/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_1072c.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.0-b8ad66e
[2020-10-23 17:55:58,329 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-10-23 17:55:58,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-23 17:55:58,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-23 17:55:58,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-23 17:55:58,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-23 17:55:58,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-23 17:55:58,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-23 17:55:58,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-23 17:55:58,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-10-23 17:55:58,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-23 17:55:58,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-23 17:55:58,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-23 17:55:58,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-23 17:55:58,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-23 17:55:58,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-23 17:55:58,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-23 17:55:58,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-23 17:55:58,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-23 17:55:58,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-23 17:55:58,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-23 17:55:58,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-10-23 17:55:58,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-23 17:55:58,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2020-10-23 17:55:58,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-23 17:55:58,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
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[2020-10-23 17:55:58,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
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[2020-10-23 17:55:58,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2020-10-23 17:55:58,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-10-23 17:55:58,474 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 17:55:58,530 INFO L113 SettingsManager]: Loading preferences was successful
[2020-10-23 17:55:58,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-23 17:55:58,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-23 17:55:58,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-10-23 17:55:58,535 INFO L138 SettingsManager]: * Use SBE=true
[2020-10-23 17:55:58,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-23 17:55:58,535 INFO L138 SettingsManager]: * sizeof long=4
[2020-10-23 17:55:58,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-10-23 17:55:58,536 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-10-23 17:55:58,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-10-23 17:55:58,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-10-23 17:55:58,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-23 17:55:58,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-10-23 17:55:58,538 INFO L138 SettingsManager]: * sizeof long double=12
[2020-10-23 17:55:58,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-10-23 17:55:58,538 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-10-23 17:55:58,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-10-23 17:55:58,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-23 17:55:58,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-10-23 17:55:58,539 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-10-23 17:55:58,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-10-23 17:55:58,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-23 17:55:58,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-23 17:55:58,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-10-23 17:55:58,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-23 17:55:58,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-10-23 17:55:58,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-23 17:55:58,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-23 17:55:58,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-10-23 17:55:58,542 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2020-10-23 17:55:58,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-23 17:55:59,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-23 17:55:59,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-23 17:55:59,016 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-10-23 17:55:59,017 INFO L275 PluginConnector]: CDTParser initialized
[2020-10-23 17:55:59,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1072c.c
[2020-10-23 17:55:59,093 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23a2922f4/16e43e7ff77045b98ccb6d7434f75588/FLAG3908ce900
[2020-10-23 17:55:59,714 INFO L306 CDTParser]: Found 1 translation units.
[2020-10-23 17:55:59,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1072c.c
[2020-10-23 17:55:59,722 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23a2922f4/16e43e7ff77045b98ccb6d7434f75588/FLAG3908ce900
[2020-10-23 17:56:00,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23a2922f4/16e43e7ff77045b98ccb6d7434f75588
[2020-10-23 17:56:00,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-23 17:56:00,095 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-23 17:56:00,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-23 17:56:00,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-23 17:56:00,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-23 17:56:00,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:56:00" (1/1) ...
[2020-10-23 17:56:00,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5922b6f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:00, skipping insertion in model container
[2020-10-23 17:56:00,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:56:00" (1/1) ...
[2020-10-23 17:56:00,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-10-23 17:56:00,132 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-10-23 17:56:00,409 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-10-23 17:56:00,421 INFO L203 MainTranslator]: Completed pre-run
[2020-10-23 17:56:00,475 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-10-23 17:56:00,499 INFO L208 MainTranslator]: Completed translation
[2020-10-23 17:56:00,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:00 WrapperNode
[2020-10-23 17:56:00,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-23 17:56:00,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-23 17:56:00,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-23 17:56:00,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-10-23 17:56:00,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:00" (1/1) ...
[2020-10-23 17:56:00,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:00" (1/1) ...
[2020-10-23 17:56:00,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:00" (1/1) ...
[2020-10-23 17:56:00,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:00" (1/1) ...
[2020-10-23 17:56:00,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:00" (1/1) ...
[2020-10-23 17:56:00,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:00" (1/1) ...
[2020-10-23 17:56:00,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:00" (1/1) ...
