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/Problem01_label53.c
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This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 21:40:43,612 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2019-10-13 21:40:43,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-13 21:40:43,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-13 21:40:43,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-13 21:40:43,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-13 21:40:43,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-10-13 21:40:43,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2019-10-13 21:40:43,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-10-13 21:40:43,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-10-13 21:40:43,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2019-10-13 21:40:43,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-10-13 21:40:43,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-10-13 21:40:43,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-10-13 21:40:43,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-10-13 21:40:43,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-13 21:40:43,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-13 21:40:43,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-13 21:40:43,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-13 21:40:43,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-13 21:40:43,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-13 21:40:43,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-13 21:40:43,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2019-10-13 21:40:43,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-13 21:40:43,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-10-13 21:40:43,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-10-13 21:40:43,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-10-13 21:40:43,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-10-13 21:40:43,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-10-13 21:40:43,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-10-13 21:40:43,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-10-13 21:40:43,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-10-13 21:40:43,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
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[2019-10-13 21:40:43,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2019-10-13 21:40:43,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2019-10-13 21:40:43,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2019-10-13 21:40:43,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2019-10-13 21:40:43,677 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 21:40:43,698 INFO L113 SettingsManager]: Loading preferences was successful
[2019-10-13 21:40:43,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 21:40:43,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 21:40:43,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2019-10-13 21:40:43,700 INFO L138 SettingsManager]: * Use SBE=true
[2019-10-13 21:40:43,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 21:40:43,701 INFO L138 SettingsManager]: * sizeof long=4
[2019-10-13 21:40:43,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2019-10-13 21:40:43,701 INFO L138 SettingsManager]: * sizeof POINTER=4
[2019-10-13 21:40:43,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2019-10-13 21:40:43,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 21:40:43,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 21:40:43,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 21:40:43,704 INFO L138 SettingsManager]: * sizeof long double=12
[2019-10-13 21:40:43,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2019-10-13 21:40:43,704 INFO L138 SettingsManager]: * Use constant arrays=true
[2019-10-13 21:40:43,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2019-10-13 21:40:43,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 21:40:43,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2019-10-13 21:40:43,705 INFO L138 SettingsManager]: * To the following directory=./dump/
[2019-10-13 21:40:43,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2019-10-13 21:40:43,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 21:40:43,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 21:40:43,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 21:40:43,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 21:40:43,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2019-10-13 21:40:43,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 21:40:43,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 21:40:43,707 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 21:40:44,047 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 21:40:44,064 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 21:40:44,070 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 21:40:44,072 INFO L271 PluginConnector]: Initializing CDTParser...
[2019-10-13 21:40:44,072 INFO L275 PluginConnector]: CDTParser initialized
[2019-10-13 21:40:44,073 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label53.c
[2019-10-13 21:40:44,145 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9b49c459/bc8dc24b858c44a08ea864a7f9fcb6cf/FLAG2ca30152d
[2019-10-13 21:40:44,674 INFO L306 CDTParser]: Found 1 translation units.
[2019-10-13 21:40:44,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label53.c
[2019-10-13 21:40:44,700 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9b49c459/bc8dc24b858c44a08ea864a7f9fcb6cf/FLAG2ca30152d
[2019-10-13 21:40:44,948 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9b49c459/bc8dc24b858c44a08ea864a7f9fcb6cf
[2019-10-13 21:40:44,958 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 21:40:44,959 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 21:40:44,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 21:40:44,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 21:40:44,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 21:40:44,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:40:44" (1/1) ...
[2019-10-13 21:40:44,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d066b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:44, skipping insertion in model container
[2019-10-13 21:40:44,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:40:44" (1/1) ...
[2019-10-13 21:40:44,976 INFO L142 MainTranslator]: Starting translation in SV-COMP mode
[2019-10-13 21:40:45,027 INFO L173 MainTranslator]: Built tables and reachable declarations
[2019-10-13 21:40:45,503 INFO L206 PostProcessor]: Analyzing one entry point: main
[2019-10-13 21:40:45,516 INFO L188 MainTranslator]: Completed pre-run
[2019-10-13 21:40:45,757 INFO L206 PostProcessor]: Analyzing one entry point: main
[2019-10-13 21:40:45,779 INFO L192 MainTranslator]: Completed translation
[2019-10-13 21:40:45,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:45 WrapperNode
[2019-10-13 21:40:45,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 21:40:45,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 21:40:45,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 21:40:45,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 21:40:45,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:45" (1/1) ...
