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/eca-rers2012/Problem03_label58.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 21:42:07,307 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2019-10-13 21:42:07,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-13 21:42:07,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-13 21:42:07,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-13 21:42:07,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-13 21:42:07,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-10-13 21:42:07,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2019-10-13 21:42:07,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-10-13 21:42:07,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-10-13 21:42:07,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2019-10-13 21:42:07,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-10-13 21:42:07,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-10-13 21:42:07,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-10-13 21:42:07,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-10-13 21:42:07,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-13 21:42:07,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-13 21:42:07,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-13 21:42:07,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-13 21:42:07,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-13 21:42:07,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-13 21:42:07,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-13 21:42:07,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2019-10-13 21:42:07,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-13 21:42:07,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-10-13 21:42:07,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-10-13 21:42:07,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-10-13 21:42:07,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-10-13 21:42:07,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-10-13 21:42:07,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-10-13 21:42:07,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-10-13 21:42:07,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-10-13 21:42:07,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-10-13 21:42:07,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2019-10-13 21:42:07,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-10-13 21:42:07,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2019-10-13 21:42:07,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-10-13 21:42:07,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-10-13 21:42:07,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2019-10-13 21:42:07,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2019-10-13 21:42:07,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2019-10-13 21:42:07,394 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 21:42:07,423 INFO L113 SettingsManager]: Loading preferences was successful
[2019-10-13 21:42:07,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 21:42:07,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 21:42:07,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2019-10-13 21:42:07,428 INFO L138 SettingsManager]: * Use SBE=true
[2019-10-13 21:42:07,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 21:42:07,429 INFO L138 SettingsManager]: * sizeof long=4
[2019-10-13 21:42:07,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2019-10-13 21:42:07,429 INFO L138 SettingsManager]: * sizeof POINTER=4
[2019-10-13 21:42:07,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2019-10-13 21:42:07,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 21:42:07,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 21:42:07,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 21:42:07,430 INFO L138 SettingsManager]: * sizeof long double=12
[2019-10-13 21:42:07,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2019-10-13 21:42:07,431 INFO L138 SettingsManager]: * Use constant arrays=true
[2019-10-13 21:42:07,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2019-10-13 21:42:07,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 21:42:07,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2019-10-13 21:42:07,432 INFO L138 SettingsManager]: * To the following directory=./dump/
[2019-10-13 21:42:07,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2019-10-13 21:42:07,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 21:42:07,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 21:42:07,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 21:42:07,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 21:42:07,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2019-10-13 21:42:07,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 21:42:07,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 21:42:07,436 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 21:42:07,704 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 21:42:07,717 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 21:42:07,720 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 21:42:07,722 INFO L271 PluginConnector]: Initializing CDTParser...
[2019-10-13 21:42:07,722 INFO L275 PluginConnector]: CDTParser initialized
[2019-10-13 21:42:07,723 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label58.c
[2019-10-13 21:42:07,787 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c776c631/32f4421da76b484cbda6fa8a222d5d67/FLAG4495abdd1
[2019-10-13 21:42:08,424 INFO L306 CDTParser]: Found 1 translation units.
[2019-10-13 21:42:08,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label58.c
[2019-10-13 21:42:08,445 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c776c631/32f4421da76b484cbda6fa8a222d5d67/FLAG4495abdd1
[2019-10-13 21:42:08,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c776c631/32f4421da76b484cbda6fa8a222d5d67
[2019-10-13 21:42:08,585 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 21:42:08,586 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 21:42:08,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 21:42:08,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 21:42:08,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 21:42:08,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:42:08" (1/1) ...
[2019-10-13 21:42:08,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@510c0d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:08, skipping insertion in model container
[2019-10-13 21:42:08,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:42:08" (1/1) ...