[2020-10-23 17:56:00,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-23 17:56:00,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-23 17:56:00,595 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-10-23 17:56:00,595 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-10-23 17:56:00,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:00" (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 17:56:00,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-23 17:56:00,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-23 17:56:00,676 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-23 17:56:00,676 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_float
[2020-10-23 17:56:00,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float
[2020-10-23 17:56:00,676 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-10-23 17:56:00,677 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-10-23 17:56:00,677 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-23 17:56:00,677 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-23 17:56:00,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-23 17:56:00,677 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_float
[2020-10-23 17:56:00,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2020-10-23 17:56:00,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-10-23 17:56:00,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-23 17:56:00,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-10-23 17:56:00,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2020-10-23 17:56:00,679 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float
[2020-10-23 17:56:00,679 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-10-23 17:56:00,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-23 17:56:00,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-23 17:56:00,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-23 17:56:01,102 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-23 17:56:01,102 INFO L298 CfgBuilder]: Removed 8 assume(true) statements.
[2020-10-23 17:56:01,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:56:01 BoogieIcfgContainer
[2020-10-23 17:56:01,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-23 17:56:01,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-23 17:56:01,106 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-10-23 17:56:01,109 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-10-23 17:56:01,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:56:00" (1/3) ...
[2020-10-23 17:56:01,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2318c2c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:56:01, skipping insertion in model container
[2020-10-23 17:56:01,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:00" (2/3) ...
[2020-10-23 17:56:01,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2318c2c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:56:01, skipping insertion in model container
[2020-10-23 17:56:01,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:56:01" (3/3) ...
[2020-10-23 17:56:01,112 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1072c.c
[2020-10-23 17:56:01,124 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2020-10-23 17:56:01,128 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-23 17:56:01,143 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-23 17:56:01,171 INFO L377 AbstractCegarLoop]: Interprodecural is true
[2020-10-23 17:56:01,171 INFO L378 AbstractCegarLoop]: Hoare is true
[2020-10-23 17:56:01,171 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP
[2020-10-23 17:56:01,171 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-23 17:56:01,172 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-23 17:56:01,172 INFO L382 AbstractCegarLoop]: Difference is false
[2020-10-23 17:56:01,172 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-23 17:56:01,172 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-23 17:56:01,189 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states.
[2020-10-23 17:56:01,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2020-10-23 17:56:01,195 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-23 17:56:01,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-23 17:56:01,196 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 17:56:01,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 17:56:01,203 INFO L82 PathProgramCache]: Analyzing trace with hash 302991289, now seen corresponding path program 1 times
[2020-10-23 17:56:01,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-23 17:56:01,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517962938]
[2020-10-23 17:56:01,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 17:56:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 17:56:01,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 17:56:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 17:56:01,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-23 17:56:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 17:56:01,507 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 17:56:01,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517962938]
[2020-10-23 17:56:01,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-23 17:56:01,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-23 17:56:01,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453352580]
[2020-10-23 17:56:01,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-23 17:56:01,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-23 17:56:01,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-23 17:56:01,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-23 17:56:01,532 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states.
[2020-10-23 17:56:01,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 17:56:01,781 INFO L93 Difference]: Finished difference Result 73 states and 99 transitions.
[2020-10-23 17:56:01,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-10-23 17:56:01,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19
[2020-10-23 17:56:01,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 17:56:01,790 INFO L225 Difference]: With dead ends: 73
[2020-10-23 17:56:01,791 INFO L226 Difference]: Without dead ends: 35
[2020-10-23 17:56:01,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 17:56:01,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2020-10-23 17:56:01,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35.
[2020-10-23 17:56:01,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states.
[2020-10-23 17:56:01,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions.
[2020-10-23 17:56:01,837 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 19
[2020-10-23 17:56:01,837 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-23 17:56:01,838 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions.
[2020-10-23 17:56:01,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-23 17:56:01,838 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions.
