/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_1121a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:20:53,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:20:53,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:20:53,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-01 00:20:53,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-01 00:20:53,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-01 00:20:53,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-01 00:20:53,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-01 00:20:53,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-01 00:20:53,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-01 00:20:53,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-01 00:20:53,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-01 00:20:53,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-01 00:20:53,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-01 00:20:53,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-01 00:20:53,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-01 00:20:53,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-01 00:20:53,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:20:53,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:20:53,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:20:53,466 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-01 00:20:53,476 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:20:53,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:20:53,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:20:53,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:20:53,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:20:53,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:20:53,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:20:53,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:20:53,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:20:53,478 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:20:53,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:20:53,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:20:53,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:20:53,479 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:20:53,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:20:53,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:20:53,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:20:53,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:20:53,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:20:53,480 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:20:53,480 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:20:53,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:20:53,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:20:53,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:20:53,669 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:20:53,671 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:20:53,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1121a.c [2022-02-01 00:20:53,726 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afbdd0359/f4655a9d2a03423fb32732afb31f09ab/FLAG0e035988e [2022-02-01 00:20:54,084 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:20:54,085 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1121a.c [2022-02-01 00:20:54,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afbdd0359/f4655a9d2a03423fb32732afb31f09ab/FLAG0e035988e [2022-02-01 00:20:54,459 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afbdd0359/f4655a9d2a03423fb32732afb31f09ab [2022-02-01 00:20:54,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:20:54,462 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:20:54,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:20:54,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:20:54,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:20:54,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:20:54" (1/1) ... [2022-02-01 00:20:54,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c7a419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:54, skipping insertion in model container [2022-02-01 00:20:54,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:20:54" (1/1) ... [2022-02-01 00:20:54,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:20:54,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:20:54,637 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_1121a.c[2701,2714] [2022-02-01 00:20:54,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:20:54,643 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:20:54,661 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_1121a.c[2701,2714] [2022-02-01 00:20:54,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:20:54,672 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:20:54,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:54 WrapperNode [2022-02-01 00:20:54,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:20:54,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:20:54,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:20:54,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:20:54,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:54" (1/1) ... [2022-02-01 00:20:54,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:54" (1/1) ... [2022-02-01 00:20:54,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:54" (1/1) ... [2022-02-01 00:20:54,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:54" (1/1) ... [2022-02-01 00:20:54,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:54" (1/1) ... [2022-02-01 00:20:54,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:54" (1/1) ... [2022-02-01 00:20:54,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:54" (1/1) ... [2022-02-01 00:20:54,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:20:54,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:20:54,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:20:54,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:20:54,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:54" (1/1) ... [2022-02-01 00:20:54,747 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:20:54,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:20:54,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-01 00:20:54,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-01 00:20:54,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:20:54,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:20:54,816 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:20:54,816 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2022-02-01 00:20:54,816 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2022-02-01 00:20:54,816 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:20:54,816 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:20:54,816 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:20:54,816 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:20:54,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:20:54,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-02-01 00:20:54,817 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2022-02-01 00:20:54,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-01 00:20:54,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-02-01 00:20:54,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:20:54,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:20:54,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-02-01 00:20:54,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:20:54,817 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2022-02-01 00:20:54,817 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:20:54,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:20:54,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:20:54,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-02-01 00:20:54,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:20:54,868 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:20:54,880 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:20:55,055 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:20:55,059 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:20:55,059 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2022-02-01 00:20:55,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:20:55 BoogieIcfgContainer [2022-02-01 00:20:55,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:20:55,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:20:55,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:20:55,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:20:55,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:20:54" (1/3) ... [2022-02-01 00:20:55,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62943550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:20:55, skipping insertion in model container [2022-02-01 00:20:55,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:54" (2/3) ... [2022-02-01 00:20:55,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62943550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:20:55, skipping insertion in model container [2022-02-01 00:20:55,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:20:55" (3/3) ... [2022-02-01 00:20:55,071 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121a.c [2022-02-01 00:20:55,075 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:20:55,075 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:20:55,114 