[2019-10-13 21:42:08,610 INFO L142 MainTranslator]: Starting translation in SV-COMP mode
[2019-10-13 21:42:08,704 INFO L173 MainTranslator]: Built tables and reachable declarations
[2019-10-13 21:42:09,647 INFO L206 PostProcessor]: Analyzing one entry point: main
[2019-10-13 21:42:09,653 INFO L188 MainTranslator]: Completed pre-run
[2019-10-13 21:42:09,846 INFO L206 PostProcessor]: Analyzing one entry point: main
[2019-10-13 21:42:09,870 INFO L192 MainTranslator]: Completed translation
[2019-10-13 21:42:09,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:09 WrapperNode
[2019-10-13 21:42:09,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 21:42:09,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 21:42:09,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 21:42:09,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 21:42:09,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:09" (1/1) ...
[2019-10-13 21:42:09,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:09" (1/1) ...
[2019-10-13 21:42:09,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:09" (1/1) ...
[2019-10-13 21:42:09,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:09" (1/1) ...
[2019-10-13 21:42:10,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:09" (1/1) ...
[2019-10-13 21:42:10,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:09" (1/1) ...
[2019-10-13 21:42:10,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:09" (1/1) ...
[2019-10-13 21:42:10,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 21:42:10,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 21:42:10,058 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 21:42:10,059 INFO L275 PluginConnector]: RCFGBuilder initialized
[2019-10-13 21:42:10,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:09" (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 21:42:10,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 21:42:10,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 21:42:10,130 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-13 21:42:10,130 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 21:42:10,130 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-13 21:42:10,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 21:42:10,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-13 21:42:10,131 INFO L130 BoogieDeclarations]: Found specification of procedure exit
[2019-10-13 21:42:10,131 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2019-10-13 21:42:10,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 21:42:10,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 21:42:13,346 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 21:42:13,349 INFO L284 CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-13 21:42:13,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:42:13 BoogieIcfgContainer
[2019-10-13 21:42:13,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 21:42:13,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 21:42:13,352 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 21:42:13,356 INFO L275 PluginConnector]: TraceAbstraction initialized
[2019-10-13 21:42:13,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:42:08" (1/3) ...
[2019-10-13 21:42:13,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ab22c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:42:13, skipping insertion in model container
[2019-10-13 21:42:13,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:09" (2/3) ...
[2019-10-13 21:42:13,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ab22c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:42:13, skipping insertion in model container
[2019-10-13 21:42:13,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:42:13" (3/3) ...
[2019-10-13 21:42:13,360 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label58.c
[2019-10-13 21:42:13,370 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 21:42:13,379 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 21:42:13,392 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 21:42:13,424 INFO L373 AbstractCegarLoop]: Interprodecural is true
[2019-10-13 21:42:13,424 INFO L374 AbstractCegarLoop]: Hoare is true
[2019-10-13 21:42:13,424 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 21:42:13,424 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 21:42:13,425 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 21:42:13,425 INFO L378 AbstractCegarLoop]: Difference is false
[2019-10-13 21:42:13,425 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 21:42:13,425 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 21:42:13,451 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states.
[2019-10-13 21:42:13,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150
[2019-10-13 21:42:13,465 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 21:42:13,467 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, 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, 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, 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, 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, 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]
[2019-10-13 21:42:13,469 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 21:42:13,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 21:42:13,475 INFO L82 PathProgramCache]: Analyzing trace with hash 136468006, now seen corresponding path program 1 times
[2019-10-13 21:42:13,485 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 21:42:13,485 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453095112]
[2019-10-13 21:42:13,486 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:42:13,486 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:42:13,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 21:42:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 21:42:14,439 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 21:42:14,440 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453095112]
[2019-10-13 21:42:14,441 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 21:42:14,442 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 21:42:14,443 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882857957]
[2019-10-13 21:42:14,453 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-13 21:42:14,453 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 21:42:14,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-13 21:42:14,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-10-13 21:42:14,477 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 4 states.
[2019-10-13 21:42:16,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 21:42:16,288 INFO L93 Difference]: Finished difference Result 613 states and 1182 transitions.
