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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/array-tiling/mbpr4.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 21:38:48,085 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2019-10-13 21:38:48,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-13 21:38:48,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-13 21:38:48,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-13 21:38:48,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-13 21:38:48,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-10-13 21:38:48,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2019-10-13 21:38:48,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-10-13 21:38:48,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-10-13 21:38:48,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2019-10-13 21:38:48,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-10-13 21:38:48,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-10-13 21:38:48,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-10-13 21:38:48,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-10-13 21:38:48,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-13 21:38:48,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-13 21:38:48,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-13 21:38:48,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-13 21:38:48,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-13 21:38:48,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-13 21:38:48,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-13 21:38:48,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2019-10-13 21:38:48,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-13 21:38:48,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-10-13 21:38:48,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-10-13 21:38:48,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-10-13 21:38:48,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-10-13 21:38:48,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-10-13 21:38:48,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-10-13 21:38:48,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-10-13 21:38:48,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-10-13 21:38:48,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-10-13 21:38:48,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2019-10-13 21:38:48,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-10-13 21:38:48,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2019-10-13 21:38:48,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-10-13 21:38:48,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-10-13 21:38:48,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2019-10-13 21:38:48,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2019-10-13 21:38:48,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2019-10-13 21:38:48,166 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 21:38:48,194 INFO L113 SettingsManager]: Loading preferences was successful
[2019-10-13 21:38:48,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 21:38:48,196 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 21:38:48,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2019-10-13 21:38:48,197 INFO L138 SettingsManager]: * Use SBE=true
[2019-10-13 21:38:48,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 21:38:48,197 INFO L138 SettingsManager]: * sizeof long=4
[2019-10-13 21:38:48,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2019-10-13 21:38:48,198 INFO L138 SettingsManager]: * sizeof POINTER=4
[2019-10-13 21:38:48,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2019-10-13 21:38:48,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 21:38:48,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 21:38:48,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 21:38:48,200 INFO L138 SettingsManager]: * sizeof long double=12
[2019-10-13 21:38:48,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2019-10-13 21:38:48,200 INFO L138 SettingsManager]: * Use constant arrays=true
[2019-10-13 21:38:48,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2019-10-13 21:38:48,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 21:38:48,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2019-10-13 21:38:48,201 INFO L138 SettingsManager]: * To the following directory=./dump/
[2019-10-13 21:38:48,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2019-10-13 21:38:48,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 21:38:48,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 21:38:48,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 21:38:48,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 21:38:48,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2019-10-13 21:38:48,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 21:38:48,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 21:38:48,203 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK
[2019-10-13 21:38:48,494 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 21:38:48,513 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 21:38:48,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 21:38:48,518 INFO L271 PluginConnector]: Initializing CDTParser...
[2019-10-13 21:38:48,519 INFO L275 PluginConnector]: CDTParser initialized
[2019-10-13 21:38:48,520 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mbpr4.c
[2019-10-13 21:38:48,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7716a8f3d/598ffefa4689435d9687225f7f22471f/FLAG9a6cbe286
[2019-10-13 21:38:49,060 INFO L306 CDTParser]: Found 1 translation units.
[2019-10-13 21:38:49,061 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mbpr4.c
[2019-10-13 21:38:49,067 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7716a8f3d/598ffefa4689435d9687225f7f22471f/FLAG9a6cbe286
[2019-10-13 21:38:49,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7716a8f3d/598ffefa4689435d9687225f7f22471f
[2019-10-13 21:38:49,482 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 21:38:49,484 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 21:38:49,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 21:38:49,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 21:38:49,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 21:38:49,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:38:49" (1/1) ...
[2019-10-13 21:38:49,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32b073ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:49, skipping insertion in model container
[2019-10-13 21:38:49,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:38:49" (1/1) ...
[2019-10-13 21:38:49,501 INFO L142 MainTranslator]: Starting translation in SV-COMP mode
[2019-10-13 21:38:49,521 INFO L173 MainTranslator]: Built tables and reachable declarations
[2019-10-13 21:38:49,742 INFO L206 PostProcessor]: Analyzing one entry point: main
[2019-10-13 21:38:49,747 INFO L188 MainTranslator]: Completed pre-run
[2019-10-13 21:38:49,893 INFO L206 PostProcessor]: Analyzing one entry point: main
[2019-10-13 21:38:49,910 INFO L192 MainTranslator]: Completed translation
[2019-10-13 21:38:49,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:49 WrapperNode
[2019-10-13 21:38:49,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 21:38:49,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 21:38:49,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 21:38:49,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 21:38:49,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:49" (1/1) ...
