/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/float-newlib/double_req_bl_1032b.c
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This is Ultimate 0.1.25-d623d84
[2020-07-21 10:39:47,105 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-07-21 10:39:47,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-21 10:39:47,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-21 10:39:47,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-21 10:39:47,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-21 10:39:47,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-21 10:39:47,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-21 10:39:47,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-21 10:39:47,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-21 10:39:47,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-07-21 10:39:47,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-21 10:39:47,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-21 10:39:47,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-21 10:39:47,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-21 10:39:47,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-21 10:39:47,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-21 10:39:47,135 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-21 10:39:47,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-21 10:39:47,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-21 10:39:47,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-21 10:39:47,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-21 10:39:47,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-07-21 10:39:47,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-21 10:39:47,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-21 10:39:47,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-21 10:39:47,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-21 10:39:47,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-21 10:39:47,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-21 10:39:47,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-21 10:39:47,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-21 10:39:47,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-21 10:39:47,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
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[2020-07-21 10:39:47,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-21 10:39:47,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-21 10:39:47,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-21 10:39:47,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-21 10:39:47,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-21 10:39:47,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-07-21 10:39:47,156 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 10:39:47,170 INFO L113 SettingsManager]: Loading preferences was successful
[2020-07-21 10:39:47,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-21 10:39:47,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-21 10:39:47,172 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-07-21 10:39:47,172 INFO L138 SettingsManager]: * Use SBE=true
[2020-07-21 10:39:47,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-21 10:39:47,172 INFO L138 SettingsManager]: * sizeof long=4
[2020-07-21 10:39:47,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-07-21 10:39:47,173 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-07-21 10:39:47,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-07-21 10:39:47,173 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-07-21 10:39:47,173 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-21 10:39:47,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-07-21 10:39:47,174 INFO L138 SettingsManager]: * sizeof long double=12
[2020-07-21 10:39:47,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-07-21 10:39:47,174 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-07-21 10:39:47,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-07-21 10:39:47,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-21 10:39:47,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-07-21 10:39:47,175 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-07-21 10:39:47,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-07-21 10:39:47,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-21 10:39:47,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-21 10:39:47,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-07-21 10:39:47,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-21 10:39:47,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-07-21 10:39:47,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:39:47,177 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-21 10:39:47,177 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-07-21 10:39:47,177 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 10:39:47,486 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-21 10:39:47,500 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-21 10:39:47,503 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-21 10:39:47,505 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-07-21 10:39:47,505 INFO L275 PluginConnector]: CDTParser initialized
[2020-07-21 10:39:47,506 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032b.c
[2020-07-21 10:39:47,569 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8dbaf292/a96a4aeeef02415189bc3d5b5eee6511/FLAGe70352885
[2020-07-21 10:39:48,059 INFO L306 CDTParser]: Found 1 translation units.
[2020-07-21 10:39:48,060 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032b.c
[2020-07-21 10:39:48,067 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8dbaf292/a96a4aeeef02415189bc3d5b5eee6511/FLAGe70352885
[2020-07-21 10:39:48,406 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8dbaf292/a96a4aeeef02415189bc3d5b5eee6511
[2020-07-21 10:39:48,415 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-21 10:39:48,417 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-21 10:39:48,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-21 10:39:48,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-21 10:39:48,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-21 10:39:48,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:39:48" (1/1) ...
[2020-07-21 10:39:48,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d6ec712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:48, skipping insertion in model container
[2020-07-21 10:39:48,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:39:48" (1/1) ...
[2020-07-21 10:39:48,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-07-21 10:39:48,453 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-07-21 10:39:48,660 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-21 10:39:48,664 INFO L203 MainTranslator]: Completed pre-run
[2020-07-21 10:39:48,701 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-21 10:39:48,812 INFO L208 MainTranslator]: Completed translation
[2020-07-21 10:39:48,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:48 WrapperNode
[2020-07-21 10:39:48,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-21 10:39:48,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-21 10:39:48,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-21 10:39:48,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-07-21 10:39:48,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:48" (1/1) ...
[2020-07-21 10:39:48,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:48" (1/1) ...
[2020-07-21 10:39:48,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:48" (1/1) ...
[2020-07-21 10:39:48,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:48" (1/1) ...
[2020-07-21 10:39:48,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:48" (1/1) ...
[2020-07-21 10:39:48,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:48" (1/1) ...