[2019-10-13 21:42:16,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2019-10-13 21:42:16,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149
[2019-10-13 21:42:16,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 21:42:16,314 INFO L225 Difference]: With dead ends: 613
[2019-10-13 21:42:16,314 INFO L226 Difference]: Without dead ends: 448
[2019-10-13 21:42:16,320 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-10-13 21:42:16,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states.
[2019-10-13 21:42:16,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 301.
[2019-10-13 21:42:16,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states.
[2019-10-13 21:42:16,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 579 transitions.
[2019-10-13 21:42:16,410 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 579 transitions. Word has length 149
[2019-10-13 21:42:16,411 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-13 21:42:16,412 INFO L462 AbstractCegarLoop]: Abstraction has 301 states and 579 transitions.
[2019-10-13 21:42:16,412 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-13 21:42:16,412 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 579 transitions.
[2019-10-13 21:42:16,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166
[2019-10-13 21:42:16,418 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 21:42:16,418 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 21:42:16,419 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 21:42:16,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 21:42:16,419 INFO L82 PathProgramCache]: Analyzing trace with hash -660050486, now seen corresponding path program 1 times
[2019-10-13 21:42:16,419 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 21:42:16,420 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650532587]
[2019-10-13 21:42:16,420 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:42:16,420 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:42:16,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 21:42:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 21:42:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 21:42:16,636 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650532587]
[2019-10-13 21:42:16,637 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 21:42:16,637 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-10-13 21:42:16,637 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498869457]
[2019-10-13 21:42:16,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states
[2019-10-13 21:42:16,641 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 21:42:16,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2019-10-13 21:42:16,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2019-10-13 21:42:16,642 INFO L87 Difference]: Start difference. First operand 301 states and 579 transitions. Second operand 7 states.
[2019-10-13 21:42:18,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 21:42:18,319 INFO L93 Difference]: Finished difference Result 945 states and 1905 transitions.
[2019-10-13 21:42:18,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2019-10-13 21:42:18,319 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165
[2019-10-13 21:42:18,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 21:42:18,330 INFO L225 Difference]: With dead ends: 945
[2019-10-13 21:42:18,330 INFO L226 Difference]: Without dead ends: 649
[2019-10-13 21:42:18,334 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110
[2019-10-13 21:42:18,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states.
[2019-10-13 21:42:18,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 603.
[2019-10-13 21:42:18,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states.
[2019-10-13 21:42:18,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 1154 transitions.
[2019-10-13 21:42:18,439 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 1154 transitions. Word has length 165
[2019-10-13 21:42:18,439 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-13 21:42:18,439 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 1154 transitions.
[2019-10-13 21:42:18,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2019-10-13 21:42:18,440 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 1154 transitions.
[2019-10-13 21:42:18,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167
[2019-10-13 21:42:18,444 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 21:42:18,445 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 21:42:18,445 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 21:42:18,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 21:42:18,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1566262061, now seen corresponding path program 1 times
[2019-10-13 21:42:18,446 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 21:42:18,446 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790717165]
[2019-10-13 21:42:18,446 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:42:18,446 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:42:18,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 21:42:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 21:42:18,577 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 21:42:18,578 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790717165]
[2019-10-13 21:42:18,578 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 21:42:18,579 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2019-10-13 21:42:18,579 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354104874]
[2019-10-13 21:42:18,580 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states
[2019-10-13 21:42:18,580 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 21:42:18,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2019-10-13 21:42:18,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2019-10-13 21:42:18,581 INFO L87 Difference]: Start difference. First operand 603 states and 1154 transitions. Second operand 6 states.
[2019-10-13 21:42:20,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 21:42:20,002 INFO L93 Difference]: Finished difference Result 1859 states and 3754 transitions.
[2019-10-13 21:42:20,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2019-10-13 21:42:20,003 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166
[2019-10-13 21:42:20,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 21:42:20,018 INFO L225 Difference]: With dead ends: 1859
[2019-10-13 21:42:20,018 INFO L226 Difference]: Without dead ends: 1261
[2019-10-13 21:42:20,024 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2019-10-13 21:42:20,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states.
