/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Fibonacci03.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-d623d84
[2020-07-20 13:08:53,591 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-07-20 13:08:53,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-20 13:08:53,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-20 13:08:53,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-20 13:08:53,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-20 13:08:53,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-20 13:08:53,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-20 13:08:53,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-20 13:08:53,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-20 13:08:53,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-07-20 13:08:53,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-20 13:08:53,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-20 13:08:53,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-20 13:08:53,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-20 13:08:53,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-20 13:08:53,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-20 13:08:53,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-20 13:08:53,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-20 13:08:53,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-20 13:08:53,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-20 13:08:53,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-20 13:08:53,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-07-20 13:08:53,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-20 13:08:53,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-20 13:08:53,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-20 13:08:53,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-20 13:08:53,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-20 13:08:53,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-20 13:08:53,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-20 13:08:53,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-20 13:08:53,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-20 13:08:53,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-20 13:08:53,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-20 13:08:53,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-20 13:08:53,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-20 13:08:53,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-20 13:08:53,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-20 13:08:53,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-20 13:08:53,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-20 13:08:53,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-07-20 13:08:53,683 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
[2020-07-20 13:08:53,709 INFO L113 SettingsManager]: Loading preferences was successful
[2020-07-20 13:08:53,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-20 13:08:53,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-20 13:08:53,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-07-20 13:08:53,713 INFO L138 SettingsManager]: * Use SBE=true
[2020-07-20 13:08:53,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-20 13:08:53,714 INFO L138 SettingsManager]: * sizeof long=4
[2020-07-20 13:08:53,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-07-20 13:08:53,714 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-07-20 13:08:53,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-07-20 13:08:53,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-07-20 13:08:53,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-20 13:08:53,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-07-20 13:08:53,715 INFO L138 SettingsManager]: * sizeof long double=12
[2020-07-20 13:08:53,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-07-20 13:08:53,715 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-07-20 13:08:53,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-07-20 13:08:53,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-20 13:08:53,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-07-20 13:08:53,716 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-07-20 13:08:53,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-07-20 13:08:53,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-20 13:08:53,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-20 13:08:53,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-07-20 13:08:53,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-20 13:08:53,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-07-20 13:08:53,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:08:53,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-20 13:08:53,718 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-07-20 13:08:53,718 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4
[2020-07-20 13:08:54,029 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-20 13:08:54,042 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-20 13:08:54,046 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-20 13:08:54,047 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-07-20 13:08:54,048 INFO L275 PluginConnector]: CDTParser initialized
[2020-07-20 13:08:54,048 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci03.c
[2020-07-20 13:08:54,112 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b0dae262/1ef68947396b468581de478a091f9ab6/FLAG03c124caa
[2020-07-20 13:08:54,526 INFO L306 CDTParser]: Found 1 translation units.
[2020-07-20 13:08:54,527 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Fibonacci03.c
[2020-07-20 13:08:54,534 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b0dae262/1ef68947396b468581de478a091f9ab6/FLAG03c124caa
[2020-07-20 13:08:54,952 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b0dae262/1ef68947396b468581de478a091f9ab6
[2020-07-20 13:08:54,962 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-20 13:08:54,966 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-20 13:08:54,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-20 13:08:54,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-20 13:08:54,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-20 13:08:54,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:08:54" (1/1) ...
[2020-07-20 13:08:54,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33761369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:08:54, skipping insertion in model container
[2020-07-20 13:08:54,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:08:54" (1/1) ...
[2020-07-20 13:08:54,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-07-20 13:08:55,000 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-07-20 13:08:55,156 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 13:08:55,161 INFO L203 MainTranslator]: Completed pre-run
[2020-07-20 13:08:55,176 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 13:08:55,187 INFO L208 MainTranslator]: Completed translation
[2020-07-20 13:08:55,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:08:55 WrapperNode
[2020-07-20 13:08:55,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-20 13:08:55,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-20 13:08:55,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-20 13:08:55,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-07-20 13:08:55,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:08:55" (1/1) ...
[2020-07-20 13:08:55,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:08:55" (1/1) ...
[2020-07-20 13:08:55,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:08:55" (1/1) ...
[2020-07-20 13:08:55,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:08:55" (1/1) ...
[2020-07-20 13:08:55,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:08:55" (1/1) ...
