/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 NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/floats-cbmc-regression/float-no-simp3.c
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This is Ultimate 0.1.25-d623d84
[2020-07-21 10:39:18,562 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-07-21 10:39:18,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-21 10:39:18,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-21 10:39:18,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-21 10:39:18,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-21 10:39:18,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-21 10:39:18,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-21 10:39:18,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-21 10:39:18,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-21 10:39:18,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-07-21 10:39:18,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-21 10:39:18,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-21 10:39:18,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-21 10:39:18,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-21 10:39:18,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-21 10:39:18,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-21 10:39:18,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-21 10:39:18,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-21 10:39:18,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-21 10:39:18,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-21 10:39:18,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-21 10:39:18,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-07-21 10:39:18,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-21 10:39:18,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-21 10:39:18,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-21 10:39:18,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-21 10:39:18,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-21 10:39:18,637 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-21 10:39:18,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-21 10:39:18,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-21 10:39:18,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-21 10:39:18,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-21 10:39:18,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-21 10:39:18,642 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-21 10:39:18,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-21 10:39:18,643 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-21 10:39:18,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-21 10:39:18,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2020-07-21 10:39:18,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-07-21 10:39:18,646 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
[2020-07-21 10:39:18,660 INFO L113 SettingsManager]: Loading preferences was successful
[2020-07-21 10:39:18,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-21 10:39:18,662 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-21 10:39:18,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-07-21 10:39:18,662 INFO L138 SettingsManager]: * Use SBE=true
[2020-07-21 10:39:18,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-21 10:39:18,663 INFO L138 SettingsManager]: * sizeof long=4
[2020-07-21 10:39:18,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-07-21 10:39:18,663 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-07-21 10:39:18,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-07-21 10:39:18,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-07-21 10:39:18,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-21 10:39:18,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-07-21 10:39:18,664 INFO L138 SettingsManager]: * sizeof long double=12
[2020-07-21 10:39:18,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-07-21 10:39:18,665 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-07-21 10:39:18,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-07-21 10:39:18,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-21 10:39:18,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-07-21 10:39:18,665 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-07-21 10:39:18,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-07-21 10:39:18,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-21 10:39:18,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-21 10:39:18,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-07-21 10:39:18,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-21 10:39:18,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-07-21 10:39:18,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:39:18,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-21 10:39:18,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-07-21 10:39:18,667 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 -> NOT_INCREMENTALLY
[2020-07-21 10:39:18,984 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-21 10:39:19,002 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-21 10:39:19,006 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-21 10:39:19,007 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-07-21 10:39:19,008 INFO L275 PluginConnector]: CDTParser initialized
[2020-07-21 10:39:19,009 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float-no-simp3.c
[2020-07-21 10:39:19,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff0d9ec5d/34f602a5175f425389ccd13b35a17215/FLAGb88d4641b
[2020-07-21 10:39:19,536 INFO L306 CDTParser]: Found 1 translation units.
[2020-07-21 10:39:19,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float-no-simp3.c
[2020-07-21 10:39:19,543 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff0d9ec5d/34f602a5175f425389ccd13b35a17215/FLAGb88d4641b
[2020-07-21 10:39:19,934 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff0d9ec5d/34f602a5175f425389ccd13b35a17215
[2020-07-21 10:39:19,947 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-21 10:39:19,950 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-21 10:39:19,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-21 10:39:19,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-21 10:39:19,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-21 10:39:19,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:39:19" (1/1) ...
[2020-07-21 10:39:19,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9d0d0ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:19, skipping insertion in model container
[2020-07-21 10:39:19,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:39:19" (1/1) ...
[2020-07-21 10:39:19,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-07-21 10:39:19,983 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-07-21 10:39:20,166 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-21 10:39:20,171 INFO L203 MainTranslator]: Completed pre-run
[2020-07-21 10:39:20,182 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-21 10:39:20,196 INFO L208 MainTranslator]: Completed translation
[2020-07-21 10:39:20,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:20 WrapperNode
[2020-07-21 10:39:20,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-21 10:39:20,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-21 10:39:20,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-21 10:39:20,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-07-21 10:39:20,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:20" (1/1) ...
[2020-07-21 10:39:20,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:20" (1/1) ...
[2020-07-21 10:39:20,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:20" (1/1) ...
[2020-07-21 10:39:20,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:20" (1/1) ...
[2020-07-21 10:39:20,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:20" (1/1) ...
