/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1210.c
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This is Ultimate 0.1.25-d623d84
[2020-07-20 16:27:47,998 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-07-20 16:27:48,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-20 16:27:48,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-20 16:27:48,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-20 16:27:48,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-20 16:27:48,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-20 16:27:48,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-20 16:27:48,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-20 16:27:48,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-20 16:27:48,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-07-20 16:27:48,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-20 16:27:48,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-20 16:27:48,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-20 16:27:48,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-20 16:27:48,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-20 16:27:48,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-20 16:27:48,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-20 16:27:48,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-20 16:27:48,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-20 16:27:48,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-20 16:27:48,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-20 16:27:48,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-07-20 16:27:48,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-20 16:27:48,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-20 16:27:48,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-20 16:27:48,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-20 16:27:48,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-20 16:27:48,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-20 16:27:48,042 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-20 16:27:48,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-20 16:27:48,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-20 16:27:48,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-20 16:27:48,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-20 16:27:48,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-20 16:27:48,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-20 16:27:48,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-20 16:27:48,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-20 16:27:48,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-20 16:27:48,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-20 16:27:48,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-07-20 16:27:48,049 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-07-20 16:27:48,065 INFO L113 SettingsManager]: Loading preferences was successful
[2020-07-20 16:27:48,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-20 16:27:48,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-20 16:27:48,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-07-20 16:27:48,067 INFO L138 SettingsManager]: * Use SBE=true
[2020-07-20 16:27:48,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-20 16:27:48,067 INFO L138 SettingsManager]: * sizeof long=4
[2020-07-20 16:27:48,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-07-20 16:27:48,067 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-07-20 16:27:48,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-07-20 16:27:48,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-07-20 16:27:48,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-20 16:27:48,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-07-20 16:27:48,068 INFO L138 SettingsManager]: * sizeof long double=12
[2020-07-20 16:27:48,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-07-20 16:27:48,069 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-07-20 16:27:48,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-07-20 16:27:48,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-20 16:27:48,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-07-20 16:27:48,069 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-07-20 16:27:48,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-07-20 16:27:48,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-20 16:27:48,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-20 16:27:48,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-07-20 16:27:48,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-20 16:27:48,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-07-20 16:27:48,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 16:27:48,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-20 16:27:48,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-07-20 16:27:48,071 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4
[2020-07-20 16:27:48,358 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-20 16:27:48,373 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-20 16:27:48,380 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-20 16:27:48,382 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-07-20 16:27:48,384 INFO L275 PluginConnector]: CDTParser initialized
[2020-07-20 16:27:48,385 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1210.c
[2020-07-20 16:27:48,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/491a50425/e1fe8cbaacef4c16a6a9c568efa62cf2/FLAG635f337fc
[2020-07-20 16:27:48,910 INFO L306 CDTParser]: Found 1 translation units.
[2020-07-20 16:27:48,911 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1210.c
[2020-07-20 16:27:48,918 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/491a50425/e1fe8cbaacef4c16a6a9c568efa62cf2/FLAG635f337fc
[2020-07-20 16:27:49,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/491a50425/e1fe8cbaacef4c16a6a9c568efa62cf2
[2020-07-20 16:27:49,291 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-20 16:27:49,295 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-20 16:27:49,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-20 16:27:49,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-20 16:27:49,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-20 16:27:49,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:27:49" (1/1) ...
[2020-07-20 16:27:49,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532e9d8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:49, skipping insertion in model container
[2020-07-20 16:27:49,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:27:49" (1/1) ...
[2020-07-20 16:27:49,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-07-20 16:27:49,332 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-07-20 16:27:49,562 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 16:27:49,571 INFO L203 MainTranslator]: Completed pre-run
[2020-07-20 16:27:49,598 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 16:27:49,627 INFO L208 MainTranslator]: Completed translation
[2020-07-20 16:27:49,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:49 WrapperNode
[2020-07-20 16:27:49,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-20 16:27:49,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-20 16:27:49,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-20 16:27:49,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-07-20 16:27:49,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:49" (1/1) ...
