/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/double_req_bl_1031.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.0-7d8eed3
[2020-11-06 21:57:13,751 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-11-06 21:57:13,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-11-06 21:57:13,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-11-06 21:57:13,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-11-06 21:57:13,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-11-06 21:57:13,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-11-06 21:57:13,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-11-06 21:57:13,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-11-06 21:57:13,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-11-06 21:57:13,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-11-06 21:57:13,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-11-06 21:57:13,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-11-06 21:57:13,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-11-06 21:57:13,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-11-06 21:57:13,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-11-06 21:57:13,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-11-06 21:57:13,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-11-06 21:57:13,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-11-06 21:57:13,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-11-06 21:57:13,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-11-06 21:57:13,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-11-06 21:57:13,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-11-06 21:57:13,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-11-06 21:57:13,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2020-11-06 21:57:13,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-11-06 21:57:13,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
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[2020-11-06 21:57:13,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
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[2020-11-06 21:57:13,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2020-11-06 21:57:13,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-11-06 21:57:13,898 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
[2020-11-06 21:57:13,953 INFO L113 SettingsManager]: Loading preferences was successful
[2020-11-06 21:57:13,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-11-06 21:57:13,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-11-06 21:57:13,958 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-11-06 21:57:13,958 INFO L138 SettingsManager]: * Use SBE=true
[2020-11-06 21:57:13,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-11-06 21:57:13,959 INFO L138 SettingsManager]: * sizeof long=4
[2020-11-06 21:57:13,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-11-06 21:57:13,959 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-11-06 21:57:13,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-11-06 21:57:13,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-11-06 21:57:13,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-11-06 21:57:13,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-11-06 21:57:13,961 INFO L138 SettingsManager]: * sizeof long double=12
[2020-11-06 21:57:13,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-11-06 21:57:13,961 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-11-06 21:57:13,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-11-06 21:57:13,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-11-06 21:57:13,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-11-06 21:57:13,962 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-11-06 21:57:13,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-11-06 21:57:13,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-11-06 21:57:13,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-11-06 21:57:13,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-11-06 21:57:13,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-11-06 21:57:13,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-11-06 21:57:13,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-11-06 21:57:13,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-11-06 21:57:13,964 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-11-06 21:57:13,964 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2020-11-06 21:57:14,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-11-06 21:57:14,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-11-06 21:57:14,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-11-06 21:57:14,425 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-11-06 21:57:14,426 INFO L275 PluginConnector]: CDTParser initialized
[2020-11-06 21:57:14,427 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1031.c
[2020-11-06 21:57:14,502 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d4464560/3d82c84fb9da4d1ebdf51affb48b556c/FLAGc70c1ae8c
[2020-11-06 21:57:15,128 INFO L306 CDTParser]: Found 1 translation units.
[2020-11-06 21:57:15,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1031.c
[2020-11-06 21:57:15,139 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d4464560/3d82c84fb9da4d1ebdf51affb48b556c/FLAGc70c1ae8c
[2020-11-06 21:57:15,436 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d4464560/3d82c84fb9da4d1ebdf51affb48b556c
[2020-11-06 21:57:15,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-11-06 21:57:15,452 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-11-06 21:57:15,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-11-06 21:57:15,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-11-06 21:57:15,462 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-11-06 21:57:15,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:15" (1/1) ...
[2020-11-06 21:57:15,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27079986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:15, skipping insertion in model container
[2020-11-06 21:57:15,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:15" (1/1) ...
[2020-11-06 21:57:15,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-11-06 21:57:15,505 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-11-06 21:57:15,736 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-11-06 21:57:15,751 INFO L203 MainTranslator]: Completed pre-run
[2020-11-06 21:57:15,780 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-11-06 21:57:15,798 INFO L208 MainTranslator]: Completed translation
[2020-11-06 21:57:15,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:15 WrapperNode
[2020-11-06 21:57:15,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-11-06 21:57:15,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-11-06 21:57:15,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-11-06 21:57:15,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-11-06 21:57:15,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:15" (1/1) ...
[2020-11-06 21:57:15,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:15" (1/1) ...
[2020-11-06 21:57:15,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:15" (1/1) ...
[2020-11-06 21:57:15,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:15" (1/1) ...
[2020-11-06 21:57:15,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:15" (1/1) ...
[2020-11-06 21:57:15,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:15" (1/1) ...
[2020-11-06 21:57:15,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:15" (1/1) ...