[2019-10-13 21:42:20,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1213.
[2019-10-13 21:42:20,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states.
[2019-10-13 21:42:20,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 2319 transitions.
[2019-10-13 21:42:20,122 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 2319 transitions. Word has length 166
[2019-10-13 21:42:20,122 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-13 21:42:20,122 INFO L462 AbstractCegarLoop]: Abstraction has 1213 states and 2319 transitions.
[2019-10-13 21:42:20,122 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2019-10-13 21:42:20,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 2319 transitions.
[2019-10-13 21:42:20,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175
[2019-10-13 21:42:20,129 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 21:42:20,130 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 21:42:20,130 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 21:42:20,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 21:42:20,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1427323489, now seen corresponding path program 1 times
[2019-10-13 21:42:20,131 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 21:42:20,131 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681105081]
[2019-10-13 21:42:20,131 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:42:20,131 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:42:20,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 21:42:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 21:42:20,344 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2019-10-13 21:42:20,345 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681105081]
[2019-10-13 21:42:20,345 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664499203]
[2019-10-13 21:42:20,346 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 21:42:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 21:42:20,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-10-13 21:42:20,667 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 21:42:20,806 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2019-10-13 21:42:20,806 INFO L321 TraceCheckSpWp]: Computing backward predicates...
[2019-10-13 21:42:20,925 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2019-10-13 21:42:20,926 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences.
[2019-10-13 21:42:20,926 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10
[2019-10-13 21:42:20,926 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179025726]
[2019-10-13 21:42:20,927 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 21:42:20,927 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 21:42:20,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 21:42:20,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2019-10-13 21:42:20,928 INFO L87 Difference]: Start difference. First operand 1213 states and 2319 transitions. Second operand 5 states.
[2019-10-13 21:42:21,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 21:42:21,470 INFO L93 Difference]: Finished difference Result 3697 states and 7337 transitions.
[2019-10-13 21:42:21,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2019-10-13 21:42:21,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174
[2019-10-13 21:42:21,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 21:42:21,494 INFO L225 Difference]: With dead ends: 3697
[2019-10-13 21:42:21,495 INFO L226 Difference]: Without dead ends: 2489
[2019-10-13 21:42:21,500 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 342 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132
[2019-10-13 21:42:21,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states.
[2019-10-13 21:42:21,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 2451.
[2019-10-13 21:42:21,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2451 states.
[2019-10-13 21:42:21,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2451 states to 2451 states and 4764 transitions.
[2019-10-13 21:42:21,630 INFO L78 Accepts]: Start accepts. Automaton has 2451 states and 4764 transitions. Word has length 174
[2019-10-13 21:42:21,631 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-13 21:42:21,631 INFO L462 AbstractCegarLoop]: Abstraction has 2451 states and 4764 transitions.
[2019-10-13 21:42:21,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 21:42:21,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2451 states and 4764 transitions.
[2019-10-13 21:42:21,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178
[2019-10-13 21:42:21,641 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 21:42:21,642 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 21:42:21,849 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 21:42:21,849 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 21:42:21,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 21:42:21,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1874744906, now seen corresponding path program 1 times
[2019-10-13 21:42:21,850 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 21:42:21,850 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431239498]
[2019-10-13 21:42:21,850 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:42:21,850 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:42:21,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 21:42:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 21:42:22,195 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 21:42:22,201 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431239498]
[2019-10-13 21:42:22,202 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244431250]
[2019-10-13 21:42:22,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 21:42:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 21:42:22,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-10-13 21:42:22,484 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 21:42:22,553 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2019-10-13 21:42:22,554 INFO L321 TraceCheckSpWp]: Computing backward predicates...