[2020-07-20 16:27:49,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:49" (1/1) ...
[2020-07-20 16:27:49,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:49" (1/1) ...
[2020-07-20 16:27:49,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:49" (1/1) ...
[2020-07-20 16:27:49,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:49" (1/1) ...
[2020-07-20 16:27:49,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:49" (1/1) ...
[2020-07-20 16:27:49,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:49" (1/1) ...
[2020-07-20 16:27:49,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-20 16:27:49,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-20 16:27:49,777 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-07-20 16:27:49,777 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-07-20 16:27:49,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:49" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-20 16:27:49,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-20 16:27:49,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-20 16:27:49,837 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_float
[2020-07-20 16:27:49,837 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float
[2020-07-20 16:27:49,837 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-07-20 16:27:49,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-20 16:27:49,839 INFO L130 BoogieDeclarations]: Found specification of procedure modf_float
[2020-07-20 16:27:49,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-07-20 16:27:49,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2020-07-20 16:27:49,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-07-20 16:27:49,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-07-20 16:27:49,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-07-20 16:27:49,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2020-07-20 16:27:49,841 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float
[2020-07-20 16:27:49,842 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-07-20 16:27:49,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-20 16:27:49,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-20 16:27:50,293 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-20 16:27:50,293 INFO L295 CfgBuilder]: Removed 14 assume(true) statements.
[2020-07-20 16:27:50,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:27:50 BoogieIcfgContainer
[2020-07-20 16:27:50,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-20 16:27:50,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-20 16:27:50,299 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-07-20 16:27:50,302 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-07-20 16:27:50,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:27:49" (1/3) ...
[2020-07-20 16:27:50,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@367a0358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:27:50, skipping insertion in model container
[2020-07-20 16:27:50,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:49" (2/3) ...
[2020-07-20 16:27:50,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@367a0358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:27:50, skipping insertion in model container
[2020-07-20 16:27:50,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:27:50" (3/3) ...
[2020-07-20 16:27:50,306 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c
[2020-07-20 16:27:50,316 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-20 16:27:50,322 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-20 16:27:50,335 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-20 16:27:50,356 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-07-20 16:27:50,356 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-07-20 16:27:50,356 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-20 16:27:50,356 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-20 16:27:50,356 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-20 16:27:50,356 INFO L380 AbstractCegarLoop]: Difference is false
[2020-07-20 16:27:50,356 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-20 16:27:50,356 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-20 16:27:50,374 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states.
[2020-07-20 16:27:50,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-07-20 16:27:50,381 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 16:27:50,382 INFO L422 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]
[2020-07-20 16:27:50,382 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 16:27:50,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 16:27:50,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1399428577, now seen corresponding path program 1 times
[2020-07-20 16:27:50,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 16:27:50,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084571456]
[2020-07-20 16:27:50,396 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 16:27:50,506 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 16:27:50,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 16:27:50,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 1 conjunts are in the unsatisfiable core
[2020-07-20 16:27:50,516 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 16:27:50,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 16:27:50,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 16:27:50,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084571456]
[2020-07-20 16:27:50,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 16:27:50,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-07-20 16:27:50,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124629240]
[2020-07-20 16:27:50,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-07-20 16:27:50,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 16:27:50,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-07-20 16:27:50,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-20 16:27:50,566 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 2 states.
[2020-07-20 16:27:50,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 16:27:50,595 INFO L93 Difference]: Finished difference Result 88 states and 126 transitions.
[2020-07-20 16:27:50,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2020-07-20 16:27:50,597 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25
[2020-07-20 16:27:50,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 16:27:50,609 INFO L225 Difference]: With dead ends: 88
[2020-07-20 16:27:50,610 INFO L226 Difference]: Without dead ends: 44
[2020-07-20 16:27:50,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-20 16:27:50,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2020-07-20 16:27:50,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44.
[2020-07-20 16:27:50,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states.
[2020-07-20 16:27:50,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions.
[2020-07-20 16:27:50,663 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 25
[2020-07-20 16:27:50,663 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 16:27:50,664 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions.