[2019-10-13 21:40:45,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:45" (1/1) ...
[2019-10-13 21:40:45,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:45" (1/1) ...
[2019-10-13 21:40:45,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:45" (1/1) ...
[2019-10-13 21:40:45,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:45" (1/1) ...
[2019-10-13 21:40:45,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:45" (1/1) ...
[2019-10-13 21:40:45,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:45" (1/1) ...
[2019-10-13 21:40:45,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 21:40:45,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 21:40:45,945 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 21:40:45,945 INFO L275 PluginConnector]: RCFGBuilder initialized
[2019-10-13 21:40:45,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:45" (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 21:40:46,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 21:40:46,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 21:40:46,023 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-13 21:40:46,023 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 21:40:46,024 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-13 21:40:46,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 21:40:46,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-13 21:40:46,026 INFO L130 BoogieDeclarations]: Found specification of procedure exit
[2019-10-13 21:40:46,026 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2019-10-13 21:40:46,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 21:40:46,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 21:40:48,156 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 21:40:48,157 INFO L284 CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-13 21:40:48,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:40:48 BoogieIcfgContainer
[2019-10-13 21:40:48,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 21:40:48,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 21:40:48,161 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 21:40:48,165 INFO L275 PluginConnector]: TraceAbstraction initialized
[2019-10-13 21:40:48,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:40:44" (1/3) ...
[2019-10-13 21:40:48,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503dea4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:40:48, skipping insertion in model container
[2019-10-13 21:40:48,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:45" (2/3) ...
[2019-10-13 21:40:48,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503dea4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:40:48, skipping insertion in model container
[2019-10-13 21:40:48,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:40:48" (3/3) ...
[2019-10-13 21:40:48,172 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label53.c
[2019-10-13 21:40:48,187 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 21:40:48,198 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 21:40:48,210 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 21:40:48,245 INFO L373 AbstractCegarLoop]: Interprodecural is true
[2019-10-13 21:40:48,246 INFO L374 AbstractCegarLoop]: Hoare is true
[2019-10-13 21:40:48,246 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 21:40:48,246 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 21:40:48,246 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 21:40:48,246 INFO L378 AbstractCegarLoop]: Difference is false
[2019-10-13 21:40:48,247 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 21:40:48,247 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 21:40:48,315 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states.
[2019-10-13 21:40:48,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78
[2019-10-13 21:40:48,324 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 21:40:48,325 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]
[2019-10-13 21:40:48,327 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 21:40:48,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 21:40:48,336 INFO L82 PathProgramCache]: Analyzing trace with hash 826821988, now seen corresponding path program 1 times
[2019-10-13 21:40:48,346 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 21:40:48,346 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772704]
[2019-10-13 21:40:48,347 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:40:48,347 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:40:48,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 21:40:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 21:40:48,852 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 21:40:48,853 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772704]
[2019-10-13 21:40:48,854 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 21:40:48,854 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-10-13 21:40:48,855 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406288167]
[2019-10-13 21:40:48,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 21:40:48,861 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 21:40:48,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 21:40:48,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-10-13 21:40:48,879 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states.
[2019-10-13 21:40:49,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 21:40:49,414 INFO L93 Difference]: Finished difference Result 246 states and 454 transitions.
[2019-10-13 21:40:49,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2019-10-13 21:40:49,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77
[2019-10-13 21:40:49,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 21:40:49,444 INFO L225 Difference]: With dead ends: 246
[2019-10-13 21:40:49,444 INFO L226 Difference]: Without dead ends: 157
[2019-10-13 21:40:49,450 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-10-13 21:40:49,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states.
[2019-10-13 21:40:49,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157.
[2019-10-13 21:40:49,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states.
[2019-10-13 21:40:49,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 279 transitions.
[2019-10-13 21:40:49,541 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 279 transitions. Word has length 77
[2019-10-13 21:40:49,542 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-13 21:40:49,542 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 279 transitions.
