/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-benchs/sqrt_poly.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.2-dev-d966a43
[2022-01-31 22:55:40,471 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-01-31 22:55:40,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-31 22:55:40,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-31 22:55:40,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-31 22:55:40,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-31 22:55:40,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-31 22:55:40,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-31 22:55:40,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-31 22:55:40,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-01-31 22:55:40,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-01-31 22:55:40,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-31 22:55:40,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-31 22:55:40,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-31 22:55:40,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-31 22:55:40,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-31 22:55:40,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-31 22:55:40,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-31 22:55:40,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-31 22:55:40,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-31 22:55:40,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-31 22:55:40,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-31 22:55:40,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-01-31 22:55:40,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-31 22:55:40,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-31 22:55:40,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-31 22:55:40,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-31 22:55:40,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-31 22:55:40,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-31 22:55:40,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-31 22:55:40,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-31 22:55:40,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-31 22:55:40,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-31 22:55:40,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-31 22:55:40,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-31 22:55:40,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-31 22:55:40,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2022-01-31 22:55:40,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-31 22:55:40,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-01-31 22:55:40,563 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 22:55:40,571 INFO L113 SettingsManager]: Loading preferences was successful
[2022-01-31 22:55:40,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-31 22:55:40,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-31 22:55:40,573 INFO L138 SettingsManager]: * sizeof long=4
[2022-01-31 22:55:40,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-01-31 22:55:40,573 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-01-31 22:55:40,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-01-31 22:55:40,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-01-31 22:55:40,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-31 22:55:40,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-01-31 22:55:40,573 INFO L138 SettingsManager]: * sizeof long double=12
[2022-01-31 22:55:40,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-01-31 22:55:40,574 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-01-31 22:55:40,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-01-31 22:55:40,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-31 22:55:40,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-01-31 22:55:40,574 INFO L138 SettingsManager]: * To the following directory=./dump/
[2022-01-31 22:55:40,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-01-31 22:55:40,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-31 22:55:40,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-31 22:55:40,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2022-01-31 22:55:40,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-31 22:55:40,575 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN
[2022-01-31 22:55:40,575 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-31 22:55:40,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-31 22:55:40,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-31 22:55:40,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-31 22:55:40,783 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-01-31 22:55:40,784 INFO L275 PluginConnector]: CDTParser initialized
[2022-01-31 22:55:40,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/sqrt_poly.c
[2022-01-31 22:55:40,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34cf2f779/f0272dc4f3014ac395773ca3ec0eaa20/FLAG66bb2a92e
[2022-01-31 22:55:41,154 INFO L306 CDTParser]: Found 1 translation units.
[2022-01-31 22:55:41,155 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/sqrt_poly.c
[2022-01-31 22:55:41,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34cf2f779/f0272dc4f3014ac395773ca3ec0eaa20/FLAG66bb2a92e
[2022-01-31 22:55:41,578 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34cf2f779/f0272dc4f3014ac395773ca3ec0eaa20
[2022-01-31 22:55:41,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-31 22:55:41,583 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2022-01-31 22:55:41,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-31 22:55:41,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-31 22:55:41,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-31 22:55:41,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:55:41" (1/1) ...
[2022-01-31 22:55:41,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e2ce457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:41, skipping insertion in model container
[2022-01-31 22:55:41,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:55:41" (1/1) ...
[2022-01-31 22:55:41,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-01-31 22:55:41,605 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-01-31 22:55:41,717 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-benchs/sqrt_poly.c[671,684]
[2022-01-31 22:55:41,726 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-01-31 22:55:41,747 INFO L203 MainTranslator]: Completed pre-run
[2022-01-31 22:55:41,756 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-benchs/sqrt_poly.c[671,684]
[2022-01-31 22:55:41,759 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-01-31 22:55:41,767 INFO L208 MainTranslator]: Completed translation
[2022-01-31 22:55:41,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:41 WrapperNode
[2022-01-31 22:55:41,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-31 22:55:41,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-31 22:55:41,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-31 22:55:41,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-01-31 22:55:41,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:41" (1/1) ...
[2022-01-31 22:55:41,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:41" (1/1) ...
[2022-01-31 22:55:41,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:41" (1/1) ...
[2022-01-31 22:55:41,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:41" (1/1) ...
