/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/double_req_bl_1251b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 23:00:34,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:00:34,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:00:34,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 23:00:34,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 23:00:34,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 23:00:34,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 23:00:34,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 23:00:34,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 23:00:34,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 23:00:34,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 23:00:34,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 23:00:34,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 23:00:34,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 23:00:34,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 23:00:34,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 23:00:34,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 23:00:34,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:00:34,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:00:34,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:00:34,834 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 23:00:34,844 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:00:34,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:00:34,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:00:34,846 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 23:00:34,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:00:34,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 23:00:34,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:00:34,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:00:34,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:00:34,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:00:34,847 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 23:00:34,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:00:34,847 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:00:34,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:00:34,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:00:34,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:00:34,848 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:00:34,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:00:34,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:00:34,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:00:34,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:00:34,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:00:34,848 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 23:00:34,849 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:00:35,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:00:35,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:00:35,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:00:35,018 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:00:35,018 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:00:35,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2022-01-31 23:00:35,057 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/534caaf8d/caba2ba053e9406194139d918870c8fe/FLAGf1b735c07 [2022-01-31 23:00:35,358 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:00:35,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2022-01-31 23:00:35,363 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/534caaf8d/caba2ba053e9406194139d918870c8fe/FLAGf1b735c07 [2022-01-31 23:00:35,790 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/534caaf8d/caba2ba053e9406194139d918870c8fe [2022-01-31 23:00:35,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:00:35,792 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:00:35,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:00:35,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:00:35,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:00:35,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:00:35" (1/1) ... [2022-01-31 23:00:35,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bd0d4a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:35, skipping insertion in model container [2022-01-31 23:00:35,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:00:35" (1/1) ... [2022-01-31 23:00:35,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:00:35,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:00:35,936 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_1251b.c[2080,2093] [2022-01-31 23:00:35,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:00:35,942 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:00:35,966 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_1251b.c[2080,2093] [2022-01-31 23:00:35,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:00:35,975 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:00:35,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:35 WrapperNode [2022-01-31 23:00:35,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:00:35,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:00:35,976 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:00:35,976 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:00:35,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:35" (1/1) ... [2022-01-31 23:00:35,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:35" (1/1) ... [2022-01-31 23:00:35,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:35" (1/1) ... [2022-01-31 23:00:35,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:35" (1/1) ... [2022-01-31 23:00:35,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:35" (1/1) ... [2022-01-31 23:00:36,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:35" (1/1) ... [2022-01-31 23:00:36,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:35" (1/1) ... [2022-01-31 23:00:36,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:00:36,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:00:36,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:00:36,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:00:36,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:35" (1/1) ... [2022-01-31 23:00:36,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:00:36,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:00:36,031 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 23:00:36,042 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 23:00:36,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:00:36,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:00:36,064 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:00:36,064 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2022-01-31 23:00:36,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2022-01-31 23:00:36,065 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2022-01-31 23:00:36,065 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:00:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:00:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:00:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:00:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:00:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-01-31 23:00:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2022-01-31 23:00:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2022-01-31 23:00:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 23:00:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-01-31 23:00:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:00:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:00:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2022-01-31 23:00:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:00:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:00:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:00:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:00:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:00:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-01-31 23:00:36,112 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:00:36,113 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:00:36,227 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:00:36,232 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:00:36,232 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-31 23:00:36,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:00:36 BoogieIcfgContainer [2022-01-31 23:00:36,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:00:36,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:00:36,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:00:36,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:00:36,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:00:35" (1/3) ... [2022-01-31 23:00:36,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f02a7a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:00:36, skipping insertion in model