/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1230.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 23:02:46,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:02:46,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:02:46,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 23:02:46,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 23:02:46,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 23:02:46,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 23:02:46,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 23:02:46,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 23:02:46,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 23:02:46,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 23:02:46,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 23:02:46,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 23:02:46,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 23:02:46,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 23:02:46,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 23:02:46,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 23:02:46,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:02:46,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:02:46,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:02:46,605 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 23:02:46,611 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:02:46,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:02:46,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:02:46,612 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 23:02:46,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:02:46,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 23:02:46,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:02:46,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:02:46,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:02:46,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:02:46,613 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 23:02:46,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:02:46,613 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:02:46,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:02:46,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:02:46,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:02:46,614 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:02:46,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:02:46,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:02:46,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:02:46,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:02:46,614 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:02:46,614 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 23:02:46,615 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:02:46,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:02:46,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:02:46,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:02:46,796 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:02:46,799 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:02:46,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1230.c [2022-01-31 23:02:46,850 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90dc8a655/d6176c8ae42341389d65f5e3bbfae625/FLAG883c316dc [2022-01-31 23:02:47,169 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:02:47,170 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1230.c [2022-01-31 23:02:47,178 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90dc8a655/d6176c8ae42341389d65f5e3bbfae625/FLAG883c316dc [2022-01-31 23:02:47,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90dc8a655/d6176c8ae42341389d65f5e3bbfae625 [2022-01-31 23:02:47,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:02:47,605 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:02:47,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:02:47,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:02:47,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:02:47,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:02:47" (1/1) ... [2022-01-31 23:02:47,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11ff2f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:47, skipping insertion in model container [2022-01-31 23:02:47,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:02:47" (1/1) ... [2022-01-31 23:02:47,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:02:47,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:02:47,752 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1230.c[1411,1424] [2022-01-31 23:02:47,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:02:47,770 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:02:47,809 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1230.c[1411,1424] [2022-01-31 23:02:47,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:02:47,820 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:02:47,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:47 WrapperNode [2022-01-31 23:02:47,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:02:47,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:02:47,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:02:47,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:02:47,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:47" (1/1) ... [2022-01-31 23:02:47,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:47" (1/1) ... [2022-01-31 23:02:47,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:47" (1/1) ... [2022-01-31 23:02:47,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:47" (1/1) ... [2022-01-31 23:02:47,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:47" (1/1) ... [2022-01-31 23:02:47,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:47" (1/1) ... [2022-01-31 23:02:47,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:47" (1/1) ... [2022-01-31 23:02:47,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:02:47,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:02:47,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:02:47,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:02:47,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:47" (1/1) ... [2022-01-31 23:02:47,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:02:47,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:02:47,917 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) [2022-01-31 23:02:47,923 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 [2022-01-31 23:02:47,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:02:47,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:02:47,939 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:02:47,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2022-01-31 23:02:47,939 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2022-01-31 23:02:47,939 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2022-01-31 23:02:47,939 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:02:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:02:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:02:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:02:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:02:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2022-01-31 23:02:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 23:02:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-01-31 23:02:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:02:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:02:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2022-01-31 23:02:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2022-01-31 23:02:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:02:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:02:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:02:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:02:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:02:47,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-01-31 23:02:47,986 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:02:47,987 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:02:48,095 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:02:48,100 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:02:48,100 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-31 23:02:48,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:02:48 BoogieIcfgContainer [2022-01-31 23:02:48,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:02:48,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:02:48,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:02:48,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:02:48,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:02:47" (1/3) ... [2022-01-31 