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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/loops/while_infinite_loop_4.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 21:07:26,134 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2019-10-13 21:07:26,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-13 21:07:26,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-13 21:07:26,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-13 21:07:26,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-13 21:07:26,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-10-13 21:07:26,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2019-10-13 21:07:26,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-10-13 21:07:26,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-10-13 21:07:26,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2019-10-13 21:07:26,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-10-13 21:07:26,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-10-13 21:07:26,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-10-13 21:07:26,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-10-13 21:07:26,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-13 21:07:26,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-13 21:07:26,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-13 21:07:26,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-13 21:07:26,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-13 21:07:26,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-13 21:07:26,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-13 21:07:26,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2019-10-13 21:07:26,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-13 21:07:26,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-10-13 21:07:26,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-10-13 21:07:26,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-10-13 21:07:26,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-10-13 21:07:26,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-10-13 21:07:26,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-10-13 21:07:26,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-10-13 21:07:26,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-10-13 21:07:26,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-10-13 21:07:26,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2019-10-13 21:07:26,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-10-13 21:07:26,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2019-10-13 21:07:26,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-10-13 21:07:26,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-10-13 21:07:26,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2019-10-13 21:07:26,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2019-10-13 21:07:26,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2019-10-13 21:07:26,217 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
[2019-10-13 21:07:26,253 INFO L113 SettingsManager]: Loading preferences was successful
[2019-10-13 21:07:26,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 21:07:26,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 21:07:26,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2019-10-13 21:07:26,257 INFO L138 SettingsManager]: * Use SBE=true
[2019-10-13 21:07:26,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 21:07:26,261 INFO L138 SettingsManager]: * sizeof long=4
[2019-10-13 21:07:26,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2019-10-13 21:07:26,261 INFO L138 SettingsManager]: * sizeof POINTER=4
[2019-10-13 21:07:26,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2019-10-13 21:07:26,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 21:07:26,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 21:07:26,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 21:07:26,262 INFO L138 SettingsManager]: * sizeof long double=12
[2019-10-13 21:07:26,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2019-10-13 21:07:26,262 INFO L138 SettingsManager]: * Use constant arrays=true
[2019-10-13 21:07:26,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2019-10-13 21:07:26,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 21:07:26,263 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2019-10-13 21:07:26,265 INFO L138 SettingsManager]: * To the following directory=./dump/
[2019-10-13 21:07:26,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2019-10-13 21:07:26,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 21:07:26,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 21:07:26,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 21:07:26,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 21:07:26,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2019-10-13 21:07:26,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 21:07:26,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 21:07:26,267 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES
[2019-10-13 21:07:26,530 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 21:07:26,545 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 21:07:26,550 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 21:07:26,551 INFO L271 PluginConnector]: Initializing CDTParser...
[2019-10-13 21:07:26,551 INFO L275 PluginConnector]: CDTParser initialized
[2019-10-13 21:07:26,552 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_4.c
[2019-10-13 21:07:26,631 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea8f61fe7/6b3c970d201644a4b8fdbf4f9097f273/FLAG689143624
[2019-10-13 21:07:27,065 INFO L306 CDTParser]: Found 1 translation units.
[2019-10-13 21:07:27,066 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_4.c
[2019-10-13 21:07:27,072 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea8f61fe7/6b3c970d201644a4b8fdbf4f9097f273/FLAG689143624
[2019-10-13 21:07:27,459 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea8f61fe7/6b3c970d201644a4b8fdbf4f9097f273
[2019-10-13 21:07:27,470 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 21:07:27,471 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 21:07:27,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 21:07:27,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 21:07:27,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 21:07:27,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:07:27" (1/1) ...
[2019-10-13 21:07:27,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@209cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:27, skipping insertion in model container
[2019-10-13 21:07:27,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:07:27" (1/1) ...
[2019-10-13 21:07:27,489 INFO L142 MainTranslator]: Starting translation in SV-COMP mode
[2019-10-13 21:07:27,508 INFO L173 MainTranslator]: Built tables and reachable declarations
[2019-10-13 21:07:27,684 INFO L206 PostProcessor]: Analyzing one entry point: main
[2019-10-13 21:07:27,690 INFO L188 MainTranslator]: Completed pre-run
[2019-10-13 21:07:27,703 INFO L206 PostProcessor]: Analyzing one entry point: main
[2019-10-13 21:07:27,717 INFO L192 MainTranslator]: Completed translation
[2019-10-13 21:07:27,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:27 WrapperNode
[2019-10-13 21:07:27,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 21:07:27,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 21:07:27,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 21:07:27,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 21:07:27,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:27" (1/1) ...
[2019-10-13 21:07:27,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:27" (1/1) ...
[2019-10-13 21:07:27,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:27" (1/1) ...
[2019-10-13 21:07:27,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:27" (1/1) ...
[2019-10-13 21:07:27,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:27" (1/1) ...
[2019-10-13 21:07:27,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:27" (1/1) ...
[2019-10-13 21:07:27,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:27" (1/1) ...
[2019-10-13 21:07:27,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 21:07:27,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 21:07:27,833 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 21:07:27,833 INFO L275 PluginConnector]: RCFGBuilder initialized
[2019-10-13 21:07:27,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:27" (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
[2019-10-13 21:07:27,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 21:07:27,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 21:07:27,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2019-10-13 21:07:27,892 INFO L138 BoogieDeclarations]: Found implementation of procedure eval
[2019-10-13 21:07:27,892 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 21:07:27,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 21:07:27,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2019-10-13 21:07:27,893 INFO L130 BoogieDeclarations]: Found specification of procedure eval
[2019-10-13 21:07:27,893 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2019-10-13 21:07:27,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 21:07:27,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 21:07:28,040 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 21:07:28,040 INFO L284 CfgBuilder]: Removed 2 assume(true) statements.