[2019-10-13 21:42:22,652 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2019-10-13 21:42:22,653 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1249380034]
[2019-10-13 21:42:22,699 INFO L162 IcfgInterpreter]: Started Sifa with 153 locations of interest
[2019-10-13 21:42:22,700 INFO L169 IcfgInterpreter]: Building call graph
[2019-10-13 21:42:22,707 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start]
[2019-10-13 21:42:22,721 INFO L179 IcfgInterpreter]: Starting interpretation
[2019-10-13 21:42:22,723 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs
[2019-10-13 21:42:23,076 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 182
[2019-10-13 21:42:23,593 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 206 for LOIs
[2019-10-13 21:42:23,858 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 298
[2019-10-13 21:42:24,185 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 304
[2019-10-13 21:42:24,425 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 310
[2019-10-13 21:42:25,104 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 21:42:25,107 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception:
java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε
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.IllegalArgumentException: Tried to insert element unknown in custom order: ε
at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97)
at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135)
at java.lang.Iterable.forEach(Iterable.java:75)
at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080)
at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135)
at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104)
at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78)
at java.util.HashMap.computeIfAbsent(HashMap.java:1127)
at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67)
at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230)
at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214)
at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197)
at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166)
at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130)
at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139)
at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.<init>(SifaRunner.java:102)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67)
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 21:42:25,117 INFO L168 Benchmark]: Toolchain (without parser) took 16527.99 ms. Allocated memory was 137.4 MB in the beginning and 502.8 MB in the end (delta: 365.4 MB). Free memory was 95.6 MB in the beginning and 127.7 MB in the end (delta: -32.1 MB). Peak memory consumption was 333.3 MB. Max. memory is 7.1 GB.
[2019-10-13 21:42:25,119 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 137.4 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2019-10-13 21:42:25,120 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1279.62 ms. Allocated memory was 137.4 MB in the beginning and 208.1 MB in the end (delta: 70.8 MB). Free memory was 95.1 MB in the beginning and 133.8 MB in the end (delta: -38.7 MB). Peak memory consumption was 39.4 MB. Max. memory is 7.1 GB.
[2019-10-13 21:42:25,120 INFO L168 Benchmark]: Boogie Preprocessor took 186.23 ms. Allocated memory is still 208.1 MB. Free memory was 133.8 MB in the beginning and 121.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB.
[2019-10-13 21:42:25,121 INFO L168 Benchmark]: RCFGBuilder took 3292.98 ms. Allocated memory was 208.1 MB in the beginning and 265.8 MB in the end (delta: 57.7 MB). Free memory was 121.9 MB in the beginning and 101.7 MB in the end (delta: 20.2 MB). Peak memory consumption was 96.6 MB. Max. memory is 7.1 GB.
[2019-10-13 21:42:25,122 INFO L168 Benchmark]: TraceAbstraction took 11760.31 ms. Allocated memory was 265.8 MB in the beginning and 502.8 MB in the end (delta: 237.0 MB). Free memory was 101.7 MB in the beginning and 127.7 MB in the end (delta: -25.9 MB). Peak memory consumption was 211.0 MB. Max. memory is 7.1 GB.
[2019-10-13 21:42:25,127 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.25 ms. Allocated memory is still 137.4 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 1279.62 ms. Allocated memory was 137.4 MB in the beginning and 208.1 MB in the end (delta: 70.8 MB). Free memory was 95.1 MB in the beginning and 133.8 MB in the end (delta: -38.7 MB). Peak memory consumption was 39.4 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 186.23 ms. Allocated memory is still 208.1 MB. Free memory was 133.8 MB in the beginning and 121.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 3292.98 ms. Allocated memory was 208.1 MB in the beginning and 265.8 MB in the end (delta: 57.7 MB). Free memory was 121.9 MB in the beginning and 101.7 MB in the end (delta: 20.2 MB). Peak memory consumption was 96.6 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 11760.31 ms. Allocated memory was 265.8 MB in the beginning and 502.8 MB in the end (delta: 237.0 MB). Free memory was 101.7 MB in the beginning and 127.7 MB in the end (delta: -25.9 MB). Peak memory consumption was 211.0 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε
de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε: 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...