container [2022-01-31 23:00:36,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:00:35" (2/3) ... [2022-01-31 23:00:36,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f02a7a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:00:36, skipping insertion in model container [2022-01-31 23:00:36,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:00:36" (3/3) ... [2022-01-31 23:00:36,246 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c [2022-01-31 23:00:36,249 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:00:36,249 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 23:00:36,300 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:00:36,304 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 23:00:36,305 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 23:00:36,329 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 30 states have internal predecessors, (41), 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 23:00:36,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-31 23:00:36,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:36,335 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 23:00:36,336 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:36,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:36,346 INFO L85 PathProgramCache]: Analyzing trace with hash -99370395, now seen corresponding path program 1 times [2022-01-31 23:00:36,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:36,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917793475] [2022-01-31 23:00:36,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:36,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:36,412 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:00:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:36,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:00:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:36,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:00:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:36,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:00:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:36,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:00:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:36,648 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 23:00:36,649 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:00:36,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917793475] [2022-01-31 23:00:36,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1917793475] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:00:36,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:00:36,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 23:00:36,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159344960] [2022-01-31 23:00:36,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:00:36,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 23:00:36,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:00:36,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 23:00:36,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 23:00:36,684 INFO L87 Difference]: Start difference. First operand has 42 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 30 states have internal predecessors, (41), 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 4.5) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-31 23:00:36,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:00:36,852 INFO L93 Difference]: Finished difference Result 72 states and 94 transitions. [2022-01-31 23:00:36,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 23:00:36,854 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), 1 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 27 [2022-01-31 23:00:36,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:00:36,858 INFO L225 Difference]: With dead ends: 72 [2022-01-31 23:00:36,859 INFO L226 Difference]: Without dead ends: 37 [2022-01-31 23:00:36,861 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 23:00:36,863 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 47 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:00:36,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 46 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 23:00:36,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-31 23:00:36,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-01-31 23:00:36,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 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 23:00:36,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2022-01-31 23:00:36,913 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 27 [2022-01-31 23:00:36,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:00:36,913 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2022-01-31 23:00:36,913 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), 1 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-31 23:00:36,913 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2022-01-31 23:00:36,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-31 23:00:36,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:36,915 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] [2022-01-31 23:00:36,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:00:36,915 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:36,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:36,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1474758777, now seen corresponding path program 1 times [2022-01-31 23:00:36,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:36,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649062356] [2022-01-31 23:00:36,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:36,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:36,918 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:00:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:36,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:00:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:36,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:00:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:36,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:00:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:37,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:00:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:37,057 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 23:00:37,058 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:00:37,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649062356] [2022-01-31 23:00:37,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [649062356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:00:37,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:00:37,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 23:00:37,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431542662] [2022-01-31 23:00:37,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:00:37,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 23:00:37,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:00:37,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 23:00:37,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 23:00:37,060 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-31 23:00:37,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:00:37,177 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2022-01-31 23:00:37,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 23:00:37,178 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2022-01-31 23:00:37,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:00:37,180 INFO L225 Difference]: With dead ends: 47 [2022-01-31 23:00:37,180 INFO L226 Difference]: Without dead ends: 41 [2022-01-31 23:00:37,180 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 23:00:37,181 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 40 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:00:37,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 40 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 23:00:37,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-31 23:00:37,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-01-31 23:00:37,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 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 23:00:37,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2022-01-31 23:00:37,190 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2022-01-31 23:00:37,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:00:37,190 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2022-01-31 23:00:37,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-31 23:00:37,191 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2022-01-31 23:00:37,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-31 23:00:37,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:37,191 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, 1] [2022-01-31 23:00:37,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:00:37,192 