/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_1270b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:21:07,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:21:07,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:21:07,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-01 00:21:07,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:21:07,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:21:07,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:21:07,817 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 00:21:07,824 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:21:07,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:21:07,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:21:07,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:21:07,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:21:07,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:21:07,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:21:07,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:21:07,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:21:07,827 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:21:07,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:21:07,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:21:07,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:21:07,828 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:21:07,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:21:07,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:21:07,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:21:07,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:21:07,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:21:07,829 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:21:07,829 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:21:08,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:21:08,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:21:08,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:21:08,069 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:21:08,069 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:21:08,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1270b.c [2022-02-01 00:21:08,116 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02b5c793a/37a9a37c38bc40a49b03515c83ae90b7/FLAGba8b48059 [2022-02-01 00:21:08,519 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:21:08,519 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1270b.c [2022-02-01 00:21:08,530 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02b5c793a/37a9a37c38bc40a49b03515c83ae90b7/FLAGba8b48059 [2022-02-01 00:21:08,545 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02b5c793a/37a9a37c38bc40a49b03515c83ae90b7 [2022-02-01 00:21:08,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:21:08,548 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:21:08,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:21:08,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:21:08,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:21:08,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:21:08" (1/1) ... [2022-02-01 00:21:08,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17a81aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:08, skipping insertion in model container [2022-02-01 00:21:08,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:21:08" (1/1) ... [2022-02-01 00:21:08,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:21:08,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:21:08,800 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_1270b.c[4704,4717] [2022-02-01 00:21:08,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:21:08,813 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:21:08,852 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_1270b.c[4704,4717] [2022-02-01 00:21:08,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:21:08,876 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:21:08,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:08 WrapperNode [2022-02-01 00:21:08,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:21:08,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:21:08,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:21:08,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:21:08,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:08" (1/1) ... [2022-02-01 00:21:08,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:08" (1/1) ... [2022-02-01 00:21:08,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:08" (1/1) ... [2022-02-01 00:21:08,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:08" (1/1) ... [2022-02-01 00:21:08,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:08" (1/1) ... [2022-02-01 00:21:08,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:08" (1/1) ... [2022-02-01 00:21:08,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:08" (1/1) ... [2022-02-01 00:21:08,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:21:08,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:21:08,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:21:08,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:21:08,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:08" (1/1) ... [2022-02-01 00:21:08,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:21:08,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:21:08,984 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 00:21:08,988 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 00:21:09,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:21:09,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:21:09,013 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:21:09,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2022-02-01 00:21:09,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_hypotf [2022-02-01 00:21:09,013 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2022-02-01 00:21:09,014 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:21:09,014 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:21:09,014 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:21:09,014 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:21:09,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:21:09,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-02-01 00:21:09,014 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2022-02-01 00:21:09,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-01 00:21:09,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-02-01 00:21:09,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:21:09,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:21:09,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:21:09,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-02-01 00:21:09,015 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_hypotf [2022-02-01 00:21:09,015 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2022-02-01 00:21:09,015 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:21:09,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:21:09,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:21:09,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:21:09,113 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:21:09,115 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:21:09,527 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:21:09,536 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:21:09,536 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2022-02-01 00:21:09,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:21:09 BoogieIcfgContainer [2022-02-01 00:21:09,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:21:09,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:21:09,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:21:09,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:21:09,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:21:08" (1/3) ... [2022-02-01 00:21:09,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@405e0e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:21:09, skipping insertion in model container [2022-02-01 00:21:09,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:21:08" (2/3) ... [2022-02-01 00:21:09,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@405e0e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:21:09, skipping insertion in model container [2022-02-01 00:21:09,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:21:09" (3/3) ... [2022-02-01 00:21:09,546 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1270b.c [2022-02-01 00:21:09,553 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:21:09,554 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:21:09,601 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:21:09,608 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 00:21:09,608 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:21:09,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 89 states have (on average 1.651685393258427) internal successors, (147), 90 states have internal predecessors, (147), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-01 00:21:09,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-01 00:21:09,640 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:21:09,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:21:09,641 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:21:09,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:21:09,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1772598028, now