/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_0834.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:18:41,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:18:41,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:18:41,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-01 00:18:41,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:18:41,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:18:41,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:18:41,876 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 00:18:41,886 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:18:41,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:18:41,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:18:41,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:18:41,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:18:41,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:18:41,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:18:41,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:18:41,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:18:41,888 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:18:41,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:18:41,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:18:41,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:18:41,889 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:18:41,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:18:41,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:18:41,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:18:41,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:18:41,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:18:41,890 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:18:41,890 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:18:42,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:18:42,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:18:42,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:18:42,088 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:18:42,089 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:18:42,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0834.c [2022-02-01 00:18:42,140 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f73939072/1431d1df77b442bbb343bf700d6553f3/FLAG7e31b3f10 [2022-02-01 00:18:42,442 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:18:42,442 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0834.c [2022-02-01 00:18:42,446 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f73939072/1431d1df77b442bbb343bf700d6553f3/FLAG7e31b3f10 [2022-02-01 00:18:42,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f73939072/1431d1df77b442bbb343bf700d6553f3 [2022-02-01 00:18:42,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:18:42,865 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:18:42,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:18:42,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:18:42,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:18:42,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:18:42" (1/1) ... [2022-02-01 00:18:42,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@562b5709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:42, skipping insertion in model container [2022-02-01 00:18:42,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:18:42" (1/1) ... [2022-02-01 00:18:42,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:18:42,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:18:43,022 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_0834.c[4256,4269] [2022-02-01 00:18:43,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:18:43,054 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:18:43,076 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_0834.c[4256,4269] [2022-02-01 00:18:43,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:18:43,087 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:18:43,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:43 WrapperNode [2022-02-01 00:18:43,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:18:43,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:18:43,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:18:43,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:18:43,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:43" (1/1) ... [2022-02-01 00:18:43,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:43" (1/1) ... [2022-02-01 00:18:43,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:43" (1/1) ... [2022-02-01 00:18:43,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:43" (1/1) ... [2022-02-01 00:18:43,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:43" (1/1) ... [2022-02-01 00:18:43,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:43" (1/1) ... [2022-02-01 00:18:43,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:43" (1/1) ... [2022-02-01 00:18:43,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:18:43,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:18:43,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:18:43,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:18:43,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:43" (1/1) ... [2022-02-01 00:18:43,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:18:43,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:18:43,212 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 00:18:43,240 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 00:18:43,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:18:43,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:18:43,267 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:18:43,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_exp [2022-02-01 00:18:43,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2022-02-01 00:18:43,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:18:43,268 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:18:43,268 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:18:43,268 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:18:43,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:18:43,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-02-01 00:18:43,268 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_exp [2022-02-01 00:18:43,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-01 00:18:43,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-02-01 00:18:43,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:18:43,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:18:43,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-02-01 00:18:43,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:18:43,269 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2022-02-01 00:18:43,269 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:18:43,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:18:43,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:18:43,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-02-01 00:18:43,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:18:43,331 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:18:43,332 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:18:43,734 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:18:43,738 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:18:43,738 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-02-01 00:18:43,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:18:43 BoogieIcfgContainer [2022-02-01 00:18:43,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:18:43,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:18:43,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:18:43,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:18:43,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:18:42" (1/3) ... [2022-02-01 00:18:43,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409da7fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:18:43, skipping insertion in model container [2022-02-01 00:18:43,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:43" (2/3) ... [2022-02-01 00:18:43,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409da7fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:18:43, skipping insertion in model container [2022-02-01 00:18:43,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:18:43" (3/3) ... [2022-02-01 00:18:43,744 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0834.c [2022-02-01 00:18:43,748 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:18:43,748 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:18:43,775 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:18:43,779 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 00:18:43,779 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:18:43,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 46 states have (on average 1.608695652173913) internal successors, (74), 47 states have internal predecessors, (74), 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 00:18:43,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-01 00:18:43,794 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:18:43,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:18:43,795 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:18:43,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:18:43,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1290031072, now seen corresponding path program 1 times [2022-02-01 00:18:43,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:18:43,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611456180] [2022-02-01 00:18:43,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:18:43,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:18:43,849 