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:20:55,123 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=QVASR [2022-02-01 00:20:55,124 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:20:55,136 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 45 states have (on average 1.6666666666666667) internal successors, (75), 46 states have internal predecessors, (75), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-01 00:20:55,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-01 00:20:55,141 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:20:55,142 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] [2022-02-01 00:20:55,142 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:20:55,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:20:55,146 INFO L85 PathProgramCache]: Analyzing trace with hash 2041896525, now seen corresponding path program 1 times [2022-02-01 00:20:55,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:20:55,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771097272] [2022-02-01 00:20:55,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:20:55,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:20:55,193 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:20:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:20:55,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:20:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:20:55,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-01 00:20:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:20:55,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-01 00:20:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:20:55,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-01 00:20:55,392 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:20:55,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771097272] [2022-02-01 00:20:55,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1771097272] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:20:55,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:20:55,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-01 00:20:55,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840596493] [2022-02-01 00:20:55,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:20:55,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-01 00:20:55,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:20:55,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-01 00:20:55,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-01 00:20:55,419 INFO L87 Difference]: Start difference. First operand has 55 states, 45 states have (on average 1.6666666666666667) internal successors, (75), 46 states have internal predecessors, (75), 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 3.75) internal successors, (15), 2 states have internal predecessors, (15), 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 00:20:55,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:20:55,616 INFO L93 Difference]: Finished difference Result 102 states and 158 transitions. [2022-02-01 00:20:55,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-01 00:20:55,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 2 states have internal predecessors, (15), 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 22 [2022-02-01 00:20:55,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:20:55,628 INFO L225 Difference]: With dead ends: 102 [2022-02-01 00:20:55,628 INFO L226 Difference]: Without dead ends: 51 [2022-02-01 00:20:55,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-01 00:20:55,635 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 63 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-01 00:20:55,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 65 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-01 00:20:55,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-02-01 00:20:55,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-02-01 00:20:55,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.372093023255814) internal successors, (59), 43 states have internal predecessors, (59), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-01 00:20:55,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2022-02-01 00:20:55,673 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 22 [2022-02-01 00:20:55,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:20:55,674 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2022-02-01 00:20:55,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 2 states have internal predecessors, (15), 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 00:20:55,674 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2022-02-01 00:20:55,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-01 00:20:55,675 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:20:55,675 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] [2022-02-01 00:20:55,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:20:55,675 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:20:55,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:20:55,676 INFO L85 PathProgramCache]: Analyzing trace with hash 422514410, now seen corresponding path program 1 times [2022-02-01 00:20:55,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:20:55,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767142102] [2022-02-01 00:20:55,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:20:55,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:20:55,679 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:20:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:20:55,720 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:20:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:20:55,814 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:20:55,815 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:20:55,816 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:20:55,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:20:55,819 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:20:55,821 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:20:55,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:20:55 BoogieIcfgContainer [2022-02-01 00:20:55,829 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:20:55,829 INFO L158 Benchmark]: Toolchain (without parser) took 1366.90ms. Allocated memory is still 221.2MB. Free memory was 171.1MB in the beginning and 192.2MB in the end (delta: -21.2MB). Peak memory consumption was 35.8MB. Max. memory is 8.0GB. [2022-02-01 00:20:55,829 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 221.2MB. Free memory is still 187.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:20:55,830 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.23ms. Allocated memory is still 221.2MB. Free memory was 170.9MB in the beginning and 195.6MB in the end (delta: -24.6MB). Peak memory consumption was 8.6MB. Max. memory is 8.0GB. [2022-02-01 00:20:55,830 INFO L158 Benchmark]: Boogie Preprocessor took 51.57ms. Allocated memory is still 221.2MB. Free memory was 195.6MB in the beginning and 193.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-01 00:20:55,830 INFO L158 Benchmark]: RCFGBuilder took 335.64ms. Allocated memory is still 221.2MB. Free memory was 193.6MB in the beginning and 178.5MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-02-01 00:20:55,831 INFO L158 Benchmark]: TraceAbstraction took 767.04ms. Allocated memory is still 221.2MB. Free memory was 177.8MB in the beginning and 192.2MB in the end (delta: -14.4MB). Peak memory consumption was 42.2MB. Max. memory is 8.0GB. [2022-02-01 00:20:55,832 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 221.2MB. Free memory is still 187.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 208.23ms. Allocated memory is still 221.2MB. Free memory was 170.9MB in the beginning and 195.6MB in the end (delta: -24.6MB). Peak memory consumption was 8.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 51.57ms. Allocated memory is still 221.2MB. Free memory was 195.6MB in the beginning and 193.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 335.64ms. Allocated memory is still 221.2MB. Free memory was 193.6MB in the beginning and 178.5MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 767.04ms. Allocated memory is still 221.2MB. Free memory was 177.8MB in the beginning and 192.2MB in the end (delta: -14.4MB). Peak memory consumption was 42.2MB. 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: 125]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 110, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of bitwiseXor at line 33, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L118] float x = __VERIFIER_nondet_float(); [L119] float y = 0.0f; [L121] CALL, EXPR fmod_float(x, y) [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); [L121] RET, EXPR fmod_float(x, y) [L121] float res = fmod_float(x, y); [L124] CALL, EXPR isnan_float(res) [L110] return x != x; [L124] RET, EXPR isnan_float(res) [L124] COND TRUE !isnan_float(res) [L125] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, 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, 64 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 63 mSDsluCounter, 65 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 70 IncrementalHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 63 mSDtfsCounter, 70 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-02-01 00:20:55,873 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...