[2020-07-20 16:27:50,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-07-20 16:27:50,664 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions.
[2020-07-20 16:27:50,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-07-20 16:27:50,667 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 16:27:50,667 INFO L422 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]
[2020-07-20 16:27:50,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 16:27:50,881 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 16:27:50,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 16:27:50,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1932138526, now seen corresponding path program 1 times
[2020-07-20 16:27:50,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 16:27:50,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091121317]
[2020-07-20 16:27:50,884 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 16:27:50,969 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-20 16:27:50,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 16:27:50,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjunts are in the unsatisfiable core
[2020-07-20 16:27:50,972 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 16:27:50,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 16:27:50,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 16:27:51,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091121317]
[2020-07-20 16:27:51,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 16:27:51,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-20 16:27:51,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307763306]
[2020-07-20 16:27:51,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-20 16:27:51,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 16:27:51,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-20 16:27:51,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-20 16:27:51,006 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 3 states.
[2020-07-20 16:27:51,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 16:27:51,038 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions.
[2020-07-20 16:27:51,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-07-20 16:27:51,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27
[2020-07-20 16:27:51,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 16:27:51,043 INFO L225 Difference]: With dead ends: 47
[2020-07-20 16:27:51,043 INFO L226 Difference]: Without dead ends: 44
[2020-07-20 16:27:51,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-20 16:27:51,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2020-07-20 16:27:51,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44.
[2020-07-20 16:27:51,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states.
[2020-07-20 16:27:51,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions.
[2020-07-20 16:27:51,061 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 27
[2020-07-20 16:27:51,064 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 16:27:51,064 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions.
[2020-07-20 16:27:51,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-20 16:27:51,065 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions.
[2020-07-20 16:27:51,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2020-07-20 16:27:51,068 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 16:27:51,071 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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]
[2020-07-20 16:27:51,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 16:27:51,287 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 16:27:51,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 16:27:51,288 INFO L82 PathProgramCache]: Analyzing trace with hash -425385736, now seen corresponding path program 1 times
[2020-07-20 16:27:51,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 16:27:51,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841498424]
[2020-07-20 16:27:51,290 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 16:27:51,388 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-20 16:27:51,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat
[2020-07-20 16:27:51,388 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-20 16:27:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-20 16:27:51,415 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-20 16:27:51,467 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-07-20 16:27:51,468 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-07-20 16:27:51,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 16:27:51,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 04:27:51 BoogieIcfgContainer
[2020-07-20 16:27:51,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-20 16:27:51,735 INFO L168 Benchmark]: Toolchain (without parser) took 2441.13 ms. Allocated memory was 144.7 MB in the beginning and 233.8 MB in the end (delta: 89.1 MB). Free memory was 102.1 MB in the beginning and 204.8 MB in the end (delta: -102.7 MB). Peak memory consumption was 79.4 MB. Max. memory is 7.1 GB.
[2020-07-20 16:27:51,736 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 144.7 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-07-20 16:27:51,737 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.87 ms. Allocated memory is still 144.7 MB. Free memory was 101.7 MB in the beginning and 90.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB.
[2020-07-20 16:27:51,738 INFO L168 Benchmark]: Boogie Preprocessor took 148.17 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 90.3 MB in the beginning and 179.2 MB in the end (delta: -88.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB.
[2020-07-20 16:27:51,739 INFO L168 Benchmark]: RCFGBuilder took 521.27 ms. Allocated memory is still 202.4 MB. Free memory was 178.5 MB in the beginning and 154.3 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB.
[2020-07-20 16:27:51,740 INFO L168 Benchmark]: TraceAbstraction took 1433.28 ms. Allocated memory was 202.4 MB in the beginning and 233.8 MB in the end (delta: 31.5 MB). Free memory was 153.6 MB in the beginning and 204.8 MB in the end (delta: -51.2 MB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB.