[2020-11-06 21:57:15,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-11-06 21:57:15,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-11-06 21:57:15,852 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-11-06 21:57:15,853 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-11-06 21:57:15,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:15" (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
[2020-11-06 21:57:15,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-11-06 21:57:15,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-11-06 21:57:15,935 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2020-11-06 21:57:15,936 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double
[2020-11-06 21:57:15,936 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double
[2020-11-06 21:57:15,936 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-11-06 21:57:15,936 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-11-06 21:57:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-11-06 21:57:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2020-11-06 21:57:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-11-06 21:57:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double
[2020-11-06 21:57:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure round_double
[2020-11-06 21:57:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2020-11-06 21:57:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-11-06 21:57:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-11-06 21:57:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-11-06 21:57:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2020-11-06 21:57:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-11-06 21:57:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-11-06 21:57:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2020-11-06 21:57:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-11-06 21:57:16,413 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-11-06 21:57:16,414 INFO L298 CfgBuilder]: Removed 4 assume(true) statements.
[2020-11-06 21:57:16,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:16 BoogieIcfgContainer
[2020-11-06 21:57:16,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-11-06 21:57:16,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-11-06 21:57:16,419 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-11-06 21:57:16,422 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-11-06 21:57:16,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:57:15" (1/3) ...
[2020-11-06 21:57:16,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@639b0de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:16, skipping insertion in model container
[2020-11-06 21:57:16,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:15" (2/3) ...
[2020-11-06 21:57:16,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@639b0de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:16, skipping insertion in model container
[2020-11-06 21:57:16,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:16" (3/3) ...
[2020-11-06 21:57:16,426 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c
[2020-11-06 21:57:16,444 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2020-11-06 21:57:16,448 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-11-06 21:57:16,461 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-11-06 21:57:16,490 INFO L377 AbstractCegarLoop]: Interprodecural is true
[2020-11-06 21:57:16,490 INFO L378 AbstractCegarLoop]: Hoare is true
[2020-11-06 21:57:16,491 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP
[2020-11-06 21:57:16,491 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-11-06 21:57:16,491 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-11-06 21:57:16,491 INFO L382 AbstractCegarLoop]: Difference is false
[2020-11-06 21:57:16,491 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-11-06 21:57:16,492 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-11-06 21:57:16,510 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states.
[2020-11-06 21:57:16,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-11-06 21:57:16,518 INFO L414 BasicCegarLoop]: Found error trace
[2020-11-06 21:57:16,519 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]
[2020-11-06 21:57:16,520 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-06 21:57:16,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-11-06 21:57:16,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1518435197, now seen corresponding path program 1 times
[2020-11-06 21:57:16,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-06 21:57:16,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49739971]
[2020-11-06 21:57:16,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-06 21:57:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 21:57:16,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-06 21:57:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 21:57:16,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-11-06 21:57:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 21:57:16,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2020-11-06 21:57:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 21:57:16,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-06 21:57:16,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49739971]
[2020-11-06 21:57:16,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-11-06 21:57:16,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-11-06 21:57:16,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555824728]
[2020-11-06 21:57:16,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-11-06 21:57:16,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-06 21:57:16,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-11-06 21:57:16,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-11-06 21:57:16,890 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 4 states.
[2020-11-06 21:57:17,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-06 21:57:17,168 INFO L93 Difference]: Finished difference Result 75 states and 100 transitions.
[2020-11-06 21:57:17,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-11-06 21:57:17,171 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24
[2020-11-06 21:57:17,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-06 21:57:17,182 INFO L225 Difference]: With dead ends: 75
[2020-11-06 21:57:17,182 INFO L226 Difference]: Without dead ends: 36
[2020-11-06 21:57:17,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-11-06 21:57:17,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2020-11-06 21:57:17,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36.
[2020-11-06 21:57:17,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states.
[2020-11-06 21:57:17,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions.
[2020-11-06 21:57:17,233 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 24
[2020-11-06 21:57:17,233 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-11-06 21:57:17,233 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions.
[2020-11-06 21:57:17,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-11-06 21:57:17,234 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions.
[2020-11-06 21:57:17,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-11-06 21:57:17,235 INFO L414 BasicCegarLoop]: Found error trace
[2020-11-06 21:57:17,235 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]
[2020-11-06 21:57:17,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-11-06 21:57:17,236 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-06 21:57:17,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-11-06 21:57:17,236 INFO L82 PathProgramCache]: Analyzing trace with hash -313897119, now seen corresponding path program 1 times
[2020-11-06 21:57:17,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-06 21:57:17,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862172983]
[2020-11-06 21:57:17,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-06 21:57:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-11-06 21:57:17,299 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-11-06 21:57:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-11-06 21:57:17,372 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-11-06 21:57:17,427 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2020-11-06 21:57:17,428 INFO L523 BasicCegarLoop]: Counterexample might be feasible
[2020-11-06 21:57:17,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-11-06 21:57:17,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:57:17 BoogieIcfgContainer
[2020-11-06 21:57:17,508 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-11-06 21:57:17,514 INFO L168 Benchmark]: Toolchain (without parser) took 2066.93 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 101.0 MB in the beginning and 133.1 MB in the end (delta: -32.2 MB). Peak memory consumption was 49.0 MB. Max. memory is 8.0 GB.