23:02:48,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235253df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:02:48, skipping insertion in model container [2022-01-31 23:02:48,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:02:47" (2/3) ... [2022-01-31 23:02:48,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235253df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:02:48, skipping insertion in model container [2022-01-31 23:02:48,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:02:48" (3/3) ... [2022-01-31 23:02:48,107 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2022-01-31 23:02:48,110 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:02:48,110 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 23:02:48,154 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:02:48,177 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=JORDAN [2022-01-31 23:02:48,178 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 23:02:48,196 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 28 states have internal predecessors, (38), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 23:02:48,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-31 23:02:48,210 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:02:48,210 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] [2022-01-31 23:02:48,211 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:02:48,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:02:48,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1452657676, now seen corresponding path program 1 times [2022-01-31 23:02:48,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:02:48,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164206591] [2022-01-31 23:02:48,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:02:48,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:02:48,261 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:02:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:48,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:02:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:48,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:02:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:48,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:02:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:48,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 23:02:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:48,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:02:48,439 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:02:48,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164206591] [2022-01-31 23:02:48,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1164206591] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:02:48,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:02:48,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 23:02:48,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318462582] [2022-01-31 23:02:48,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:02:48,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 23:02:48,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:02:48,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 23:02:48,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 23:02:48,466 INFO L87 Difference]: Start difference. First operand has 40 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 28 states have internal predecessors, (38), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 23:02:48,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:02:48,606 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2022-01-31 23:02:48,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 23:02:48,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2022-01-31 23:02:48,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:02:48,617 INFO L225 Difference]: With dead ends: 71 [2022-01-31 23:02:48,617 INFO L226 Difference]: Without dead ends: 36 [2022-01-31 23:02:48,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 23:02:48,625 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 37 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:02:48,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 43 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 23:02:48,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-31 23:02:48,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-01-31 23:02:48,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 23:02:48,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2022-01-31 23:02:48,669 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2022-01-31 23:02:48,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:02:48,670 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2022-01-31 23:02:48,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 23:02:48,670 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2022-01-31 23:02:48,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-31 23:02:48,674 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:02:48,674 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] [2022-01-31 23:02:48,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:02:48,675 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:02:48,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:02:48,678 INFO L85 PathProgramCache]: Analyzing trace with hash 2013628271, now seen corresponding path program 1 times [2022-01-31 23:02:48,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:02:48,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23497867] [2022-01-31 23:02:48,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:02:48,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:02:48,681 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:02:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:48,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:02:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:48,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:02:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:48,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:02:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:48,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 23:02:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:48,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:02:48,855 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:02:48,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23497867] [2022-01-31 23:02:48,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [23497867] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:02:48,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:02:48,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 23:02:48,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754035802] [2022-01-31 23:02:48,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:02:48,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 23:02:48,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:02:48,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 23:02:48,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 23:02:48,857 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 23:02:49,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:02:49,004 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2022-01-31 23:02:49,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 23:02:49,004 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2022-01-31 23:02:49,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:02:49,006 INFO L225 Difference]: With dead ends: 51 [2022-01-31 23:02:49,006 INFO L226 Difference]: Without dead ends: 40 [2022-01-31 23:02:49,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-31 23:02:49,008 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 37 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:02:49,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 39 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 23:02:49,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-31 23:02:49,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-01-31 23:02:49,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-01-31 23:02:49,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2022-01-31 23:02:49,017 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2022-01-31 23:02:49,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:02:49,018 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2022-01-31 23:02:49,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 23:02:49,018 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2022-01-31 23:02:49,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-31 23:02:49,019 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:02:49,019 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:02:49,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:02:49,019 