/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_0730c.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:18:37,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:18:37,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:18:37,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-01 00:18:37,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:18:37,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:18:37,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:18:37,718 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 00:18:37,725 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:18:37,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:18:37,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:18:37,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:18:37,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:18:37,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:18:37,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:18:37,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:18:37,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:18:37,728 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:18:37,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:18:37,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:18:37,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:18:37,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:18:37,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:18:37,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:18:37,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:18:37,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:18:37,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:18:37,730 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:18:37,730 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:18:37,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:18:37,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:18:37,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:18:37,927 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:18:37,928 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:18:37,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730c.c [2022-02-01 00:18:37,988 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/353c87d38/04b981f204b24b5b9d0658d54699ef54/FLAGe741510e2 [2022-02-01 00:18:38,327 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:18:38,327 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0730c.c [2022-02-01 00:18:38,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/353c87d38/04b981f204b24b5b9d0658d54699ef54/FLAGe741510e2 [2022-02-01 00:18:38,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/353c87d38/04b981f204b24b5b9d0658d54699ef54 [2022-02-01 00:18:38,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:18:38,763 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:18:38,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:18:38,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:18:38,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:18:38,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:18:38" (1/1) ... [2022-02-01 00:18:38,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32fc9637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:38, skipping insertion in model container [2022-02-01 00:18:38,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:18:38" (1/1) ... [2022-02-01 00:18:38,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:18:38,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:18:38,923 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_0730c.c[3223,3236] [2022-02-01 00:18:38,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:18:38,929 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:18:38,952 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_0730c.c[3223,3236] [2022-02-01 00:18:38,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:18:38,961 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:18:38,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:38 WrapperNode [2022-02-01 00:18:38,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:18:38,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:18:38,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:18:38,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:18:38,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:38" (1/1) ... [2022-02-01 00:18:38,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:38" (1/1) ... [2022-02-01 00:18:38,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:38" (1/1) ... [2022-02-01 00:18:38,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:38" (1/1) ... [2022-02-01 00:18:38,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:38" (1/1) ... [2022-02-01 00:18:38,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:38" (1/1) ... [2022-02-01 00:18:38,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:38" (1/1) ... [2022-02-01 00:18:38,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:18:38,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:18:38,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:18:38,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:18:39,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:38" (1/1) ... [2022-02-01 00:18:39,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:18:39,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:18:39,023 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 00:18:39,024 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 00:18:39,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:18:39,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:18:39,048 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:18:39,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2022-02-01 00:18:39,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2022-02-01 00:18:39,048 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:18:39,048 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:18:39,049 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:18:39,049 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:18:39,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:18:39,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-02-01 00:18:39,049 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2022-02-01 00:18:39,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-01 00:18:39,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-02-01 00:18:39,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:18:39,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:18:39,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:18:39,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-02-01 00:18:39,049 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2022-02-01 00:18:39,050 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:18:39,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:18:39,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:18:39,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:18:39,096 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:18:39,097 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:18:39,328 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:18:39,332 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:18:39,333 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-02-01 00:18:39,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:18:39 BoogieIcfgContainer [2022-02-01 00:18:39,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:18:39,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:18:39,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:18:39,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:18:39,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:18:38" (1/3) ... [2022-02-01 00:18:39,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3afecf93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:18:39, skipping insertion in model container [2022-02-01 00:18:39,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:38" (2/3) ... [2022-02-01 00:18:39,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3afecf93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:18:39, skipping insertion in model container [2022-02-01 00:18:39,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:18:39" (3/3) ... [2022-02-01 00:18:39,339 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2022-02-01 00:18:39,345 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:18:39,345 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:18:39,373 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:18:39,378 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 00:18:39,378 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:18:39,387 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 56 states have (on average 1.5892857142857142) internal successors, (89), 57 states have internal predecessors, (89), 