[2020-07-20 16:27:51,744 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.23 ms. Allocated memory is still 144.7 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 331.87 ms. Allocated memory is still 144.7 MB. Free memory was 101.7 MB in the beginning and 90.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 148.17 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 90.3 MB in the beginning and 179.2 MB in the end (delta: -88.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 521.27 ms. Allocated memory is still 202.4 MB. Free memory was 178.5 MB in the beginning and 154.3 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1433.28 ms. Allocated memory was 202.4 MB in the beginning and 233.8 MB in the end (delta: 31.5 MB). Free memory was 153.6 MB in the beginning and 204.8 MB in the end (delta: -51.2 MB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 86]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of someBinaryFLOATComparisonOperation at line 73, overapproximation of someBinaryArithmeticFLOAToperation at line 80, overapproximation of bitwiseAnd at line 26.
Possible FailurePath:
[L11] static const float one_modf = 1.0;
VAL [\old(one_modf)=0, one_modf=1]
[L80] float x = 0.0f / 0.0f;
[L81] float iptr;
VAL [iptr={4:0}, one_modf=1]
[L82] CALL, EXPR modf_float(x, &iptr)
VAL [\old(x)=2, iptr={4:0}, one_modf=1]
[L14] __int32_t i0, j0;
[L15] __uint32_t i;
VAL [\old(x)=2, iptr={4:0}, iptr={4:0}, one_modf=1, x=2]
[L17] ieee_float_shape_type gf_u;
[L18] gf_u.value = (x)
[L19] EXPR gf_u.word
[L19] (i0) = gf_u.word
[L21] j0 = ((i0 >> 23) & 0xff) - 0x7f
VAL [\old(x)=2, i0=0, iptr={4:0}, iptr={4:0}, one_modf=1, x=2]
[L22] COND TRUE j0 < 23
VAL [\old(x)=2, i0=0, iptr={4:0}, iptr={4:0}, j0=-1, one_modf=1, x=2]
[L23] COND TRUE j0 < 0
VAL [\old(x)=2, i0=0, iptr={4:0}, iptr={4:0}, j0=-1, one_modf=1, x=2]
[L25] ieee_float_shape_type sf_u;
[L26] sf_u.word = (i0 & 0x80000000)
[L27] EXPR sf_u.value
[L27] (*iptr) = sf_u.value
[L29] return x;
VAL [\old(x)=2, \result=2, i0=0, iptr={4:0}, iptr={4:0}, j0=-1, one_modf=1, x=2]
[L82] RET, EXPR modf_float(x, &iptr)
VAL [iptr={4:0}, modf_float(x, &iptr)=2, one_modf=1, x=2]
[L82] float res = modf_float(x, &iptr);
[L85] EXPR \read(iptr)
VAL [\read(iptr)=4, iptr={4:0}, one_modf=1, res=2, x=2]
[L85] CALL, EXPR isnan_float(iptr)
VAL [\old(x)=4, one_modf=1]
[L73] return x != x;
VAL [\old(x)=4, \result=1, one_modf=1, x=4]
[L85] RET, EXPR isnan_float(iptr)
VAL [\read(iptr)=4, iptr={4:0}, isnan_float(iptr)=1, one_modf=1, res=2, x=2]
[L85] isnan_float(iptr) && !isnan_float(res)
VAL [\read(iptr)=4, iptr={4:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, one_modf=1, res=2, x=2]
[L85] CALL, EXPR isnan_float(res)
VAL [\old(x)=2, one_modf=1]
[L73] return x != x;
VAL [\old(x)=2, \result=0, one_modf=1, x=2]
[L85] RET, EXPR isnan_float(res)
VAL [\read(iptr)=4, iptr={4:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1, res=2, x=2]
[L85] isnan_float(iptr) && !isnan_float(res)
VAL [\read(iptr)=4, iptr={4:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1, res=2, x=2]
[L85] COND TRUE isnan_float(iptr) && !isnan_float(res)
[L86] __VERIFIER_error()
VAL [iptr={4:0}, one_modf=1, res=2, x=2]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 0 SDslu, 43 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 84 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 1278 SizeOfPredicates, 0 NumberOfNonLiveVariables, 208 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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
Received shutdown request...