/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1072b.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.0-b8ad66e
[2020-10-23 17:55:57,729 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-10-23 17:55:57,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-23 17:55:57,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-23 17:55:57,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-23 17:55:57,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-23 17:55:57,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-23 17:55:57,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-23 17:55:57,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-23 17:55:57,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-23 17:55:57,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-10-23 17:55:57,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-23 17:55:57,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-23 17:55:57,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-23 17:55:57,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-23 17:55:57,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-23 17:55:57,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-23 17:55:57,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-23 17:55:57,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-23 17:55:57,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-23 17:55:57,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-23 17:55:57,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-23 17:55:57,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-10-23 17:55:57,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-23 17:55:57,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-23 17:55:57,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-23 17:55:57,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-23 17:55:57,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-23 17:55:57,824 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-23 17:55:57,825 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-23 17:55:57,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-23 17:55:57,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-23 17:55:57,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-23 17:55:57,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-23 17:55:57,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-23 17:55:57,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-23 17:55:57,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-23 17:55:57,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-23 17:55:57,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-23 17:55:57,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-23 17:55:57,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-10-23 17:55:57,835 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
[2020-10-23 17:55:57,863 INFO L113 SettingsManager]: Loading preferences was successful
[2020-10-23 17:55:57,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-23 17:55:57,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-23 17:55:57,865 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-10-23 17:55:57,865 INFO L138 SettingsManager]: * Use SBE=true
[2020-10-23 17:55:57,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-23 17:55:57,866 INFO L138 SettingsManager]: * sizeof long=4
[2020-10-23 17:55:57,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-10-23 17:55:57,867 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-10-23 17:55:57,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-10-23 17:55:57,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-10-23 17:55:57,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-23 17:55:57,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-10-23 17:55:57,868 INFO L138 SettingsManager]: * sizeof long double=12
[2020-10-23 17:55:57,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-10-23 17:55:57,868 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-10-23 17:55:57,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-10-23 17:55:57,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-23 17:55:57,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-10-23 17:55:57,869 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-10-23 17:55:57,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-10-23 17:55:57,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-23 17:55:57,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-23 17:55:57,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-10-23 17:55:57,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-23 17:55:57,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-10-23 17:55:57,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-23 17:55:57,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-23 17:55:57,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-10-23 17:55:57,872 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2020-10-23 17:55:58,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-23 17:55:58,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-23 17:55:58,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-23 17:55:58,326 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-10-23 17:55:58,327 INFO L275 PluginConnector]: CDTParser initialized
[2020-10-23 17:55:58,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1072b.c
[2020-10-23 17:55:58,423 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdc761fc3/ff45e05b2cbc4da1a7297bd1dbddfed5/FLAGdee4a7d10
[2020-10-23 17:55:59,105 INFO L306 CDTParser]: Found 1 translation units.
[2020-10-23 17:55:59,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1072b.c
[2020-10-23 17:55:59,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdc761fc3/ff45e05b2cbc4da1a7297bd1dbddfed5/FLAGdee4a7d10
[2020-10-23 17:55:59,471 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdc761fc3/ff45e05b2cbc4da1a7297bd1dbddfed5
[2020-10-23 17:55:59,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-23 17:55:59,481 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-23 17:55:59,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-23 17:55:59,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-23 17:55:59,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-23 17:55:59,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:59" (1/1) ...
[2020-10-23 17:55:59,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc51e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:59, skipping insertion in model container
[2020-10-23 17:55:59,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:59" (1/1) ...
[2020-10-23 17:55:59,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-10-23 17:55:59,533 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-10-23 17:55:59,712 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-10-23 17:55:59,725 INFO L203 MainTranslator]: Completed pre-run
[2020-10-23 17:55:59,780 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-10-23 17:55:59,804 INFO L208 MainTranslator]: Completed translation
[2020-10-23 17:55:59,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:59 WrapperNode
[2020-10-23 17:55:59,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-23 17:55:59,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-23 17:55:59,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-23 17:55:59,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-10-23 17:55:59,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:59" (1/1) ...
[2020-10-23 17:55:59,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:59" (1/1) ...
[2020-10-23 17:55:59,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:59" (1/1) ...