[2019-10-13 21:38:49,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:49" (1/1) ...
[2019-10-13 21:38:49,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:49" (1/1) ...
[2019-10-13 21:38:49,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:49" (1/1) ...
[2019-10-13 21:38:49,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:49" (1/1) ...
[2019-10-13 21:38:49,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:49" (1/1) ...
[2019-10-13 21:38:49,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:49" (1/1) ...
[2019-10-13 21:38:49,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 21:38:49,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 21:38:49,977 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 21:38:49,978 INFO L275 PluginConnector]: RCFGBuilder initialized
[2019-10-13 21:38:49,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:49" (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 21:38:50,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 21:38:50,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 21:38:50,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2019-10-13 21:38:50,049 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 21:38:50,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 21:38:50,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume
[2019-10-13 21:38:50,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2019-10-13 21:38:50,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-13 21:38:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2019-10-13 21:38:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2019-10-13 21:38:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2019-10-13 21:38:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2019-10-13 21:38:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2019-10-13 21:38:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 21:38:50,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 21:38:50,652 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 21:38:50,652 INFO L284 CfgBuilder]: Removed 5 assume(true) statements.
[2019-10-13 21:38:50,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:38:50 BoogieIcfgContainer
[2019-10-13 21:38:50,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 21:38:50,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 21:38:50,655 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 21:38:50,658 INFO L275 PluginConnector]: TraceAbstraction initialized
[2019-10-13 21:38:50,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:38:49" (1/3) ...
[2019-10-13 21:38:50,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d1b528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:38:50, skipping insertion in model container
[2019-10-13 21:38:50,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:49" (2/3) ...
[2019-10-13 21:38:50,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d1b528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:38:50, skipping insertion in model container
[2019-10-13 21:38:50,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:38:50" (3/3) ...
[2019-10-13 21:38:50,662 INFO L109 eAbstractionObserver]: Analyzing ICFG mbpr4.c
[2019-10-13 21:38:50,671 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 21:38:50,680 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 21:38:50,691 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 21:38:50,715 INFO L373 AbstractCegarLoop]: Interprodecural is true
[2019-10-13 21:38:50,716 INFO L374 AbstractCegarLoop]: Hoare is true
[2019-10-13 21:38:50,716 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 21:38:50,716 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 21:38:50,716 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 21:38:50,717 INFO L378 AbstractCegarLoop]: Difference is false
[2019-10-13 21:38:50,717 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 21:38:50,717 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 21:38:50,734 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states.
[2019-10-13 21:38:50,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2019-10-13 21:38:50,739 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 21:38:50,740 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 21:38:50,742 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 21:38:50,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 21:38:50,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1985347759, now seen corresponding path program 1 times
[2019-10-13 21:38:50,755 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 21:38:50,755 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719308492]
[2019-10-13 21:38:50,755 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:38:50,756 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:38:50,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 21:38:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 21:38:51,177 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 21:38:51,181 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719308492]
[2019-10-13 21:38:51,182 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 21:38:51,183 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-13 21:38:51,184 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7830527]
[2019-10-13 21:38:51,190 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 21:38:51,190 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 21:38:51,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 21:38:51,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2019-10-13 21:38:51,214 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states.
[2019-10-13 21:38:51,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 21:38:51,371 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions.
[2019-10-13 21:38:51,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2019-10-13 21:38:51,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16
[2019-10-13 21:38:51,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 21:38:51,382 INFO L225 Difference]: With dead ends: 55
[2019-10-13 21:38:51,382 INFO L226 Difference]: Without dead ends: 24
[2019-10-13 21:38:51,388 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2019-10-13 21:38:51,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2019-10-13 21:38:51,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24.
[2019-10-13 21:38:51,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2019-10-13 21:38:51,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions.
[2019-10-13 21:38:51,449 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16
[2019-10-13 21:38:51,451 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-13 21:38:51,451 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions.