[2022-01-31 22:55:41,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:41" (1/1) ...
[2022-01-31 22:55:41,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:41" (1/1) ...
[2022-01-31 22:55:41,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:41" (1/1) ...
[2022-01-31 22:55:41,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-31 22:55:41,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-31 22:55:41,796 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-01-31 22:55:41,796 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-01-31 22:55:41,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:41" (1/1) ...
[2022-01-31 22:55:41,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-31 22:55:41,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-31 22:55:41,824 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 22:55:41,825 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 22:55:41,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-01-31 22:55:41,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-31 22:55:41,853 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2022-01-31 22:55:41,853 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2022-01-31 22:55:41,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-01-31 22:55:41,854 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2022-01-31 22:55:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2022-01-31 22:55:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-01-31 22:55:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2022-01-31 22:55:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-31 22:55:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double
[2022-01-31 22:55:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2022-01-31 22:55:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-01-31 22:55:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2022-01-31 22:55:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-01-31 22:55:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-01-31 22:55:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-31 22:55:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-01-31 22:55:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-01-31 22:55:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-01-31 22:55:41,905 INFO L234 CfgBuilder]: Building ICFG
[2022-01-31 22:55:41,906 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-31 22:55:42,003 INFO L275 CfgBuilder]: Performing block encoding
[2022-01-31 22:55:42,007 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-31 22:55:42,008 INFO L299 CfgBuilder]: Removed 0 assume(true) statements.
[2022-01-31 22:55:42,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:55:42 BoogieIcfgContainer
[2022-01-31 22:55:42,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-31 22:55:42,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-31 22:55:42,012 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-01-31 22:55:42,014 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-01-31 22:55:42,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:55:41" (1/3) ...
[2022-01-31 22:55:42,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7100565d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:55:42, skipping insertion in model container
[2022-01-31 22:55:42,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:55:41" (2/3) ...
[2022-01-31 22:55:42,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7100565d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:55:42, skipping insertion in model container
[2022-01-31 22:55:42,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:55:42" (3/3) ...
[2022-01-31 22:55:42,016 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_poly.c
[2022-01-31 22:55:42,020 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2022-01-31 22:55:42,020 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-31 22:55:42,063 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-31 22:55:42,070 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 22:55:42,070 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-31 22:55:42,081 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-01-31 22:55:42,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2022-01-31 22:55:42,089 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 22:55:42,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 22:55:42,090 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 22:55:42,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 22:55:42,100 INFO L85 PathProgramCache]: Analyzing trace with hash 315240928, now seen corresponding path program 1 times
[2022-01-31 22:55:42,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 22:55:42,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539728769]
[2022-01-31 22:55:42,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 22:55:42,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 22:55:42,162 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 22:55:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 22:55:42,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 22:55:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 22:55:42,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2022-01-31 22:55:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 22:55:42,263 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 22:55:42,264 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 22:55:42,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539728769]
[2022-01-31 22:55:42,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1539728769] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 22:55:42,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 22:55:42,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-31 22:55:42,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090805571]
[2022-01-31 22:55:42,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 22:55:42,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-31 22:55:42,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 22:55:42,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-31 22:55:42,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-31 22:55:42,298 INFO L87 Difference]: Start difference. First operand has 24 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2022-01-31 22:55:42,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 22:55:42,335 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions.
[2022-01-31 22:55:42,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-01-31 22:55:42,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16
[2022-01-31 22:55:42,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 22:55:42,342 INFO L225 Difference]: With dead ends: 39
[2022-01-31 22:55:42,343 INFO L226 Difference]: Without dead ends: 17
[2022-01-31 22:55:42,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-31 22:55:42,349 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 13 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 22:55:42,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 25 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 22:55:42,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2022-01-31 22:55:42,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17.
[2022-01-31 22:55:42,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 22:55:42,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions.
[2022-01-31 22:55:42,380 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 16
[2022-01-31 22:55:42,380 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 22:55:42,381 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions.
[2022-01-31 22:55:42,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2022-01-31 22:55:42,381 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions.