[2020-07-21 10:39:48,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:48" (1/1) ...
[2020-07-21 10:39:48,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-21 10:39:48,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-21 10:39:48,894 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-07-21 10:39:48,894 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-07-21 10:39:48,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:48" (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 10:39:48,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-21 10:39:48,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-21 10:39:48,954 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double
[2020-07-21 10:39:48,954 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double
[2020-07-21 10:39:48,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double
[2020-07-21 10:39:48,954 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-07-21 10:39:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-21 10:39:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double
[2020-07-21 10:39:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure round_double
[2020-07-21 10:39:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-07-21 10:39:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2020-07-21 10:39:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-07-21 10:39:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-07-21 10:39:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-07-21 10:39:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2020-07-21 10:39:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double
[2020-07-21 10:39:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-07-21 10:39:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-21 10:39:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-21 10:39:49,368 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-21 10:39:49,368 INFO L295 CfgBuilder]: Removed 6 assume(true) statements.
[2020-07-21 10:39:49,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:39:49 BoogieIcfgContainer
[2020-07-21 10:39:49,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-21 10:39:49,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-21 10:39:49,373 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-07-21 10:39:49,376 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-07-21 10:39:49,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:39:48" (1/3) ...
[2020-07-21 10:39:49,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f42c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:39:49, skipping insertion in model container
[2020-07-21 10:39:49,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:48" (2/3) ...
[2020-07-21 10:39:49,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f42c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:39:49, skipping insertion in model container
[2020-07-21 10:39:49,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:39:49" (3/3) ...
[2020-07-21 10:39:49,380 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032b.c
[2020-07-21 10:39:49,391 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-21 10:39:49,399 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-21 10:39:49,413 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-21 10:39:49,437 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-07-21 10:39:49,438 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-07-21 10:39:49,438 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-21 10:39:49,438 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-21 10:39:49,438 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-21 10:39:49,439 INFO L380 AbstractCegarLoop]: Difference is false
[2020-07-21 10:39:49,439 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-21 10:39:49,439 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-21 10:39:49,459 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states.
[2020-07-21 10:39:49,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2020-07-21 10:39:49,466 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-21 10:39:49,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 10:39:49,468 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 10:39:49,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 10:39:49,474 INFO L82 PathProgramCache]: Analyzing trace with hash -597726452, now seen corresponding path program 1 times
[2020-07-21 10:39:49,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 10:39:49,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351626173]
[2020-07-21 10:39:49,483 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 10:39:49,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-21 10:39:49,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core
[2020-07-21 10:39:49,574 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 10:39:49,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 10:39:49,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 10:39:49,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351626173]
[2020-07-21 10:39:49,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 10:39:49,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-07-21 10:39:49,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482889002]
[2020-07-21 10:39:49,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-07-21 10:39:49,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 10:39:49,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-07-21 10:39:49,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-21 10:39:49,622 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states.
[2020-07-21 10:39:49,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 10:39:49,650 INFO L93 Difference]: Finished difference Result 78 states and 109 transitions.
[2020-07-21 10:39:49,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2020-07-21 10:39:49,651 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19
[2020-07-21 10:39:49,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 10:39:49,661 INFO L225 Difference]: With dead ends: 78
[2020-07-21 10:39:49,661 INFO L226 Difference]: Without dead ends: 39
[2020-07-21 10:39:49,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-21 10:39:49,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2020-07-21 10:39:49,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39.
[2020-07-21 10:39:49,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states.
[2020-07-21 10:39:49,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions.
[2020-07-21 10:39:49,709 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 19
[2020-07-21 10:39:49,710 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-21 10:39:49,710 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions.
[2020-07-21 10:39:49,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-07-21 10:39:49,711 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions.
[2020-07-21 10:39:49,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-07-21 10:39:49,712 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-21 10:39:49,712 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]
[2020-07-21 10:39:49,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:39:49,928 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 10:39:49,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 10:39:49,929 INFO L82 PathProgramCache]: Analyzing trace with hash -524929330, now seen corresponding path program 1 times
[2020-07-21 10:39:49,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 10:39:49,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678353958]
[2020-07-21 10:39:49,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
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
[2020-07-21 10:39:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-21 10:39:50,001 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-21 10:39:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-21 10:39:50,028 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-21 10:39:50,063 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-07-21 10:39:50,063 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-07-21 10:39:50,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 10:39:50,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:39:50 BoogieIcfgContainer
[2020-07-21 10:39:50,314 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-21 10:39:50,316 INFO L168 Benchmark]: Toolchain (without parser) took 1899.11 ms. Allocated memory was 134.2 MB in the beginning and 199.2 MB in the end (delta: 65.0 MB). Free memory was 99.3 MB in the beginning and 114.5 MB in the end (delta: -15.1 MB). Peak memory consumption was 49.9 MB. Max. memory is 7.1 GB.