[2019-10-13 21:40:49,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 21:40:49,543 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 279 transitions.
[2019-10-13 21:40:49,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88
[2019-10-13 21:40:49,552 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 21:40:49,553 INFO L380 BasicCegarLoop]: trace histogram [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]
[2019-10-13 21:40:49,553 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 21:40:49,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 21:40:49,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1195664645, now seen corresponding path program 1 times
[2019-10-13 21:40:49,555 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 21:40:49,556 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501218159]
[2019-10-13 21:40:49,556 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:40:49,556 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:40:49,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 21:40:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 21:40:49,707 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 21:40:49,707 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501218159]
[2019-10-13 21:40:49,708 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 21:40:49,708 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2019-10-13 21:40:49,708 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895492565]
[2019-10-13 21:40:49,710 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states
[2019-10-13 21:40:49,710 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 21:40:49,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2019-10-13 21:40:49,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2019-10-13 21:40:49,711 INFO L87 Difference]: Start difference. First operand 157 states and 279 transitions. Second operand 6 states.
[2019-10-13 21:40:50,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 21:40:50,466 INFO L93 Difference]: Finished difference Result 402 states and 725 transitions.
[2019-10-13 21:40:50,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2019-10-13 21:40:50,467 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87
[2019-10-13 21:40:50,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 21:40:50,471 INFO L225 Difference]: With dead ends: 402
[2019-10-13 21:40:50,472 INFO L226 Difference]: Without dead ends: 250
[2019-10-13 21:40:50,474 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 21:40:50,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states.
[2019-10-13 21:40:50,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 238.
[2019-10-13 21:40:50,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states.
[2019-10-13 21:40:50,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 407 transitions.
[2019-10-13 21:40:50,496 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 407 transitions. Word has length 87
[2019-10-13 21:40:50,497 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-13 21:40:50,497 INFO L462 AbstractCegarLoop]: Abstraction has 238 states and 407 transitions.
[2019-10-13 21:40:50,497 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2019-10-13 21:40:50,497 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 407 transitions.
[2019-10-13 21:40:50,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89
[2019-10-13 21:40:50,500 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 21:40:50,501 INFO L380 BasicCegarLoop]: trace histogram [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]
[2019-10-13 21:40:50,501 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 21:40:50,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 21:40:50,501 INFO L82 PathProgramCache]: Analyzing trace with hash -2128686249, now seen corresponding path program 1 times
[2019-10-13 21:40:50,502 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 21:40:50,502 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131236285]
[2019-10-13 21:40:50,502 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:40:50,502 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:40:50,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 21:40:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 21:40:50,635 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 21:40:50,636 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131236285]
[2019-10-13 21:40:50,636 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 21:40:50,636 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 21:40:50,637 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267201971]
[2019-10-13 21:40:50,637 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-13 21:40:50,638 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 21:40:50,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-13 21:40:50,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-10-13 21:40:50,643 INFO L87 Difference]: Start difference. First operand 238 states and 407 transitions. Second operand 4 states.
[2019-10-13 21:40:51,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 21:40:51,412 INFO L93 Difference]: Finished difference Result 852 states and 1533 transitions.
[2019-10-13 21:40:51,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2019-10-13 21:40:51,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88
[2019-10-13 21:40:51,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 21:40:51,426 INFO L225 Difference]: With dead ends: 852
[2019-10-13 21:40:51,427 INFO L226 Difference]: Without dead ends: 619
[2019-10-13 21:40:51,429 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 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 21:40:51,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states.
[2019-10-13 21:40:51,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 544.
[2019-10-13 21:40:51,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states.
[2019-10-13 21:40:51,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 888 transitions.
[2019-10-13 21:40:51,507 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 888 transitions. Word has length 88
[2019-10-13 21:40:51,508 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-13 21:40:51,508 INFO L462 AbstractCegarLoop]: Abstraction has 544 states and 888 transitions.
[2019-10-13 21:40:51,508 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-13 21:40:51,509 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 888 transitions.