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:18:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:18:43,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:18:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:18:43,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-01 00:18:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:18:44,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-01 00:18:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:18:44,015 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 00:18:44,016 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:18:44,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611456180] [2022-02-01 00:18:44,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1611456180] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:18:44,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:18:44,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-01 00:18:44,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070705904] [2022-02-01 00:18:44,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:18:44,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-01 00:18:44,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:18:44,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-01 00:18:44,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-01 00:18:44,043 INFO L87 Difference]: Start difference. First operand has 56 states, 46 states have (on average 1.608695652173913) internal successors, (74), 47 states have internal predecessors, (74), 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 4.5) internal successors, (18), 2 states have internal predecessors, (18), 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 00:18:44,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:18:44,299 INFO L93 Difference]: Finished difference Result 104 states and 157 transitions. [2022-02-01 00:18:44,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-01 00:18:44,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 2 states have internal predecessors, (18), 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 25 [2022-02-01 00:18:44,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:18:44,309 INFO L225 Difference]: With dead ends: 104 [2022-02-01 00:18:44,309 INFO L226 Difference]: Without dead ends: 52 [2022-02-01 00:18:44,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-01 00:18:44,316 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 58 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-01 00:18:44,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 63 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-01 00:18:44,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-02-01 00:18:44,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-02-01 00:18:44,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 44 states have internal predecessors, (56), 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 00:18:44,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2022-02-01 00:18:44,354 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 25 [2022-02-01 00:18:44,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:18:44,355 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2022-02-01 00:18:44,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 2 states have internal predecessors, (18), 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 00:18:44,357 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2022-02-01 00:18:44,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-01 00:18:44,358 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:18:44,359 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:18:44,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:18:44,359 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:18:44,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:18:44,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1769423231, now seen corresponding path program 1 times [2022-02-01 00:18:44,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:18:44,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92056378] [2022-02-01 00:18:44,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:18:44,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:18:44,371 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:18:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:18:44,486 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:18:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:18:44,577 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:18:44,577 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:18:44,582 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:18:44,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:18:44,588 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:18:44,590 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:18:44,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:18:44 BoogieIcfgContainer [2022-02-01 00:18:44,605 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:18:44,606 INFO L158 Benchmark]: Toolchain (without parser) took 1740.25ms. Allocated memory was 173.0MB in the beginning and 264.2MB in the end (delta: 91.2MB). Free memory was 116.8MB in the beginning and 150.8MB in the end (delta: -34.0MB). Peak memory consumption was 57.0MB. Max. memory is 8.0GB. [2022-02-01 00:18:44,607 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 173.0MB. Free memory is still 133.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:18:44,607 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.55ms. Allocated memory was 173.0MB in the beginning and 264.2MB in the end (delta: 91.2MB). Free memory was 116.7MB in the beginning and 235.7MB in the end (delta: -119.0MB). Peak memory consumption was 16.6MB. Max. memory is 8.0GB. [2022-02-01 00:18:44,609 INFO L158 Benchmark]: Boogie Preprocessor took 69.60ms. Allocated memory is still 264.2MB. Free memory was 235.7MB in the beginning and 233.4MB in the end (delta: 2.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-02-01 00:18:44,611 INFO L158 Benchmark]: RCFGBuilder took 581.04ms. Allocated memory is still 264.2MB. Free memory was 233.4MB in the beginning and 215.3MB in the end (delta: 18.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-02-01 00:18:44,612 INFO L158 Benchmark]: TraceAbstraction took 864.64ms. Allocated memory is still 264.2MB. Free memory was 215.3MB in the beginning and 150.8MB in the end (delta: 64.5MB). Peak memory consumption was 64.0MB. Max. memory is 8.0GB. [2022-02-01 00:18:44,616 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 173.0MB. Free memory is still 133.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 221.55ms. Allocated memory was 173.0MB in the beginning and 264.2MB in the end (delta: 91.2MB). Free memory was 116.7MB in the beginning and 235.7MB in the end (delta: -119.0MB). Peak memory consumption was 16.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 69.60ms. Allocated memory is still 264.2MB. Free memory was 235.7MB in the beginning and 233.4MB in the end (delta: 2.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 581.04ms. Allocated memory is still 264.2MB. Free memory was 233.4MB in the beginning and 215.3MB in the end (delta: 18.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 864.64ms. Allocated memory is still 264.2MB. Free memory was 215.3MB in the beginning and 150.8MB in the end (delta: 64.5MB). Peak memory consumption was 64.0MB. 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: 160]: 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 143, overapproximation of someUnaryDOUBLEoperation at line 23, overapproximation of someBinaryArithmeticDOUBLEoperation at line 73, overapproximation of bitwiseAnd at line 142, overapproximation of someBinaryDOUBLEComparisonOperation at line 72. Possible FailurePath: [L19-L44] static const double one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+300, twom1000_exp = 9.33263618503218878990e-302, o_threshold_exp = 7.09782712893383973096e+02, u_threshold_exp = -7.45133219101941108420e+02, ln2HI_exp[2] = { 6.93147180369123816490e-01, -6.93147180369123816490e-01, }, ln2LO_exp[2] = { 1.90821492927058770002e-10, -1.90821492927058770002e-10, }, invln2_exp = 1.44269504088896338700e+00, P1_exp = 1.66666666666666019037e-01, P2_exp = -2.77777777770155933842e-03, P3_exp = 6.61375632143793436117e-05, P4_exp = -1.65339022054652515390e-06, P5_exp = 4.13813679705723846039e-08; [L155] double x = 1.0 / 0.0; [L156] CALL, EXPR __ieee754_exp(x) [L47] double y, hi, lo, c, t; [L48] __int32_t k = 0, xsb; [L49] __uint32_t hx; [L52] ieee_double_shape_type gh_u; [L53] gh_u.value = (x) [L54] EXPR gh_u.parts.msw [L54] (hx) = gh_u.parts.msw [L56] xsb = (hx >> 31) & 1 [L57] hx &= 0x7fffffff [L59] COND TRUE hx >= 0x40862E42 [L60] COND FALSE !(hx >= 0x7ff00000) [L72] COND TRUE x > o_threshold_exp [L73] return huge_exp * huge_exp; [L156] RET, EXPR __ieee754_exp(x) [L156] double res = __ieee754_exp(x); [L159] CALL, EXPR isinf_double(x) [L135] __int32_t hx, lx; [L137] ieee_double_shape_type ew_u; [L138] ew_u.value = (x) [L139] EXPR ew_u.parts.msw [L139] (hx) = ew_u.parts.msw [L140] EXPR ew_u.parts.lsw [L140] (lx) = ew_u.parts.lsw [L142] hx &= 0x7fffffff [L143] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L144] hx = 0x7ff00000 - hx [L145] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L159] RET, EXPR isinf_double(x) [L159] COND TRUE !isinf_double(x) [L160] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, 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, 59 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 58 mSDsluCounter, 63 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 67 IncrementalHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 61 mSDtfsCounter, 67 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred 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 00:18:44,647 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...