/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_1122b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:19:16,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:19:16,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:19:16,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-01 00:19:16,968 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-01 00:19:16,980 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:19:16,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:19:16,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:19:16,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:19:16,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:19:16,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:19:16,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:19:16,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:19:16,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:19:16,983 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:19:16,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:19:16,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:19:16,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:19:16,984 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:19:16,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:19:16,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:19:16,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:19:16,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:19:16,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:19:16,984 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:19:16,984 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:19:17,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:19:17,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:19:17,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:19:17,162 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:19:17,164 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:19:17,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1122b.c [2022-02-01 00:19:17,220 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88cbd4ff3/bcdeb75ac9cf4fa390b4c7907505179d/FLAG243df551e [2022-02-01 00:19:17,600 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:19:17,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1122b.c [2022-02-01 00:19:17,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88cbd4ff3/bcdeb75ac9cf4fa390b4c7907505179d/FLAG243df551e [2022-02-01 00:19:17,614 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88cbd4ff3/bcdeb75ac9cf4fa390b4c7907505179d [2022-02-01 00:19:17,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:19:17,616 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:19:17,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:19:17,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:19:17,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:19:17,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:19:17" (1/1) ... [2022-02-01 00:19:17,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13c91e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:17, skipping insertion in model container [2022-02-01 00:19:17,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:19:17" (1/1) ... [2022-02-01 00:19:17,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:19:17,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:19:17,865 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_1122b.c[3907,3920] [2022-02-01 00:19:17,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:19:17,880 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:19:17,927 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_1122b.c[3907,3920] [2022-02-01 00:19:17,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:19:17,940 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:19:17,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:17 WrapperNode [2022-02-01 00:19:17,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:19:17,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:19:17,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:19:17,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:19:17,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:17" (1/1) ... [2022-02-01 00:19:17,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:17" (1/1) ... [2022-02-01 00:19:17,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:17" (1/1) ... [2022-02-01 00:19:17,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:17" (1/1) ... [2022-02-01 00:19:17,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:17" (1/1) ... [2022-02-01 00:19:17,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:17" (1/1) ... [2022-02-01 00:19:17,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:17" (1/1) ... [2022-02-01 00:19:17,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:19:17,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:19:17,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:19:17,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:19:18,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:17" (1/1) ... [2022-02-01 00:19:18,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:19:18,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:19:18,040 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-01 00:19:18,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-01 00:19:18,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:19:18,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:19:18,070 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:19:18,070 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2022-02-01 00:19:18,070 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2022-02-01 00:19:18,070 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:19:18,070 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:19:18,070 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:19:18,070 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:19:18,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:19:18,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-02-01 00:19:18,071 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2022-02-01 00:19:18,071 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2022-02-01 00:19:18,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-01 00:19:18,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-02-01 00:19:18,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:19:18,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:19:18,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-02-01 00:19:18,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:19:18,074 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:19:18,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:19:18,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:19:18,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-02-01 00:19:18,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:19:18,168 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:19:18,169 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:19:18,445 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:19:18,450 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:19:18,450 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-02-01 00:19:18,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:19:18 BoogieIcfgContainer [2022-02-01 00:19:18,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:19:18,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:19:18,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:19:18,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:19:18,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:19:17" (1/3) ... [2022-02-01 00:19:18,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63490902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:19:18, skipping insertion in model container [2022-02-01 00:19:18,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:19:17" (2/3) ... [2022-02-01 00:19:18,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63490902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:19:18, skipping insertion in model container [2022-02-01 00:19:18,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:19:18" (3/3) ... [2022-02-01 00:19:18,458 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1122b.c [2022-02-01 00:19:18,462 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:19:18,462 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:19:18,494 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:19:18,499 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=QVASR [2022-02-01 00:19:18,499 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:19:18,510 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 58 states have (on average 1.7413793103448276) internal successors, (101), 59 states have internal predecessors, (101), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-01 