[2019-10-13 21:40:51,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95
[2019-10-13 21:40:51,520 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 21:40:51,520 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]
[2019-10-13 21:40:51,521 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 21:40:51,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 21:40:51,521 INFO L82 PathProgramCache]: Analyzing trace with hash 579796939, now seen corresponding path program 1 times
[2019-10-13 21:40:51,521 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 21:40:51,522 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110624869]
[2019-10-13 21:40:51,522 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:40:51,522 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:40:51,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 21:40:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 21:40:51,700 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 21:40:51,700 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110624869]
[2019-10-13 21:40:51,701 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 21:40:51,701 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-10-13 21:40:51,701 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497564962]
[2019-10-13 21:40:51,701 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 21:40:51,702 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 21:40:51,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 21:40:51,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-10-13 21:40:51,703 INFO L87 Difference]: Start difference. First operand 544 states and 888 transitions. Second operand 3 states.
[2019-10-13 21:40:52,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 21:40:52,143 INFO L93 Difference]: Finished difference Result 1543 states and 2645 transitions.
[2019-10-13 21:40:52,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2019-10-13 21:40:52,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94
[2019-10-13 21:40:52,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 21:40:52,164 INFO L225 Difference]: With dead ends: 1543
[2019-10-13 21:40:52,164 INFO L226 Difference]: Without dead ends: 1004
[2019-10-13 21:40:52,166 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-10-13 21:40:52,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states.
[2019-10-13 21:40:52,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 1004.
[2019-10-13 21:40:52,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1004 states.
[2019-10-13 21:40:52,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1637 transitions.
[2019-10-13 21:40:52,252 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1637 transitions. Word has length 94
[2019-10-13 21:40:52,253 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-13 21:40:52,253 INFO L462 AbstractCegarLoop]: Abstraction has 1004 states and 1637 transitions.
[2019-10-13 21:40:52,253 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 21:40:52,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1637 transitions.
[2019-10-13 21:40:52,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122
[2019-10-13 21:40:52,260 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 21:40:52,260 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2019-10-13 21:40:52,262 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 21:40:52,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 21:40:52,262 INFO L82 PathProgramCache]: Analyzing trace with hash 95153079, now seen corresponding path program 1 times
[2019-10-13 21:40:52,262 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 21:40:52,263 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974064197]
[2019-10-13 21:40:52,263 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:40:52,263 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:40:52,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 21:40:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 21:40:52,426 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 21:40:52,427 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974064197]
[2019-10-13 21:40:52,429 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 21:40:52,429 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2019-10-13 21:40:52,429 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192916336]
[2019-10-13 21:40:52,430 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states
[2019-10-13 21:40:52,432 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 21:40:52,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2019-10-13 21:40:52,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2019-10-13 21:40:52,433 INFO L87 Difference]: Start difference. First operand 1004 states and 1637 transitions. Second operand 6 states.
[2019-10-13 21:40:53,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 21:40:53,005 INFO L93 Difference]: Finished difference Result 2444 states and 4170 transitions.
[2019-10-13 21:40:53,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2019-10-13 21:40:53,006 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121
[2019-10-13 21:40:53,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 21:40:53,018 INFO L225 Difference]: With dead ends: 2444
[2019-10-13 21:40:53,018 INFO L226 Difference]: Without dead ends: 1445
[2019-10-13 21:40:53,022 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 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 21:40:53,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states.
[2019-10-13 21:40:53,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1113.
[2019-10-13 21:40:53,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1113 states.
[2019-10-13 21:40:53,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1613 transitions.
[2019-10-13 21:40:53,076 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1613 transitions. Word has length 121
[2019-10-13 21:40:53,078 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-13 21:40:53,078 INFO L462 AbstractCegarLoop]: Abstraction has 1113 states and 1613 transitions.
[2019-10-13 21:40:53,078 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2019-10-13 21:40:53,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1613 transitions.