seen corresponding path program 1 times [2022-02-01 00:21:09,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:21:09,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385631688] [2022-02-01 00:21:09,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:21:09,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:21:09,710 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:21:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:21:09,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:21:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:21:09,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-01 00:21:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:21:09,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-01 00:21:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:21:09,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-01 00:21:09,913 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:21:09,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385631688] [2022-02-01 00:21:09,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1385631688] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:21:09,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:21:09,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-01 00:21:09,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233603610] [2022-02-01 00:21:09,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:21:09,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-01 00:21:09,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:21:09,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-01 00:21:09,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-01 00:21:09,950 INFO L87 Difference]: Start difference. First operand has 102 states, 89 states have (on average 1.651685393258427) internal successors, (147), 90 states have internal predecessors, (147), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-01 00:21:10,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:21:10,284 INFO L93 Difference]: Finished difference Result 196 states and 313 transitions. [2022-02-01 00:21:10,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-01 00:21:10,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2022-02-01 00:21:10,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:21:10,299 INFO L225 Difference]: With dead ends: 196 [2022-02-01 00:21:10,299 INFO L226 Difference]: Without dead ends: 98 [2022-02-01 00:21:10,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-01 00:21:10,307 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 111 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-01 00:21:10,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 118 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-01 00:21:10,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-02-01 00:21:10,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-02-01 00:21:10,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 87 states have (on average 1.2528735632183907) internal successors, (109), 87 states have internal predecessors, (109), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-01 00:21:10,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 120 transitions. [2022-02-01 00:21:10,356 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 120 transitions. Word has length 28 [2022-02-01 00:21:10,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:21:10,356 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 120 transitions. [2022-02-01 00:21:10,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-01 00:21:10,356 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 120 transitions. [2022-02-01 00:21:10,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-01 00:21:10,358 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:21:10,358 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:21:10,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:21:10,358 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:21:10,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:21:10,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1334305327, now seen corresponding path program 1 times [2022-02-01 00:21:10,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:21:10,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665162181] [2022-02-01 00:21:10,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:21:10,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:21:10,363 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:21:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:21:10,438 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:21:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:21:10,506 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:21:10,508 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:21:10,512 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:21:10,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:21:10,517 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:21:10,519 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:21:10,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:21:10 BoogieIcfgContainer [2022-02-01 00:21:10,537 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:21:10,539 INFO L158 Benchmark]: Toolchain (without parser) took 1989.71ms. Allocated memory was 196.1MB in the beginning and 285.2MB in the end (delta: 89.1MB). Free memory was 141.6MB in the beginning and 171.6MB in the end (delta: -30.0MB). Peak memory consumption was 59.5MB. Max. memory is 8.0GB. [2022-02-01 00:21:10,539 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 196.1MB. Free memory is still 157.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:21:10,540 INFO L158 Benchmark]: CACSL2BoogieTranslator took 327.22ms. Allocated memory was 196.1MB in the beginning and 285.2MB in the end (delta: 89.1MB). Free memory was 141.3MB in the beginning and 254.0MB in the end (delta: -112.6MB). Peak memory consumption was 7.9MB. Max. memory is 8.0GB. [2022-02-01 00:21:10,543 INFO L158 Benchmark]: Boogie Preprocessor took 80.25ms. Allocated memory is still 285.2MB. Free memory was 254.0MB in the beginning and 251.3MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-02-01 00:21:10,544 INFO L158 Benchmark]: RCFGBuilder took 579.75ms. Allocated memory is still 285.2MB. Free memory was 251.3MB in the beginning and 228.0MB in the end (delta: 23.3MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-02-01 00:21:10,544 INFO L158 Benchmark]: TraceAbstraction took 997.46ms. Allocated memory is still 285.2MB. Free memory was 227.8MB in the beginning and 171.6MB in the end (delta: 56.1MB). Peak memory consumption was 56.6MB. Max. memory is 8.0GB. [2022-02-01 00:21:10,551 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 196.1MB. Free memory is still 157.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 327.22ms. Allocated memory was 196.1MB in the beginning and 285.2MB in the end (delta: 89.1MB). Free memory was 141.3MB in the beginning and 254.0MB in the end (delta: -112.6MB). Peak memory consumption was 7.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 80.25ms. Allocated memory is still 285.2MB. Free memory was 254.0MB in the beginning and 251.3MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 579.75ms. Allocated memory is still 285.2MB. Free memory was 251.3MB in the beginning and 228.0MB in the end (delta: 23.3MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 997.46ms. Allocated memory is still 285.2MB. Free memory was 227.8MB in the beginning and 171.6MB in the end (delta: 56.1MB). Peak memory consumption was 56.6MB. 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: 237]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 120, overapproximation of bitwiseAnd at line 220. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L231] float x = -1.0f / 0.0f; [L232] float y = __VERIFIER_nondet_float(); [L234] CALL, EXPR __ieee754_hypotf(x, y) [L84] float a = x, b = y, t1, t2, y1, y2, w; [L85] __int32_t j, k, ha, hb; [L88] ieee_float_shape_type gf_u; [L89] gf_u.value = (x) [L90] EXPR gf_u.word [L90] (ha) = gf_u.word [L92] ha &= 0x7fffffffL [L94] ieee_float_shape_type gf_u; [L95] gf_u.value = (y) [L96] EXPR gf_u.word [L96] (hb) = gf_u.word [L98] hb &= 0x7fffffffL [L99] COND FALSE !(hb > ha) [L106] a = x [L107] b = y [L110] ieee_float_shape_type sf_u; [L111] sf_u.word = (ha) [L112] EXPR sf_u.value [L112] (a) = sf_u.value [L115] ieee_float_shape_type sf_u; [L116] sf_u.word = (hb) [L117] EXPR sf_u.value [L117] (b) = sf_u.value [L119] COND TRUE (ha - hb) > 0xf000000L [L120] return a + b; [L234] RET, EXPR __ieee754_hypotf(x, y) [L234] float res = __ieee754_hypotf(x, y); [L236] CALL, EXPR isinf_float(res) [L214] __int32_t ix; [L216] ieee_float_shape_type gf_u; [L217] gf_u.value = (x) [L218] EXPR gf_u.word [L218] (ix) = gf_u.word [L220] ix &= 0x7fffffff [L221] return ((ix) == 0x7f800000L); [L236] RET, EXPR isinf_float(res) [L236] COND TRUE !isinf_float(res) [L237] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 105 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, 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, 114 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 111 mSDsluCounter, 118 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 123 IncrementalHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 116 mSDtfsCounter, 123 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-02-01 00:21:10,587 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...