[2020-07-21 10:39:50,318 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 134.2 MB. Free memory was 117.3 MB in the beginning and 117.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-07-21 10:39:50,319 INFO L168 Benchmark]: CACSL2BoogieTranslator took 396.02 ms. Allocated memory was 134.2 MB in the beginning and 199.2 MB in the end (delta: 65.0 MB). Free memory was 98.9 MB in the beginning and 178.1 MB in the end (delta: -79.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB.
[2020-07-21 10:39:50,320 INFO L168 Benchmark]: Boogie Preprocessor took 78.11 ms. Allocated memory is still 199.2 MB. Free memory was 178.1 MB in the beginning and 175.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB.
[2020-07-21 10:39:50,321 INFO L168 Benchmark]: RCFGBuilder took 478.44 ms. Allocated memory is still 199.2 MB. Free memory was 175.4 MB in the beginning and 153.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB.
[2020-07-21 10:39:50,322 INFO L168 Benchmark]: TraceAbstraction took 940.50 ms. Allocated memory is still 199.2 MB. Free memory was 152.6 MB in the beginning and 114.5 MB in the end (delta: 38.2 MB). Peak memory consumption was 38.2 MB. Max. memory is 7.1 GB.
[2020-07-21 10:39:50,326 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.19 ms. Allocated memory is still 134.2 MB. Free memory was 117.3 MB in the beginning and 117.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 396.02 ms. Allocated memory was 134.2 MB in the beginning and 199.2 MB in the end (delta: 65.0 MB). Free memory was 98.9 MB in the beginning and 178.1 MB in the end (delta: -79.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 78.11 ms. Allocated memory is still 199.2 MB. Free memory was 178.1 MB in the beginning and 175.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 478.44 ms. Allocated memory is still 199.2 MB. Free memory was 175.4 MB in the beginning and 153.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 940.50 ms. Allocated memory is still 199.2 MB. Free memory was 152.6 MB in the beginning and 114.5 MB in the end (delta: 38.2 MB). Peak memory consumption was 38.2 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 91]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of shiftRight at line 34, overapproximation of someUnaryDOUBLEoperation at line 86, overapproximation of bitwiseAnd at line 35, overapproximation of someBinaryDOUBLEComparisonOperation at line 90.
Possible FailurePath:
[L86] double x = -0.0;
[L87] CALL, EXPR round_double(x)
VAL [\old(x)=3]
[L18] __int32_t msw, exponent_less_1023;
[L19] __uint32_t lsw;
VAL [\old(x)=3, x=3]
[L21] ieee_double_shape_type ew_u;
[L22] ew_u.value = (x)
[L23] EXPR ew_u.parts.msw
[L23] (msw) = ew_u.parts.msw
[L24] EXPR ew_u.parts.lsw
[L24] (lsw) = ew_u.parts.lsw
[L26] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023
VAL [\old(x)=3, exponent_less_1023=0, lsw=0, msw=0, x=3]
[L27] COND TRUE exponent_less_1023 < 20
VAL [\old(x)=3, exponent_less_1023=0, lsw=0, msw=0, x=3]
[L28] COND FALSE !(exponent_less_1023 < 0)
[L34] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023;
VAL [\old(x)=3, exponent_less_1023=0, lsw=0, msw=0, x=3]
[L35] COND TRUE (msw & exponent_mask) == 0 && lsw == 0
[L36] return x;
VAL [\old(x)=3, \result=3, exponent_less_1023=0, lsw=0, msw=0, x=3]
[L87] RET, EXPR round_double(x)
VAL [round_double(x)=3, x=3]
[L87] double res = round_double(x);
[L90] EXPR res == -0.0 && __signbit_double(res) == 1
VAL [res=3, res == -0.0 && __signbit_double(res) == 1=0, x=3]
[L90] COND TRUE !(res == -0.0 && __signbit_double(res) == 1)
[L91] __VERIFIER_error()
VAL [res=3, x=3]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 62 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...