[2022-01-31 22:55:42,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2022-01-31 22:55:42,382 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 22:55:42,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 22:55:42,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-31 22:55:42,383 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 22:55:42,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 22:55:42,383 INFO L85 PathProgramCache]: Analyzing trace with hash -494105698, now seen corresponding path program 1 times
[2022-01-31 22:55:42,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 22:55:42,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354126723]
[2022-01-31 22:55:42,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 22:55:42,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 22:55:42,387 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 22:55:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-01-31 22:55:42,406 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-01-31 22:55:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-01-31 22:55:42,435 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2022-01-31 22:55:42,435 INFO L628 BasicCegarLoop]: Counterexample is feasible
[2022-01-31 22:55:42,438 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2022-01-31 22:55:42,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-31 22:55:42,442 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1]
[2022-01-31 22:55:42,445 INFO L180 ceAbstractionStarter]: Computing trace abstraction results
[2022-01-31 22:55:42,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:55:42 BoogieIcfgContainer
[2022-01-31 22:55:42,454 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-01-31 22:55:42,454 INFO L158 Benchmark]: Toolchain (without parser) took 871.39ms. Allocated memory was 174.1MB in the beginning and 213.9MB in the end (delta: 39.8MB). Free memory was 126.0MB in the beginning and 153.6MB in the end (delta: -27.6MB). Peak memory consumption was 12.3MB. Max. memory is 8.0GB.
[2022-01-31 22:55:42,455 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 174.1MB. Free memory was 142.4MB in the beginning and 142.3MB in the end (delta: 89.7kB). There was no memory consumed. Max. memory is 8.0GB.
[2022-01-31 22:55:42,456 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.26ms. Allocated memory was 174.1MB in the beginning and 213.9MB in the end (delta: 39.8MB). Free memory was 125.7MB in the beginning and 191.9MB in the end (delta: -66.2MB). Peak memory consumption was 12.4MB. Max. memory is 8.0GB.
[2022-01-31 22:55:42,456 INFO L158 Benchmark]: Boogie Preprocessor took 26.21ms. Allocated memory is still 213.9MB. Free memory was 191.9MB in the beginning and 190.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-01-31 22:55:42,457 INFO L158 Benchmark]: RCFGBuilder took 213.49ms. Allocated memory is still 213.9MB. Free memory was 190.3MB in the beginning and 180.9MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB.
[2022-01-31 22:55:42,457 INFO L158 Benchmark]: TraceAbstraction took 442.24ms. Allocated memory is still 213.9MB. Free memory was 180.4MB in the beginning and 153.6MB in the end (delta: 26.7MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB.
[2022-01-31 22:55:42,464 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.11ms. Allocated memory is still 174.1MB. Free memory was 142.4MB in the beginning and 142.3MB in the end (delta: 89.7kB). There was no memory consumed. Max. memory is 8.0GB.
* CACSL2BoogieTranslator took 184.26ms. Allocated memory was 174.1MB in the beginning and 213.9MB in the end (delta: 39.8MB). Free memory was 125.7MB in the beginning and 191.9MB in the end (delta: -66.2MB). Peak memory consumption was 12.4MB. Max. memory is 8.0GB.
* Boogie Preprocessor took 26.21ms. Allocated memory is still 213.9MB. Free memory was 191.9MB in the beginning and 190.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
* RCFGBuilder took 213.49ms. Allocated memory is still 213.9MB. Free memory was 190.3MB in the beginning and 180.9MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB.
* TraceAbstraction took 442.24ms. Allocated memory is still 213.9MB. Free memory was 180.4MB in the beginning and 153.6MB in the end (delta: 26.7MB). Peak memory consumption was 27.3MB. 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: 16]: 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 30, overapproximation of someBinaryArithmeticDOUBLEoperation at line 28.
Possible FailurePath:
[L18] double sqrt2 = 1.414213538169860839843750;
[L22] double S, I;
[L24] I = __VERIFIER_nondet_double()
[L25] CALL assume_abort_if_not(I >= 1. && I <= 3.)
[L14] COND FALSE !(!cond)
[L25] RET assume_abort_if_not(I >= 1. && I <= 3.)
[L27] COND FALSE !(I >= 2.)
[L28] S = 1.+(I-1.) * (.5+(I-1.) * (-.125+(I-1.)*.0625))
[L30] CALL __VERIFIER_assert(S >= 1. && S <= 2.)
[L16] COND TRUE !(cond)
[L16] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 22 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
[2022-01-31 22:55:42,505 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...