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:02:49,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:02:49,020 INFO L85 PathProgramCache]: Analyzing trace with hash -2104341517, now seen corresponding path program 1 times [2022-01-31 23:02:49,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:02:49,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791336126] [2022-01-31 23:02:49,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:02:49,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:02:49,022 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:02:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:49,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:02:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:49,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:02:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:49,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:02:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:49,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 23:02:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:02:49,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:02:49,099 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:02:49,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791336126] [2022-01-31 23:02:49,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [791336126] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:02:49,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:02:49,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 23:02:49,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028939066] [2022-01-31 23:02:49,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:02:49,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 23:02:49,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:02:49,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 23:02:49,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 23:02:49,101 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 23:02:49,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:02:49,219 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2022-01-31 23:02:49,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 23:02:49,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2022-01-31 23:02:49,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:02:49,222 INFO L225 Difference]: With dead ends: 55 [2022-01-31 23:02:49,222 INFO L226 Difference]: Without dead ends: 44 [2022-01-31 23:02:49,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-31 23:02:49,228 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 37 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:02:49,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 39 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 23:02:49,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-01-31 23:02:49,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2022-01-31 23:02:49,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-01-31 23:02:49,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2022-01-31 23:02:49,247 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2022-01-31 23:02:49,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:02:49,247 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2022-01-31 23:02:49,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 23:02:49,249 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2022-01-31 23:02:49,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-31 23:02:49,250 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:02:49,250 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:02:49,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 23:02:49,251 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:02:49,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:02:49,251 INFO L85 PathProgramCache]: Analyzing trace with hash -596789708, now seen corresponding path program 1 times [2022-01-31 23:02:49,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:02:49,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774197359] [2022-01-31 23:02:49,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:02:49,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:02:49,256 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:02:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 23:02:49,288 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 23:02:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 23:02:49,311 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-01-31 23:02:49,311 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 23:02:49,313 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 23:02:49,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 23:02:49,317 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-01-31 23:02:49,319 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 23:02:49,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:02:49 BoogieIcfgContainer [2022-01-31 23:02:49,328 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 23:02:49,329 INFO L158 Benchmark]: Toolchain (without parser) took 1723.01ms. Allocated memory was 255.9MB in the beginning and 307.2MB in the end (delta: 51.4MB). Free memory was 207.7MB in the beginning and 246.8MB in the end (delta: -39.1MB). Peak memory consumption was 13.0MB. Max. memory is 8.0GB. [2022-01-31 23:02:49,329 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 255.9MB. Free memory is still 224.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:02:49,329 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.08ms. Allocated memory is still 255.9MB. Free memory was 207.5MB in the beginning and 230.1MB in the end (delta: -22.6MB). Peak memory consumption was 10.4MB. Max. memory is 8.0GB. [2022-01-31 23:02:49,329 INFO L158 Benchmark]: Boogie Preprocessor took 58.79ms. Allocated memory is still 255.9MB. Free memory was 230.1MB in the beginning and 228.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 23:02:49,330 INFO L158 Benchmark]: RCFGBuilder took 219.53ms. Allocated memory is still 255.9MB. Free memory was 228.6MB in the beginning and 216.5MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-31 23:02:49,330 INFO L158 Benchmark]: TraceAbstraction took 1225.84ms. Allocated memory was 255.9MB in the beginning and 307.2MB in the end (delta: 51.4MB). Free memory was 216.0MB in the beginning and 246.8MB in the end (delta: -30.8MB). Peak memory consumption was 21.5MB. Max. memory is 8.0GB. [2022-01-31 23:02:49,331 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 255.9MB. Free memory is still 224.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 212.08ms. Allocated memory is still 255.9MB. Free memory was 207.5MB in the beginning and 230.1MB in the end (delta: -22.6MB). Peak memory consumption was 10.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 58.79ms. Allocated memory is still 255.9MB. Free memory was 230.1MB in the beginning and 228.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 219.53ms. Allocated memory is still 255.9MB. Free memory was 228.6MB in the beginning and 216.5MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1225.84ms. Allocated memory was 255.9MB in the beginning and 307.2MB in the end (delta: 51.4MB). Free memory was 216.0MB in the beginning and 246.8MB in the end (delta: -30.8MB). Peak memory consumption was 21.5MB. 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: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 46, overapproximation of someBinaryArithmeticFLOAToperation at line 56. Possible FailurePath: [L56] float x = 0.0f / 0.0f; [L57] float y = 0.0f / 0.0f; [L58] CALL, EXPR fmin_float(x, y) [L37] CALL, EXPR __fpclassify_float(x) [L14] __uint32_t w; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (w) = gf_u.word [L22] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L24-L25] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L27-L28] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L30] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L33] return 0; [L37] RET, EXPR __fpclassify_float(x) [L37] COND TRUE __fpclassify_float(x) == 0 [L38] return y; [L58] RET, EXPR fmin_float(x, y) [L58] float res = fmin_float(x, y); [L60] CALL, EXPR isnan_float(res) [L46] return x != x; [L60] RET, EXPR isnan_float(res) [L60] COND TRUE !isnan_float(res) [L61] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 119 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 111 mSDsluCounter, 121 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 48 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 282 IncrementalHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 48 mSolverCounterUnsat, 111 mSDtfsCounter, 282 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 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 [2022-01-31 23:02:49,355 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...