/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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_1032c.c
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This is Ultimate 0.1.25-3af5e1f
[2020-09-04 12:59:14,192 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-04 12:59:14,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-04 12:59:14,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-04 12:59:14,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-04 12:59:14,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-04 12:59:14,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-04 12:59:14,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-04 12:59:14,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-04 12:59:14,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-09-04 12:59:14,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-04 12:59:14,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-04 12:59:14,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-04 12:59:14,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-04 12:59:14,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-04 12:59:14,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-04 12:59:14,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-04 12:59:14,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-04 12:59:14,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-04 12:59:14,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-04 12:59:14,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-04 12:59:14,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-04 12:59:14,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2020-09-04 12:59:14,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2020-09-04 12:59:14,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-04 12:59:14,304 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-09-04 12:59:14,355 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-04 12:59:14,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-04 12:59:14,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-04 12:59:14,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-04 12:59:14,357 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-04 12:59:14,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-04 12:59:14,358 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-04 12:59:14,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-04 12:59:14,358 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-04 12:59:14,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-04 12:59:14,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-04 12:59:14,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-04 12:59:14,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-04 12:59:14,360 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-04 12:59:14,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-04 12:59:14,361 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-04 12:59:14,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-04 12:59:14,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-04 12:59:14,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-04 12:59:14,362 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-04 12:59:14,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-04 12:59:14,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-04 12:59:14,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-04 12:59:14,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-04 12:59:14,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-04 12:59:14,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-04 12:59:14,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-04 12:59:14,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-04 12:59:14,363 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-04 12:59:14,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2020-09-04 12:59:14,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-04 12:59:14,786 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-04 12:59:14,790 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-04 12:59:14,792 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-04 12:59:14,792 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-04 12:59:14,793 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1032c.c
[2020-09-04 12:59:14,875 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f379652d4/7bc20b9dd5724e38a6bb41b1dbcb97d0/FLAGaea676f1f
[2020-09-04 12:59:15,375 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-04 12:59:15,376 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1032c.c
[2020-09-04 12:59:15,385 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f379652d4/7bc20b9dd5724e38a6bb41b1dbcb97d0/FLAGaea676f1f
[2020-09-04 12:59:15,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f379652d4/7bc20b9dd5724e38a6bb41b1dbcb97d0
[2020-09-04 12:59:15,756 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-04 12:59:15,759 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-04 12:59:15,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-04 12:59:15,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-04 12:59:15,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-04 12:59:15,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 12:59:15" (1/1) ...
[2020-09-04 12:59:15,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@224796be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:15, skipping insertion in model container
[2020-09-04 12:59:15,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 12:59:15" (1/1) ...
[2020-09-04 12:59:15,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-04 12:59:15,811 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-04 12:59:16,027 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-04 12:59:16,032 INFO L203 MainTranslator]: Completed pre-run
[2020-09-04 12:59:16,065 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-04 12:59:16,092 INFO L208 MainTranslator]: Completed translation
[2020-09-04 12:59:16,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:16 WrapperNode
[2020-09-04 12:59:16,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-04 12:59:16,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-04 12:59:16,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-04 12:59:16,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-04 12:59:16,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:16" (1/1) ...
[2020-09-04 12:59:16,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:16" (1/1) ...
[2020-09-04 12:59:16,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:16" (1/1) ...
[2020-09-04 12:59:16,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:16" (1/1) ...
[2020-09-04 12:59:16,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:16" (1/1) ...
[2020-09-04 12:59:16,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:16" (1/1) ...
[2020-09-04 12:59:16,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:16" (1/1) ...
[2020-09-04 12:59:16,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-04 12:59:16,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-04 12:59:16,223 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-04 12:59:16,223 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-04 12:59:16,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:16" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/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
[2020-09-04 12:59:16,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-04 12:59:16,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-04 12:59:16,298 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float
[2020-09-04 12:59:16,298 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float
[2020-09-04 12:59:16,298 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-04 12:59:16,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-04 12:59:16,298 INFO L130 BoogieDeclarations]: Found specification of procedure round_float
[2020-09-04 12:59:16,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-04 12:59:16,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2020-09-04 12:59:16,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-04 12:59:16,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-04 12:59:16,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-04 12:59:16,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2020-09-04 12:59:16,300 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float
[2020-09-04 12:59:16,300 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-04 12:59:16,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-04 12:59:16,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-04 12:59:16,637 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-04 12:59:16,637 INFO L295 CfgBuilder]: Removed 6 assume(true) statements.
[2020-09-04 12:59:16,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 12:59:16 BoogieIcfgContainer
[2020-09-04 12:59:16,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-04 12:59:16,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-04 12:59:16,644 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-04 12:59:16,648 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-04 12:59:16,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 12:59:15" (1/3) ...
[2020-09-04 12:59:16,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b316e7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 12:59:16, skipping insertion in model container
[2020-09-04 12:59:16,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:16" (2/3) ...
[2020-09-04 12:59:16,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b316e7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 12:59:16, skipping insertion in model container
[2020-09-04 12:59:16,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 12:59:16" (3/3) ...
[2020-09-04 12:59:16,652 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032c.c
[2020-09-04 12:59:16,663 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2020-09-04 12:59:16,672 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-04 12:59:16,699 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-04 12:59:16,725 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-04 12:59:16,725 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-04 12:59:16,725 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP
[2020-09-04 12:59:16,725 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-04 12:59:16,726 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-04 12:59:16,726 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-04 12:59:16,726 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-04 12:59:16,726 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-04 12:59:16,746 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states.