[2020-10-23 17:56:01,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-10-23 17:56:01,839 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-23 17:56:01,839 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]
[2020-10-23 17:56:01,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-23 17:56:01,840 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 17:56:01,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 17:56:01,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1556212228, now seen corresponding path program 1 times
[2020-10-23 17:56:01,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-23 17:56:01,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229363180]
[2020-10-23 17:56:01,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 17:56:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-23 17:56:01,936 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-10-23 17:56:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-23 17:56:02,013 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-10-23 17:56:02,042 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2020-10-23 17:56:02,043 INFO L523 BasicCegarLoop]: Counterexample might be feasible
[2020-10-23 17:56:02,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-23 17:56:02,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:56:02 BoogieIcfgContainer
[2020-10-23 17:56:02,075 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-10-23 17:56:02,078 INFO L168 Benchmark]: Toolchain (without parser) took 1986.73 ms. Allocated memory is still 156.2 MB. Free memory was 132.5 MB in the beginning and 122.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 11.1 MB. Max. memory is 8.0 GB.
[2020-10-23 17:56:02,079 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory was 106.8 MB in the beginning and 106.7 MB in the end (delta: 71.6 kB). There was no memory consumed. Max. memory is 8.0 GB.
[2020-10-23 17:56:02,080 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.08 ms. Allocated memory is still 156.2 MB. Free memory was 131.8 MB in the beginning and 121.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
[2020-10-23 17:56:02,081 INFO L168 Benchmark]: Boogie Preprocessor took 90.99 ms. Allocated memory is still 156.2 MB. Free memory was 121.7 MB in the beginning and 119.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2020-10-23 17:56:02,082 INFO L168 Benchmark]: RCFGBuilder took 509.45 ms. Allocated memory is still 156.2 MB. Free memory was 119.8 MB in the beginning and 130.3 MB in the end (delta: -10.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 8.0 GB.
[2020-10-23 17:56:02,083 INFO L168 Benchmark]: TraceAbstraction took 969.94 ms. Allocated memory is still 156.2 MB. Free memory was 129.9 MB in the beginning and 122.1 MB in the end (delta: 7.8 MB). Peak memory consumption was 7.4 MB. Max. memory is 8.0 GB.
[2020-10-23 17:56:02,087 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory was 106.8 MB in the beginning and 106.7 MB in the end (delta: 71.6 kB). There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 405.08 ms. Allocated memory is still 156.2 MB. Free memory was 131.8 MB in the beginning and 121.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 90.99 ms. Allocated memory is still 156.2 MB. Free memory was 121.7 MB in the beginning and 119.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 509.45 ms. Allocated memory is still 156.2 MB. Free memory was 119.8 MB in the beginning and 130.3 MB in the end (delta: -10.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 969.94 ms. Allocated memory is still 156.2 MB. Free memory was 129.9 MB in the beginning and 122.1 MB in the end (delta: 7.8 MB). Peak memory consumption was 7.4 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of someBinaryFLOATComparisonOperation at line 68, overapproximation of bitwiseAnd at line 21, overapproximation of someBinaryArithmeticFLOAToperation at line 40.
Possible FailurePath:
[L64] float x = 0.0f;
VAL [x=0]
[L65] CALL, EXPR trunc_float(x)
VAL [\old(x)=0]
[L15] __int32_t signbit, w, exponent_less_127;
VAL [\old(x)=0, x=0]
[L17] ieee_float_shape_type gf_u;
[L18] gf_u.value = (x)
[L19] EXPR gf_u.word
[L19] (w) = gf_u.word
[L21] signbit = w & 0x80000000
[L22] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127
VAL [\old(x)=0, exponent_less_127=255, signbit=-1, w=0, x=0]
[L23] COND FALSE !(exponent_less_127 < 23)
VAL [\old(x)=0, exponent_less_127=255, signbit=-1, w=0, x=0]
[L39] COND TRUE exponent_less_127 == 255
[L40] return x + x;
VAL [\old(x)=0, exponent_less_127=255, signbit=-1, w=0, x=0]
[L65] RET, EXPR trunc_float(x)
VAL [trunc_float(x)=4294967300, x=0]
[L65] float res = trunc_float(x);
[L68] EXPR res == 0.0f && __signbit_float(res) == 0
VAL [res=4294967300, res == 0.0f && __signbit_float(res) == 0=0, x=0]
[L68] COND TRUE !(res == 0.0f && __signbit_float(res) == 0)
[L69] CALL reach_error()
[L4] __assert_fail("0", "float_req_bl_1072c.c", 4, "reach_error")
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 8 SDslu, 31 SDs, 0 SdLazy, 38 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1080 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...