 294.6MB. Free memory was 262.1MB in the beginning and 258.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-02-01 00:18:27,472 INFO L158 Benchmark]: RCFGBuilder took 839.95ms. Allocated memory is still 294.6MB. Free memory was 258.9MB in the beginning and 235.9MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-02-01 00:18:27,472 INFO L158 Benchmark]: TraceAbstraction took 1063.29ms. Allocated memory is still 294.6MB. Free memory was 235.3MB in the beginning and 155.6MB in the end (delta: 79.7MB). Peak memory consumption was 79.7MB. Max. memory is 8.0GB. [2022-02-01 00:18:27,473 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 217.1MB. Free memory is still 178.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 430.43ms. Allocated memory was 217.1MB in the beginning and 294.6MB in the end (delta: 77.6MB). Free memory was 161.9MB in the beginning and 262.1MB in the end (delta: -100.2MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 99.85ms. Allocated memory is still 294.6MB. Free memory was 262.1MB in the beginning and 258.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 839.95ms. Allocated memory is still 294.6MB. Free memory was 258.9MB in the beginning and 235.9MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 1063.29ms. Allocated memory is still 294.6MB. Free memory was 235.3MB in the beginning and 155.6MB in the end (delta: 79.7MB). Peak memory consumption was 79.7MB. 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: 270]: 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 164, overapproximation of someUnaryDOUBLEoperation at line 54, overapproximation of bitwiseAnd at line 162, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of someBinaryDOUBLEComparisonOperation at line 269. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L265] double x = 0.0; [L266] double y = 0.0; [L267] CALL, EXPR __ieee754_atan2(y, x) [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff [L163-L164] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L165] return x + y; [L267] RET, EXPR __ieee754_atan2(y, x) [L267] double res = __ieee754_atan2(y, x); [L269] EXPR res == 0.0 && __signbit_double(res) == 0 [L269] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L270] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 113 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 138 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 133 mSDsluCounter, 140 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 150 IncrementalHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 138 mSDtfsCounter, 150 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred 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 00:18:27,498 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...