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:37,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:37,192 INFO L85 PathProgramCache]: Analyzing trace with hash -165002274, now seen corresponding path program 1 times [2022-01-31 23:00:37,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:37,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127823968] [2022-01-31 23:00:37,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:37,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:37,197 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:00:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:37,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:00:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:37,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:00:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:37,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:00:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:37,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:00:37,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:00:37,304 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 23:00:37,305 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:00:37,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127823968] [2022-01-31 23:00:37,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2127823968] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:00:37,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:00:37,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 23:00:37,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32084840] [2022-01-31 23:00:37,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:00:37,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 23:00:37,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:00:37,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 23:00:37,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 23:00:37,308 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-31 23:00:37,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:00:37,426 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2022-01-31 23:00:37,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 23:00:37,427 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31 [2022-01-31 23:00:37,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:00:37,428 INFO L225 Difference]: With dead ends: 51 [2022-01-31 23:00:37,428 INFO L226 Difference]: Without dead ends: 45 [2022-01-31 23:00:37,428 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 23:00:37,429 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 40 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:00:37,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 40 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 23:00:37,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-01-31 23:00:37,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2022-01-31 23:00:37,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 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 23:00:37,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2022-01-31 23:00:37,436 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 31 [2022-01-31 23:00:37,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:00:37,436 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2022-01-31 23:00:37,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-31 23:00:37,436 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2022-01-31 23:00:37,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-31 23:00:37,437 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:00:37,437 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, 1] [2022-01-31 23:00:37,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 23:00:37,437 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:00:37,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:00:37,437 INFO L85 PathProgramCache]: Analyzing trace with hash -361515779, now seen corresponding path program 1 times [2022-01-31 23:00:37,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:00:37,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462513004] [2022-01-31 23:00:37,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:00:37,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:00:37,440 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:00:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 23:00:37,456 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 23:00:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 23:00:37,480 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-01-31 23:00:37,480 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 23:00:37,482 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 23:00:37,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 23:00:37,485 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-01-31 23:00:37,487 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 23:00:37,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:00:37 BoogieIcfgContainer [2022-01-31 23:00:37,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 23:00:37,497 INFO L158 Benchmark]: Toolchain (without parser) took 1704.57ms. Allocated memory was 168.8MB in the beginning and 203.4MB in the end (delta: 34.6MB). Free memory was 116.4MB in the beginning and 132.6MB in the end (delta: -16.2MB). Peak memory consumption was 19.4MB. Max. memory is 8.0GB. [2022-01-31 23:00:37,497 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 168.8MB. Free memory is still 132.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:00:37,498 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.26ms. Allocated memory is still 168.8MB. Free memory was 116.2MB in the beginning and 140.1MB in the end (delta: -23.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-31 23:00:37,498 INFO L158 Benchmark]: Boogie Preprocessor took 26.04ms. Allocated memory is still 168.8MB. Free memory was 139.8MB in the beginning and 138.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 23:00:37,498 INFO L158 Benchmark]: RCFGBuilder took 230.41ms. Allocated memory is still 168.8MB. Free memory was 138.2MB in the beginning and 125.9MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-31 23:00:37,499 INFO L158 Benchmark]: TraceAbstraction took 1262.40ms. Allocated memory was 168.8MB in the beginning and 203.4MB in the end (delta: 34.6MB). Free memory was 125.6MB in the beginning and 132.6MB in the end (delta: -7.0MB). Peak memory consumption was 29.0MB. Max. memory is 8.0GB. [2022-01-31 23:00:37,500 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 168.8MB. Free memory is still 132.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 182.26ms. Allocated memory is still 168.8MB. Free memory was 116.2MB in the beginning and 140.1MB in the end (delta: -23.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.04ms. Allocated memory is still 168.8MB. Free memory was 139.8MB in the beginning and 138.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 230.41ms. Allocated memory is still 168.8MB. Free memory was 138.2MB in the beginning and 125.9MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1262.40ms. Allocated memory was 168.8MB in the beginning and 203.4MB in the end (delta: 34.6MB). Free memory was 125.6MB in the beginning and 132.6MB in the end (delta: -7.0MB). Peak memory consumption was 29.0MB. 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: 80]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someBinaryArithmeticDOUBLEoperation at line 67. Possible FailurePath: [L66] double x = __VERIFIER_nondet_double(); [L67] double y = 0.0 / 0.0; [L74] CALL, EXPR isnan_double(x) [L18] return x != x; [L74] RET, EXPR isnan_double(x) [L74] COND TRUE !isnan_double(x) [L76] CALL, EXPR fmax_double(x, y) [L57] CALL, EXPR __fpclassify_double(x) [L29] __uint32_t msw, lsw; [L32] ieee_double_shape_type ew_u; [L33] ew_u.value = (x) [L34] EXPR ew_u.parts.msw [L34] (msw) = ew_u.parts.msw [L35] EXPR ew_u.parts.lsw [L35] (lsw) = ew_u.parts.lsw [L38-L39] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L41-L42] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L44-L45] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L48-L49] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L52] return 0; [L57] RET, EXPR __fpclassify_double(x) [L57] COND TRUE __fpclassify_double(x) == 0 [L58] return y; [L76] RET, EXPR fmax_double(x, y) [L76] double res = fmax_double(x, y); [L79] COND TRUE res != x [L80] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 45 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, 132 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 127 mSDsluCounter, 126 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 281 IncrementalHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 116 mSDtfsCounter, 281 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=42occurred 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: 0.0s 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 23:00:37,543 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...