[2019-10-13 21:07:28,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:07:28 BoogieIcfgContainer
[2019-10-13 21:07:28,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 21:07:28,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 21:07:28,043 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 21:07:28,046 INFO L275 PluginConnector]: TraceAbstraction initialized
[2019-10-13 21:07:28,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:07:27" (1/3) ...
[2019-10-13 21:07:28,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66077692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:07:28, skipping insertion in model container
[2019-10-13 21:07:28,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:27" (2/3) ...
[2019-10-13 21:07:28,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66077692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:07:28, skipping insertion in model container
[2019-10-13 21:07:28,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:07:28" (3/3) ...
[2019-10-13 21:07:28,050 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_4.c
[2019-10-13 21:07:28,059 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 21:07:28,065 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 21:07:28,076 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 21:07:28,101 INFO L373 AbstractCegarLoop]: Interprodecural is true
[2019-10-13 21:07:28,101 INFO L374 AbstractCegarLoop]: Hoare is true
[2019-10-13 21:07:28,101 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 21:07:28,101 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 21:07:28,101 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 21:07:28,102 INFO L378 AbstractCegarLoop]: Difference is false
[2019-10-13 21:07:28,102 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 21:07:28,102 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 21:07:28,120 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states.
[2019-10-13 21:07:28,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2019-10-13 21:07:28,126 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 21:07:28,127 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 21:07:28,129 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 21:07:28,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 21:07:28,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1783967560, now seen corresponding path program 1 times
[2019-10-13 21:07:28,144 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN
[2019-10-13 21:07:28,144 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105927263]
[2019-10-13 21:07:28,145 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:07:28,145 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:07:28,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 21:07:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 21:07:28,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 21:07:28,249 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105927263]
[2019-10-13 21:07:28,250 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 21:07:28,251 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2019-10-13 21:07:28,251 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423407485]
[2019-10-13 21:07:28,255 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states
[2019-10-13 21:07:28,256 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN
[2019-10-13 21:07:28,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2019-10-13 21:07:28,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-10-13 21:07:28,270 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states.
[2019-10-13 21:07:28,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 21:07:28,295 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions.
[2019-10-13 21:07:28,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2019-10-13 21:07:28,296 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10
[2019-10-13 21:07:28,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 21:07:28,304 INFO L225 Difference]: With dead ends: 35
[2019-10-13 21:07:28,305 INFO L226 Difference]: Without dead ends: 17
[2019-10-13 21:07:28,308 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-10-13 21:07:28,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2019-10-13 21:07:28,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17.
[2019-10-13 21:07:28,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states.
[2019-10-13 21:07:28,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions.
[2019-10-13 21:07:28,342 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10
[2019-10-13 21:07:28,342 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-13 21:07:28,342 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions.
[2019-10-13 21:07:28,342 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2019-10-13 21:07:28,343 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions.
[2019-10-13 21:07:28,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2019-10-13 21:07:28,343 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 21:07:28,344 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 21:07:28,344 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 21:07:28,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 21:07:28,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1698359207, now seen corresponding path program 1 times
[2019-10-13 21:07:28,345 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN
[2019-10-13 21:07:28,345 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588903176]
[2019-10-13 21:07:28,345 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:07:28,346 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:07:28,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 21:07:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2019-10-13 21:07:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2019-10-13 21:07:28,392 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace
[2019-10-13 21:07:28,392 INFO L445 BasicCegarLoop]: Counterexample might be feasible
[2019-10-13 21:07:28,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 09:07:28 BoogieIcfgContainer
[2019-10-13 21:07:28,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2019-10-13 21:07:28,416 INFO L168 Benchmark]: Toolchain (without parser) took 944.13 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 101.9 MB in the beginning and 147.0 MB in the end (delta: -45.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB.
[2019-10-13 21:07:28,417 INFO L168 Benchmark]: CDTParser took 1.08 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2019-10-13 21:07:28,418 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.07 ms. Allocated memory is still 137.4 MB. Free memory was 101.7 MB in the beginning and 92.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB.
[2019-10-13 21:07:28,419 INFO L168 Benchmark]: Boogie Preprocessor took 113.72 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 92.6 MB in the beginning and 180.0 MB in the end (delta: -87.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB.
[2019-10-13 21:07:28,420 INFO L168 Benchmark]: RCFGBuilder took 208.68 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 169.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB.
[2019-10-13 21:07:28,421 INFO L168 Benchmark]: TraceAbstraction took 370.80 ms. Allocated memory is still 201.3 MB. Free memory was 169.0 MB in the beginning and 147.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB.
[2019-10-13 21:07:28,426 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 1.08 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 246.07 ms. Allocated memory is still 137.4 MB. Free memory was 101.7 MB in the beginning and 92.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 113.72 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 92.6 MB in the beginning and 180.0 MB in the end (delta: -87.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 208.68 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 169.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 370.80 ms. Allocated memory is still 201.3 MB. Free memory was 169.0 MB in the beginning and 147.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L10] int x=0;
VAL [\old(x)=1, x=0]
[L24] COND TRUE 1
VAL [\old(x)=0, x=0]
[L26] CALL eval()
VAL [\old(x)=0, x=0]
[L14] COND TRUE 1
[L15] x=1
VAL [\old(x)=0, x=1]
[L26] RET eval()
VAL [\old(x)=0, x=1]
[L27] CALL __VERIFIER_assert(x==0)
VAL [\old(cond)=0, \old(x)=0, x=1]
[L4] COND TRUE !(cond)
VAL [\old(cond)=0, \old(x)=0, cond=0, x=1]
[L5] __VERIFIER_error()
VAL [\old(cond)=0, \old(x)=0, cond=0, x=1]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 23 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...