[2020-10-23 17:55:59,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:59" (1/1) ...
[2020-10-23 17:55:59,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:59" (1/1) ...
[2020-10-23 17:55:59,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:59" (1/1) ...
[2020-10-23 17:55:59,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:59" (1/1) ...
[2020-10-23 17:55:59,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-23 17:55:59,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-23 17:55:59,858 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-10-23 17:55:59,858 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-10-23 17:55:59,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:59" (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
[2020-10-23 17:55:59,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-23 17:55:59,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-23 17:55:59,951 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-23 17:55:59,951 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_float
[2020-10-23 17:55:59,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float
[2020-10-23 17:55:59,951 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-10-23 17:55:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-10-23 17:55:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-23 17:55:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-23 17:55:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-23 17:55:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_float
[2020-10-23 17:55:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2020-10-23 17:55:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-10-23 17:55:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-23 17:55:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-10-23 17:55:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2020-10-23 17:55:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float
[2020-10-23 17:55:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-10-23 17:55:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-23 17:55:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-23 17:55:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-23 17:56:00,563 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-23 17:56:00,564 INFO L298 CfgBuilder]: Removed 8 assume(true) statements.
[2020-10-23 17:56:00,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:56:00 BoogieIcfgContainer
[2020-10-23 17:56:00,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-23 17:56:00,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-23 17:56:00,568 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-10-23 17:56:00,572 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-10-23 17:56:00,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:55:59" (1/3) ...
[2020-10-23 17:56:00,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40a027c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:56:00, skipping insertion in model container
[2020-10-23 17:56:00,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:59" (2/3) ...
[2020-10-23 17:56:00,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40a027c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:56:00, skipping insertion in model container
[2020-10-23 17:56:00,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:56:00" (3/3) ...
[2020-10-23 17:56:00,576 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1072b.c
[2020-10-23 17:56:00,590 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2020-10-23 17:56:00,595 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-23 17:56:00,610 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-23 17:56:00,654 INFO L377 AbstractCegarLoop]: Interprodecural is true
[2020-10-23 17:56:00,655 INFO L378 AbstractCegarLoop]: Hoare is true
[2020-10-23 17:56:00,655 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP
[2020-10-23 17:56:00,655 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-23 17:56:00,656 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-23 17:56:00,656 INFO L382 AbstractCegarLoop]: Difference is false
[2020-10-23 17:56:00,656 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-23 17:56:00,656 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-23 17:56:00,682 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states.
[2020-10-23 17:56:00,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-23 17:56:00,690 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-23 17:56:00,691 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]
[2020-10-23 17:56:00,692 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 17:56:00,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 17:56:00,702 INFO L82 PathProgramCache]: Analyzing trace with hash -265902931, now seen corresponding path program 1 times
[2020-10-23 17:56:00,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-23 17:56:00,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750312316]
[2020-10-23 17:56:00,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 17:56:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 17:56:00,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 17:56:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 17:56:01,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-23 17:56:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 17:56:01,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-10-23 17:56:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 17:56:01,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-23 17:56:01,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750312316]
[2020-10-23 17:56:01,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-23 17:56:01,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-23 17:56:01,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778233904]
[2020-10-23 17:56:01,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-23 17:56:01,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-23 17:56:01,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-23 17:56:01,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-23 17:56:01,065 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 4 states.
[2020-10-23 17:56:01,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 17:56:01,300 INFO L93 Difference]: Finished difference Result 71 states and 95 transitions.
[2020-10-23 17:56:01,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-10-23 17:56:01,302 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25
[2020-10-23 17:56:01,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 17:56:01,310 INFO L225 Difference]: With dead ends: 71
[2020-10-23 17:56:01,310 INFO L226 Difference]: Without dead ends: 34
[2020-10-23 17:56:01,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-23 17:56:01,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2020-10-23 17:56:01,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34.
[2020-10-23 17:56:01,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2020-10-23 17:56:01,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions.
[2020-10-23 17:56:01,360 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 25
[2020-10-23 17:56:01,360 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-23 17:56:01,360 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions.
[2020-10-23 17:56:01,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-23 17:56:01,361 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions.