[2019-10-13 21:38:51,451 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 21:38:51,451 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions.
[2019-10-13 21:38:51,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2019-10-13 21:38:51,453 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 21:38:51,453 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 21:38:51,454 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 21:38:51,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 21:38:51,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1386947649, now seen corresponding path program 1 times
[2019-10-13 21:38:51,455 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 21:38:51,456 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674115311]
[2019-10-13 21:38:51,456 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:38:51,456 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:38:51,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 21:38:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 21:38:52,660 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 21:38:52,660 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674115311]
[2019-10-13 21:38:52,660 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50291514]
[2019-10-13 21:38:52,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 21:38:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 21:38:52,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 35 conjunts are in the unsatisfiable core
[2019-10-13 21:38:52,738 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 21:38:52,867 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-13 21:38:53,104 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 21:38:53,105 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception:
java.lang.AssertionError: java.lang.NullPointerException
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.<init>(TraceAbstractionRefinementEngine.java:85)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:122)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
Caused by: java.lang.NullPointerException
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.MultiDimensionalNestedStore.getInnermost(MultiDimensionalNestedStore.java:121)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277)
at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:139)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:195)
at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115)
at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.<init>(ArrayOccurrenceAnalysis.java:181)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.<init>(ArrayOccurrenceAnalysis.java:83)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.downgradeDimensionsIfNecessary(ArrayOccurrenceAnalysis.java:171)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:132)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.<init>(ArrayIndexBasedCostEstimation.java:64)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.<init>(TraceCheckSpWp.java:162)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299)
... 21 more
[2019-10-13 21:38:53,111 INFO L168 Benchmark]: Toolchain (without parser) took 3625.75 ms. Allocated memory was 143.7 MB in the beginning and 249.0 MB in the end (delta: 105.4 MB). Free memory was 100.7 MB in the beginning and 208.2 MB in the end (delta: -107.5 MB). There was no memory consumed. Max. memory is 7.1 GB.
[2019-10-13 21:38:53,112 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 143.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2019-10-13 21:38:53,113 INFO L168 Benchmark]: CACSL2BoogieTranslator took 426.04 ms. Allocated memory was 143.7 MB in the beginning and 200.3 MB in the end (delta: 56.6 MB). Free memory was 100.5 MB in the beginning and 177.2 MB in the end (delta: -76.7 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB.
[2019-10-13 21:38:53,114 INFO L168 Benchmark]: Boogie Preprocessor took 65.12 ms. Allocated memory is still 200.3 MB. Free memory was 177.2 MB in the beginning and 175.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB.
[2019-10-13 21:38:53,114 INFO L168 Benchmark]: RCFGBuilder took 676.50 ms. Allocated memory is still 200.3 MB. Free memory was 175.2 MB in the beginning and 135.4 MB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 7.1 GB.
[2019-10-13 21:38:53,115 INFO L168 Benchmark]: TraceAbstraction took 2453.06 ms. Allocated memory was 200.3 MB in the beginning and 249.0 MB in the end (delta: 48.8 MB). Free memory was 135.4 MB in the beginning and 208.2 MB in the end (delta: -72.8 MB). There was no memory consumed. Max. memory is 7.1 GB.
[2019-10-13 21:38:53,119 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.21 ms. Allocated memory is still 143.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 426.04 ms. Allocated memory was 143.7 MB in the beginning and 200.3 MB in the end (delta: 56.6 MB). Free memory was 100.5 MB in the beginning and 177.2 MB in the end (delta: -76.7 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 65.12 ms. Allocated memory is still 200.3 MB. Free memory was 177.2 MB in the beginning and 175.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 676.50 ms. Allocated memory is still 200.3 MB. Free memory was 175.2 MB in the beginning and 135.4 MB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 2453.06 ms. Allocated memory was 200.3 MB in the beginning and 249.0 MB in the end (delta: 48.8 MB). Free memory was 135.4 MB in the beginning and 208.2 MB in the end (delta: -72.8 MB). There was no memory consumed. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- ExceptionOrErrorResult: AssertionError: java.lang.NullPointerException
de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.NullPointerException: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307)
RESULT: Ultimate could not prove your program: Toolchain returned no result.
Received shutdown request...