00:19:18,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-01 00:19:18,519 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:19:18,519 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 00:19:18,519 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:19:18,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:19:18,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1002246117, now seen corresponding path program 1 times [2022-02-01 00:19:18,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:19:18,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651740892] [2022-02-01 00:19:18,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:19:18,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:19:18,572 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:19:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:19:18,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:19:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:19:18,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-01 00:19:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:19:18,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-01 00:19:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:19:18,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-01 00:19:18,770 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:19:18,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651740892] [2022-02-01 00:19:18,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1651740892] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:19:18,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:19:18,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-01 00:19:18,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115299292] [2022-02-01 00:19:18,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:19:18,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-01 00:19:18,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:19:18,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-01 00:19:18,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-01 00:19:18,803 INFO L87 Difference]: Start difference. First operand has 68 states, 58 states have (on average 1.7413793103448276) internal successors, (101), 59 states have internal predecessors, (101), 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 00:19:19,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:19:19,047 INFO L93 Difference]: Finished difference Result 128 states and 210 transitions. [2022-02-01 00:19:19,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-01 00:19:19,049 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 00:19:19,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:19:19,054 INFO L225 Difference]: With dead ends: 128 [2022-02-01 00:19:19,054 INFO L226 Difference]: Without dead ends: 64 [2022-02-01 00:19:19,057 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 00:19:19,059 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 87 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-01 00:19:19,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 89 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-01 00:19:19,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-02-01 00:19:19,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-02-01 00:19:19,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 56 states have internal predecessors, (83), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-01 00:19:19,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2022-02-01 00:19:19,093 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 22 [2022-02-01 00:19:19,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:19:19,094 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2022-02-01 00:19:19,094 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 00:19:19,094 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2022-02-01 00:19:19,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-01 00:19:19,095 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:19:19,095 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 00:19:19,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:19:19,095 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:19:19,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:19:19,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1368729192, now seen corresponding path program 1 times [2022-02-01 00:19:19,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:19:19,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056326232] [2022-02-01 00:19:19,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:19:19,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:19:19,098 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:19:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:19:19,150 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:19:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:19:19,188 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:19:19,188 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:19:19,192 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:19:19,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:19:19,197 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:19:19,199 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:19:19,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:19:19 BoogieIcfgContainer [2022-02-01 00:19:19,209 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:19:19,209 INFO L158 Benchmark]: Toolchain (without parser) took 1592.49ms. Allocated memory was 189.8MB in the beginning and 250.6MB in the end (delta: 60.8MB). Free memory was 140.4MB in the beginning and 208.6MB in the end (delta: -68.2MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:19:19,209 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 189.8MB. Free memory was 156.8MB in the beginning and 156.7MB in the end (delta: 111.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:19:19,210 INFO L158 Benchmark]: CACSL2BoogieTranslator took 322.66ms. Allocated memory was 189.8MB in the beginning and 250.6MB in the end (delta: 60.8MB). Free memory was 140.3MB in the beginning and 224.9MB in the end (delta: -84.6MB). Peak memory consumption was 6.6MB. Max. memory is 8.0GB. [2022-02-01 00:19:19,210 INFO L158 Benchmark]: Boogie Preprocessor took 57.20ms. Allocated memory is still 250.6MB. Free memory was 224.9MB in the beginning and 222.4MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-02-01 00:19:19,210 INFO L158 Benchmark]: RCFGBuilder took 452.48ms. Allocated memory is still 250.6MB. Free memory was 222.4MB in the beginning and 203.9MB in the end (delta: 18.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-02-01 00:19:19,211 INFO L158 Benchmark]: TraceAbstraction took 755.67ms. Allocated memory is still 250.6MB. Free memory was 203.6MB in the beginning and 208.6MB in the end (delta: -5.0MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:19:19,212 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 189.8MB. Free memory was 156.8MB in the beginning and 156.7MB in the end (delta: 111.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 322.66ms. Allocated memory was 189.8MB in the beginning and 250.6MB in the end (delta: 60.8MB). Free memory was 140.3MB in the beginning and 224.9MB in the end (delta: -84.6MB). Peak memory consumption was 6.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 57.20ms. Allocated memory is still 250.6MB. Free memory was 224.9MB in the beginning and 222.4MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 452.48ms. Allocated memory is still 250.6MB. Free memory was 222.4MB in the beginning and 203.9MB in the end (delta: 18.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 755.67ms. Allocated memory is still 250.6MB. Free memory was 203.6MB in the beginning and 208.6MB in the end (delta: -5.0MB). There was no memory consumed. 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: 178]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L172] double x = -1.0 / 0.0; [L173] double y = __VERIFIER_nondet_double(); [L174] CALL, EXPR fmod_double(x, y) [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); [L174] RET, EXPR fmod_double(x, y) [L174] double res = fmod_double(x, y); [L177] CALL, EXPR isnan_double(res) [L18] return x != x; [L177] RET, EXPR isnan_double(res) [L177] COND TRUE !isnan_double(res) [L178] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 88 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 87 mSDsluCounter, 89 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 94 IncrementalHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 87 mSDtfsCounter, 94 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=68occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-02-01 00:19:19,235 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...