[2019-10-13 21:40:53,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133
[2019-10-13 21:40:53,084 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 21:40:53,084 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2019-10-13 21:40:53,085 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 21:40:53,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 21:40:53,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1205366486, now seen corresponding path program 1 times
[2019-10-13 21:40:53,085 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 21:40:53,085 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963885509]
[2019-10-13 21:40:53,086 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:40:53,086 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 21:40:53,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 21:40:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 21:40:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 21:40:53,213 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963885509]
[2019-10-13 21:40:53,213 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329374242]
[2019-10-13 21:40:53,213 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 21:40:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 21:40:53,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 7 conjunts are in the unsatisfiable core
[2019-10-13 21:40:53,349 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 21:40:53,386 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 21:40:53,387 INFO L321 TraceCheckSpWp]: Computing backward predicates...
[2019-10-13 21:40:53,506 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 21:40:53,507 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [436237829]
[2019-10-13 21:40:53,551 INFO L162 IcfgInterpreter]: Started Sifa with 81 locations of interest
[2019-10-13 21:40:53,552 INFO L169 IcfgInterpreter]: Building call graph
[2019-10-13 21:40:53,558 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start]
[2019-10-13 21:40:53,567 INFO L179 IcfgInterpreter]: Starting interpretation
[2019-10-13 21:40:53,567 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs
[2019-10-13 21:40:53,895 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 98 for LOIs
[2019-10-13 21:40:54,428 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 21:40:54,429 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: assume true;
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: assume true;
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.DagInterpreter.interpret(DagInterpreter.java:104)
at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118)
at java.util.HashMap.computeIfAbsent(HashMap.java:1127)
at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94)
at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178)
at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169)
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 21:40:54,439 INFO L168 Benchmark]: Toolchain (without parser) took 9477.07 ms. Allocated memory was 135.3 MB in the beginning and 364.4 MB in the end (delta: 229.1 MB). Free memory was 99.0 MB in the beginning and 187.8 MB in the end (delta: -88.8 MB). Peak memory consumption was 140.3 MB. Max. memory is 7.1 GB.
[2019-10-13 21:40:54,442 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 135.3 MB. Free memory was 118.5 MB in the beginning and 118.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2019-10-13 21:40:54,446 INFO L168 Benchmark]: CACSL2BoogieTranslator took 820.75 ms. Allocated memory was 135.3 MB in the beginning and 202.4 MB in the end (delta: 67.1 MB). Free memory was 98.7 MB in the beginning and 168.4 MB in the end (delta: -69.7 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB.
[2019-10-13 21:40:54,453 INFO L168 Benchmark]: Boogie Preprocessor took 162.75 ms. Allocated memory is still 202.4 MB. Free memory was 168.4 MB in the beginning and 163.9 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB.
[2019-10-13 21:40:54,456 INFO L168 Benchmark]: RCFGBuilder took 2214.07 ms. Allocated memory was 202.4 MB in the beginning and 229.1 MB in the end (delta: 26.7 MB). Free memory was 163.9 MB in the beginning and 78.2 MB in the end (delta: 85.7 MB). Peak memory consumption was 112.4 MB. Max. memory is 7.1 GB.
[2019-10-13 21:40:54,457 INFO L168 Benchmark]: TraceAbstraction took 6274.45 ms. Allocated memory was 229.1 MB in the beginning and 364.4 MB in the end (delta: 135.3 MB). Free memory was 78.2 MB in the beginning and 187.8 MB in the end (delta: -109.5 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB.
[2019-10-13 21:40:54,462 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.22 ms. Allocated memory is still 135.3 MB. Free memory was 118.5 MB in the beginning and 118.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 820.75 ms. Allocated memory was 135.3 MB in the beginning and 202.4 MB in the end (delta: 67.1 MB). Free memory was 98.7 MB in the beginning and 168.4 MB in the end (delta: -69.7 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 162.75 ms. Allocated memory is still 202.4 MB. Free memory was 168.4 MB in the beginning and 163.9 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 2214.07 ms. Allocated memory was 202.4 MB in the beginning and 229.1 MB in the end (delta: 26.7 MB). Free memory was 163.9 MB in the beginning and 78.2 MB in the end (delta: 85.7 MB). Peak memory consumption was 112.4 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 6274.45 ms. Allocated memory was 229.1 MB in the beginning and 364.4 MB in the end (delta: 135.3 MB). Free memory was 78.2 MB in the beginning and 187.8 MB in the end (delta: -109.5 MB). Peak memory consumption was 25.8 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: assume true;
de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true;: 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...