[2020-10-23 17:56:01,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-10-23 17:56:01,362 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-23 17:56:01,362 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]
[2020-10-23 17:56:01,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-23 17:56:01,363 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 17:56:01,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 17:56:01,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1714915755, now seen corresponding path program 1 times
[2020-10-23 17:56:01,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-23 17:56:01,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3636062]
[2020-10-23 17:56:01,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 17:56:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-23 17:56:01,537 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-10-23 17:56:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-23 17:56:01,632 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-10-23 17:56:01,686 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2020-10-23 17:56:01,686 INFO L523 BasicCegarLoop]: Counterexample might be feasible
[2020-10-23 17:56:01,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-23 17:56:01,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:56:01 BoogieIcfgContainer
[2020-10-23 17:56:01,756 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-10-23 17:56:01,760 INFO L168 Benchmark]: Toolchain (without parser) took 2282.13 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 78.4 MB in the end (delta: 48.5 MB). Peak memory consumption was 48.0 MB. Max. memory is 8.0 GB.
[2020-10-23 17:56:01,760 INFO L168 Benchmark]: CDTParser took 1.29 ms. Allocated memory is still 151.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2020-10-23 17:56:01,761 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.99 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 115.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
[2020-10-23 17:56:01,762 INFO L168 Benchmark]: Boogie Preprocessor took 50.34 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 113.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2020-10-23 17:56:01,763 INFO L168 Benchmark]: RCFGBuilder took 708.79 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 129.2 MB in the end (delta: -15.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB.
[2020-10-23 17:56:01,764 INFO L168 Benchmark]: TraceAbstraction took 1188.32 ms. Allocated memory is still 151.0 MB. Free memory was 128.7 MB in the beginning and 78.4 MB in the end (delta: 50.3 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB.
[2020-10-23 17:56:01,768 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 1.29 ms. Allocated memory is still 151.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 317.99 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 115.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 50.34 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 113.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 708.79 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 129.2 MB in the end (delta: -15.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 1188.32 ms. Allocated memory is still 151.0 MB. Free memory was 128.7 MB in the beginning and 78.4 MB in the end (delta: 50.3 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 39, overapproximation of bitwiseAnd at line 52.
Possible FailurePath:
[L63] float x = -1.0f / 0.0f;
[L64] CALL, EXPR trunc_float(x)
VAL [\old(x)=8589934596]
[L14] __int32_t signbit, w, exponent_less_127;
VAL [\old(x)=8589934596, x=8589934596]
[L16] ieee_float_shape_type gf_u;
[L17] gf_u.value = (x)
[L18] EXPR gf_u.word
[L18] (w) = gf_u.word
[L20] signbit = w & 0x80000000
[L21] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127
VAL [\old(x)=8589934596, exponent_less_127=255, signbit=-3, w=-2, x=8589934596]
[L22] COND FALSE !(exponent_less_127 < 23)
VAL [\old(x)=8589934596, exponent_less_127=255, signbit=-3, w=-2, x=8589934596]
[L38] COND TRUE exponent_less_127 == 255
[L39] return x + x;
VAL [\old(x)=8589934596, exponent_less_127=255, signbit=-3, w=-2, x=8589934596]
[L64] RET, EXPR trunc_float(x)
VAL [trunc_float(x)=8589934594, x=8589934596]
[L64] float res = trunc_float(x);
[L67] CALL, EXPR isinf_float(res)
VAL [\old(x)=8589934594]
[L46] __int32_t ix;
VAL [\old(x)=8589934594, x=8589934594]
[L48] ieee_float_shape_type gf_u;
[L49] gf_u.value = (x)
[L50] EXPR gf_u.word
[L50] (ix) = gf_u.word
[L52] ix &= 0x7fffffff
[L53] return ((ix) == 0x7f800000L);
VAL [\old(x)=8589934594, \result=0, ix=0, x=8589934594]
[L67] RET, EXPR isinf_float(res)
VAL [isinf_float(res)=0, res=8589934594, x=8589934596]
[L67] COND TRUE !isinf_float(res)
[L68] CALL reach_error()
[L3] __assert_fail("0", "float_req_bl_1072b.c", 3, "reach_error")
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 8 SDslu, 29 SDs, 0 SdLazy, 36 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1872 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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...