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 00:18:39,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-01 00:18:39,395 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:18:39,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:18:39,395 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:18:39,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:18:39,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1542512530, now seen corresponding path program 1 times [2022-02-01 00:18:39,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:18:39,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512066763] [2022-02-01 00:18:39,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:18:39,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:18:39,456 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:18:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:18:39,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:18:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:18:39,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-01 00:18:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:18:39,620 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 00:18:39,621 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:18:39,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512066763] [2022-02-01 00:18:39,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [512066763] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:18:39,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:18:39,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-01 00:18:39,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799566927] [2022-02-01 00:18:39,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:18:39,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-01 00:18:39,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:18:39,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-01 00:18:39,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-01 00:18:39,653 INFO L87 Difference]: Start difference. First operand has 66 states, 56 states have (on average 1.5892857142857142) internal successors, (89), 57 states have internal predecessors, (89), 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 2.75) internal successors, (11), 2 states have internal predecessors, (11), 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 00:18:39,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:18:39,850 INFO L93 Difference]: Finished difference Result 124 states and 187 transitions. [2022-02-01 00:18:39,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-01 00:18:39,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 2 states have internal predecessors, (11), 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 16 [2022-02-01 00:18:39,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:18:39,857 INFO L225 Difference]: With dead ends: 124 [2022-02-01 00:18:39,857 INFO L226 Difference]: Without dead ends: 62 [2022-02-01 00:18:39,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-01 00:18:39,862 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 77 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-01 00:18:39,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 83 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-01 00:18:39,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-02-01 00:18:39,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-02-01 00:18:39,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 54 states have internal predecessors, (75), 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 00:18:39,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2022-02-01 00:18:39,889 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 16 [2022-02-01 00:18:39,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:18:39,889 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2022-02-01 00:18:39,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 2 states have internal predecessors, (11), 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 00:18:39,890 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2022-02-01 00:18:39,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-01 00:18:39,890 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:18:39,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:18:39,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:18:39,891 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:18:39,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:18:39,891 INFO L85 PathProgramCache]: Analyzing trace with hash 2116640226, now seen corresponding path program 1 times [2022-02-01 00:18:39,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:18:39,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517446182] [2022-02-01 00:18:39,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:18:39,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:18:39,893 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:18:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:18:39,912 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:18:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:18:39,938 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:18:39,938 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:18:39,940 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:18:39,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:18:39,943 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:18:39,945 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:18:39,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:18:39 BoogieIcfgContainer [2022-02-01 00:18:39,953 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:18:39,954 INFO L158 Benchmark]: Toolchain (without parser) took 1191.31ms. Allocated memory is still 188.7MB. Free memory was 140.7MB in the beginning and 103.5MB in the end (delta: 37.3MB). Peak memory consumption was 36.4MB. Max. memory is 8.0GB. [2022-02-01 00:18:39,954 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 188.7MB. Free memory was 157.2MB in the beginning and 157.1MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:18:39,955 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.09ms. Allocated memory is still 188.7MB. Free memory was 140.6MB in the beginning and 164.8MB in the end (delta: -24.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-01 00:18:39,955 INFO L158 Benchmark]: Boogie Preprocessor took 25.75ms. Allocated memory is still 188.7MB. Free memory was 164.8MB in the beginning and 162.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-01 00:18:39,955 INFO L158 Benchmark]: RCFGBuilder took 346.14ms. Allocated memory is still 188.7MB. Free memory was 162.7MB in the beginning and 144.9MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-02-01 00:18:39,956 INFO L158 Benchmark]: TraceAbstraction took 618.59ms. Allocated memory is still 188.7MB. Free memory was 144.4MB in the beginning and 103.5MB in the end (delta: 40.9MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. [2022-02-01 00:18:39,957 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 188.7MB. Free memory was 157.2MB in the beginning and 157.1MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 196.09ms. Allocated memory is still 188.7MB. Free memory was 140.6MB in the beginning and 164.8MB in the end (delta: -24.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.75ms. Allocated memory is still 188.7MB. Free memory was 164.8MB in the beginning and 162.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 346.14ms. Allocated memory is still 188.7MB. Free memory was 162.7MB in the beginning and 144.9MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 618.59ms. Allocated memory is still 188.7MB. Free memory was 144.4MB in the beginning and 103.5MB in the end (delta: 40.9MB). Peak memory consumption was 40.9MB. 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: 156]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 155, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of bitwiseAnd at line 34. Possible FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L151] double x = 0.0; [L152] CALL, EXPR __ieee754_sqrt(x) [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L35] return x * x + x; [L152] RET, EXPR __ieee754_sqrt(x) [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == 0.0 && __signbit_double(res) == 0 [L155] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L156] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 78 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 77 mSDsluCounter, 83 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 85 IncrementalHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 81 mSDtfsCounter, 85 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred 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 00:18:39,991 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...