[2020-11-06 21:57:17,515 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 125.8 MB. Free memory is still 86.0 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2020-11-06 21:57:17,517 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.59 ms. Allocated memory is still 125.8 MB. Free memory was 100.3 MB in the beginning and 89.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB.
[2020-11-06 21:57:17,519 INFO L168 Benchmark]: Boogie Preprocessor took 51.61 ms. Allocated memory is still 125.8 MB. Free memory was 89.9 MB in the beginning and 88.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2020-11-06 21:57:17,520 INFO L168 Benchmark]: RCFGBuilder took 564.22 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 88.1 MB in the beginning and 129.2 MB in the end (delta: -41.2 MB). Peak memory consumption was 19.7 MB. Max. memory is 8.0 GB.
[2020-11-06 21:57:17,522 INFO L168 Benchmark]: TraceAbstraction took 1089.89 ms. Allocated memory is still 151.0 MB. Free memory was 128.8 MB in the beginning and 133.1 MB in the end (delta: -4.3 MB). Peak memory consumption was 51.4 MB. Max. memory is 8.0 GB.
[2020-11-06 21:57:17,533 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.17 ms. Allocated memory is still 125.8 MB. Free memory is still 86.0 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 341.59 ms. Allocated memory is still 125.8 MB. Free memory was 100.3 MB in the beginning and 89.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 51.61 ms. Allocated memory is still 125.8 MB. Free memory was 89.9 MB in the beginning and 88.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 564.22 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 88.1 MB in the beginning and 129.2 MB in the end (delta: -41.2 MB). Peak memory consumption was 19.7 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 1089.89 ms. Allocated memory is still 151.0 MB. Free memory was 128.8 MB in the beginning and 133.1 MB in the end (delta: -4.3 MB). Peak memory consumption was 51.4 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 shiftRight at line 36, overapproximation of someBinaryArithmeticDOUBLEoperation at line 76, overapproximation of bitwiseAnd at line 37, overapproximation of someBinaryDOUBLEComparisonOperation at line 17.
Possible FailurePath:
[L76] double x = 0.0 / 0.0;
[L77] CALL, EXPR round_double(x)
VAL [\old(x)=4294967297]
[L20] __int32_t msw, exponent_less_1023;
[L21] __uint32_t lsw;
VAL [\old(x)=4294967297, x=4294967297]
[L23] ieee_double_shape_type ew_u;
[L24] ew_u.value = (x)
[L25] EXPR ew_u.parts.msw
[L25] (msw) = ew_u.parts.msw
[L26] EXPR ew_u.parts.lsw
[L26] (lsw) = ew_u.parts.lsw
[L28] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023
VAL [\old(x)=4294967297, exponent_less_1023=0, lsw=0, msw=-1, x=4294967297]
[L29] COND TRUE exponent_less_1023 < 20
VAL [\old(x)=4294967297, exponent_less_1023=0, lsw=0, msw=-1, x=4294967297]
[L30] COND FALSE !(exponent_less_1023 < 0)
[L36] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023;
VAL [\old(x)=4294967297, exponent_less_1023=0, lsw=0, msw=-1, x=4294967297]
[L37] COND TRUE (msw & exponent_mask) == 0 && lsw == 0
[L38] return x;
VAL [\old(x)=4294967297, \result=4294967297, exponent_less_1023=0, lsw=0, msw=-1, x=4294967297]
[L77] RET, EXPR round_double(x)
VAL [round_double(x)=4294967297, x=4294967297]
[L77] double res = round_double(x);
[L80] CALL, EXPR isnan_double(res)
VAL [\old(x)=4294967297]
[L17] return x != x;
VAL [\old(x)=4294967297, \result=0, x=4294967297]
[L80] RET, EXPR isnan_double(res)
VAL [isnan_double(res)=0, res=4294967297, x=4294967297]
[L80] COND TRUE !isnan_double(res)
[L81] CALL reach_error()
[L3] __assert_fail("0", "double_req_bl_1031.c", 3, "reach_error")
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 10 SDslu, 35 SDs, 0 SdLazy, 41 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1495 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...