[2020-09-04 12:59:16,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-09-04 12:59:16,752 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-04 12:59:16,753 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]
[2020-09-04 12:59:16,753 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-04 12:59:16,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-04 12:59:16,760 INFO L82 PathProgramCache]: Analyzing trace with hash 636729620, now seen corresponding path program 1 times
[2020-09-04 12:59:16,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-09-04 12:59:16,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895866811]
[2020-09-04 12:59:16,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-04 12:59:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 12:59:16,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-04 12:59:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 12:59:16,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-04 12:59:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 12:59:16,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-09-04 12:59:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 12:59:17,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-04 12:59:17,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895866811]
[2020-09-04 12:59:17,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-04 12:59:17,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-04 12:59:17,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892651141]
[2020-09-04 12:59:17,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-04 12:59:17,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-09-04 12:59:17,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-04 12:59:17,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-04 12:59:17,037 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 4 states.
[2020-09-04 12:59:17,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-04 12:59:17,214 INFO L93 Difference]: Finished difference Result 66 states and 89 transitions.
[2020-09-04 12:59:17,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2020-09-04 12:59:17,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24
[2020-09-04 12:59:17,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-04 12:59:17,229 INFO L225 Difference]: With dead ends: 66
[2020-09-04 12:59:17,229 INFO L226 Difference]: Without dead ends: 33
[2020-09-04 12:59:17,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-09-04 12:59:17,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2020-09-04 12:59:17,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33.
[2020-09-04 12:59:17,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states.
[2020-09-04 12:59:17,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions.
[2020-09-04 12:59:17,287 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 24
[2020-09-04 12:59:17,288 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-04 12:59:17,288 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions.
[2020-09-04 12:59:17,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-04 12:59:17,288 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions.
[2020-09-04 12:59:17,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-09-04 12:59:17,289 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-04 12:59:17,290 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]
[2020-09-04 12:59:17,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-04 12:59:17,291 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-04 12:59:17,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-04 12:59:17,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1180797057, now seen corresponding path program 1 times
[2020-09-04 12:59:17,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-09-04 12:59:17,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663481031]
[2020-09-04 12:59:17,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-04 12:59:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-04 12:59:17,391 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-09-04 12:59:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-04 12:59:17,444 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-09-04 12:59:17,475 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2020-09-04 12:59:17,475 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-04 12:59:17,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-04 12:59:17,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 12:59:17 BoogieIcfgContainer
[2020-09-04 12:59:17,509 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-04 12:59:17,513 INFO L168 Benchmark]: Toolchain (without parser) took 1752.91 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 104.8 MB in the beginning and 117.0 MB in the end (delta: -12.2 MB). Peak memory consumption was 50.7 MB. Max. memory is 7.1 GB.
[2020-09-04 12:59:17,514 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-04 12:59:17,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.04 ms. Allocated memory is still 142.1 MB. Free memory was 104.6 MB in the beginning and 93.6 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB.
[2020-09-04 12:59:17,516 INFO L168 Benchmark]: Boogie Preprocessor took 128.45 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 93.6 MB in the beginning and 182.5 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB.
[2020-09-04 12:59:17,517 INFO L168 Benchmark]: RCFGBuilder took 419.91 ms. Allocated memory is still 205.0 MB. Free memory was 182.5 MB in the beginning and 163.8 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB.
[2020-09-04 12:59:17,518 INFO L168 Benchmark]: TraceAbstraction took 864.96 ms. Allocated memory is still 205.0 MB. Free memory was 163.1 MB in the beginning and 117.0 MB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 7.1 GB.
[2020-09-04 12:59:17,522 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.20 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 331.04 ms. Allocated memory is still 142.1 MB. Free memory was 104.6 MB in the beginning and 93.6 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 128.45 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 93.6 MB in the beginning and 182.5 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 419.91 ms. Allocated memory is still 205.0 MB. Free memory was 182.5 MB in the beginning and 163.8 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 864.96 ms. Allocated memory is still 205.0 MB. Free memory was 163.1 MB in the beginning and 117.0 MB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 42, overapproximation of bitwiseAnd at line 62.
Possible FailurePath:
[L74] float x = 1.0f / 0.0f;
[L75] CALL, EXPR round_float(x)
VAL [\old(x)=4294967300]
[L12] __uint32_t w;
[L14] int exponent_less_127;
VAL [\old(x)=4294967300, x=4294967300]
[L17] ieee_float_shape_type gf_u;
[L18] gf_u.value = (x)
[L19] EXPR gf_u.word
[L19] (w) = gf_u.word
[L22] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127
VAL [\old(x)=4294967300, exponent_less_127=128, w=7, x=4294967300]
[L24] COND FALSE !(exponent_less_127 < 23)
VAL [\old(x)=4294967300, exponent_less_127=128, w=7, x=4294967300]
[L40] COND TRUE exponent_less_127 == 128
[L42] return x + x;
VAL [\old(x)=4294967300, exponent_less_127=128, w=7, x=4294967300]
[L75] RET, EXPR round_float(x)
VAL [round_float(x)=4294967297, x=4294967300]
[L75] float res = round_float(x);
[L78] CALL, EXPR isinf_float(res)
VAL [\old(x)=4294967297]
[L56] __int32_t ix;
VAL [\old(x)=4294967297, x=4294967297]
[L58] ieee_float_shape_type gf_u;
[L59] gf_u.value = (x)
[L60] EXPR gf_u.word
[L60] (ix) = gf_u.word
[L62] ix &= 0x7fffffff
[L63] return ((ix) == 0x7f800000L);
VAL [\old(x)=4294967297, \result=0, ix=0, x=4294967297]
[L78] RET, EXPR isinf_float(res)
VAL [isinf_float(res)=0, res=4294967297, x=4294967300]
[L78] COND TRUE !isinf_float(res)
[L79] __VERIFIER_error()
VAL [res=4294967297, x=4294967300]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 30 SDslu, 5 SDs, 0 SdLazy, 40 SolverSat, 11 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1288 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...