[2020-07-21 10:39:20,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:20" (1/1) ...
[2020-07-21 10:39:20,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:20" (1/1) ...
[2020-07-21 10:39:20,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-21 10:39:20,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-21 10:39:20,311 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-07-21 10:39:20,311 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-07-21 10:39:20,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:20" (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
[2020-07-21 10:39:20,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-21 10:39:20,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-21 10:39:20,363 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-07-21 10:39:20,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-21 10:39:20,364 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-07-21 10:39:20,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-21 10:39:20,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-21 10:39:20,503 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-21 10:39:20,504 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-07-21 10:39:20,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:39:20 BoogieIcfgContainer
[2020-07-21 10:39:20,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-21 10:39:20,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-21 10:39:20,509 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-07-21 10:39:20,512 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-07-21 10:39:20,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:39:19" (1/3) ...
[2020-07-21 10:39:20,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a162d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:39:20, skipping insertion in model container
[2020-07-21 10:39:20,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:20" (2/3) ...
[2020-07-21 10:39:20,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a162d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:39:20, skipping insertion in model container
[2020-07-21 10:39:20,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:39:20" (3/3) ...
[2020-07-21 10:39:20,516 INFO L109 eAbstractionObserver]: Analyzing ICFG float-no-simp3.c
[2020-07-21 10:39:20,527 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-21 10:39:20,533 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-21 10:39:20,544 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-21 10:39:20,565 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-07-21 10:39:20,565 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-07-21 10:39:20,565 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-21 10:39:20,565 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-21 10:39:20,565 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-21 10:39:20,566 INFO L380 AbstractCegarLoop]: Difference is false
[2020-07-21 10:39:20,566 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-21 10:39:20,566 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-21 10:39:20,580 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states.
[2020-07-21 10:39:20,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2020-07-21 10:39:20,584 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-21 10:39:20,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2020-07-21 10:39:20,585 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 10:39:20,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 10:39:20,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1297293521, now seen corresponding path program 1 times
[2020-07-21 10:39:20,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 10:39:20,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642833227]
[2020-07-21 10:39:20,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
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
[2020-07-21 10:39:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-21 10:39:20,640 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-21 10:39:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-21 10:39:20,645 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-21 10:39:20,658 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-07-21 10:39:20,659 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-07-21 10:39:20,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:39:20,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:39:20 BoogieIcfgContainer
[2020-07-21 10:39:20,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-21 10:39:20,890 INFO L168 Benchmark]: Toolchain (without parser) took 940.03 ms. Allocated memory was 143.7 MB in the beginning and 202.4 MB in the end (delta: 58.7 MB). Free memory was 103.0 MB in the beginning and 158.3 MB in the end (delta: -55.2 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB.
[2020-07-21 10:39:20,891 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 143.7 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-07-21 10:39:20,893 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.21 ms. Allocated memory is still 143.7 MB. Free memory was 102.6 MB in the beginning and 93.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB.
[2020-07-21 10:39:20,894 INFO L168 Benchmark]: Boogie Preprocessor took 111.96 ms. Allocated memory was 143.7 MB in the beginning and 202.4 MB in the end (delta: 58.7 MB). Free memory was 93.0 MB in the beginning and 180.9 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB.
[2020-07-21 10:39:20,895 INFO L168 Benchmark]: RCFGBuilder took 197.16 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 171.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
[2020-07-21 10:39:20,896 INFO L168 Benchmark]: TraceAbstraction took 378.43 ms. Allocated memory is still 202.4 MB. Free memory was 171.0 MB in the beginning and 158.3 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB.
[2020-07-21 10:39:20,901 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.25 ms. Allocated memory is still 143.7 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 245.21 ms. Allocated memory is still 143.7 MB. Free memory was 102.6 MB in the beginning and 93.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 111.96 ms. Allocated memory was 143.7 MB in the beginning and 202.4 MB in the end (delta: 58.7 MB). Free memory was 93.0 MB in the beginning and 180.9 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 197.16 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 171.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 378.43 ms. Allocated memory is still 202.4 MB. Free memory was 171.0 MB in the beginning and 158.3 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 8]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of to_int at line 8, overapproximation of someBinaryArithmeticFLOAToperation at line 6.
Possible FailurePath:
[L6] float fs1=2.0f/6.0f;
[L7] float fs2=fs1*6.0f;
[L8] COND TRUE !((int)fs2==2)
[L8] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...