[2020-07-20 13:08:55,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:08:55" (1/1) ...
[2020-07-20 13:08:55,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:08:55" (1/1) ...
[2020-07-20 13:08:55,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-20 13:08:55,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-20 13:08:55,212 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-07-20 13:08:55,212 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-07-20 13:08:55,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:08:55" (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
[2020-07-20 13:08:55,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-20 13:08:55,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-20 13:08:55,350 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci
[2020-07-20 13:08:55,350 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-07-20 13:08:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-20 13:08:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-07-20 13:08:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci
[2020-07-20 13:08:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-07-20 13:08:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-20 13:08:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-20 13:08:55,541 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-20 13:08:55,541 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-07-20 13:08:55,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:08:55 BoogieIcfgContainer
[2020-07-20 13:08:55,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-20 13:08:55,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-20 13:08:55,548 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-07-20 13:08:55,551 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-07-20 13:08:55,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:08:54" (1/3) ...
[2020-07-20 13:08:55,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b773abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:08:55, skipping insertion in model container
[2020-07-20 13:08:55,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:08:55" (2/3) ...
[2020-07-20 13:08:55,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b773abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:08:55, skipping insertion in model container
[2020-07-20 13:08:55,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:08:55" (3/3) ...
[2020-07-20 13:08:55,556 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci03.c
[2020-07-20 13:08:55,589 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-20 13:08:55,609 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-20 13:08:55,646 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-20 13:08:55,694 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-07-20 13:08:55,694 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-07-20 13:08:55,694 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-20 13:08:55,694 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-20 13:08:55,695 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-20 13:08:55,695 INFO L380 AbstractCegarLoop]: Difference is false
[2020-07-20 13:08:55,695 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-20 13:08:55,695 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-20 13:08:55,713 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states.
[2020-07-20 13:08:55,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-07-20 13:08:55,720 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 13:08:55,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 13:08:55,724 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 13:08:55,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 13:08:55,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1900973920, now seen corresponding path program 1 times
[2020-07-20 13:08:55,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 13:08:55,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280485575]
[2020-07-20 13:08:55,741 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:08:55,808 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 13:08:55,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 13:08:55,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core
[2020-07-20 13:08:55,816 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 13:08:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 13:08:55,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 13:08:55,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280485575]
[2020-07-20 13:08:55,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 13:08:55,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-07-20 13:08:55,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327973412]
[2020-07-20 13:08:55,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-07-20 13:08:55,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 13:08:55,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-07-20 13:08:55,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-07-20 13:08:55,929 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states.
[2020-07-20 13:08:56,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 13:08:56,061 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions.
[2020-07-20 13:08:56,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2020-07-20 13:08:56,063 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14
[2020-07-20 13:08:56,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 13:08:56,074 INFO L225 Difference]: With dead ends: 36
[2020-07-20 13:08:56,074 INFO L226 Difference]: Without dead ends: 22
[2020-07-20 13:08:56,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-07-20 13:08:56,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2020-07-20 13:08:56,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2020-07-20 13:08:56,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2020-07-20 13:08:56,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions.
[2020-07-20 13:08:56,126 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 14
[2020-07-20 13:08:56,127 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 13:08:56,127 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions.
[2020-07-20 13:08:56,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-07-20 13:08:56,127 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions.
[2020-07-20 13:08:56,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2020-07-20 13:08:56,129 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 13:08:56,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 13:08:56,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:08:56,345 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 13:08:56,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 13:08:56,346 INFO L82 PathProgramCache]: Analyzing trace with hash -509871596, now seen corresponding path program 1 times
[2020-07-20 13:08:56,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 13:08:56,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315079784]
[2020-07-20 13:08:56,347 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:08:56,386 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 13:08:56,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 13:08:56,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core
[2020-07-20 13:08:56,389 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 13:08:56,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 13:08:56,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 13:08:56,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315079784]
[2020-07-20 13:08:56,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 13:08:56,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-07-20 13:08:56,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566864532]
[2020-07-20 13:08:56,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-07-20 13:08:56,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 13:08:56,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-07-20 13:08:56,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-07-20 13:08:56,421 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 5 states.
[2020-07-20 13:08:56,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 13:08:56,491 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions.
[2020-07-20 13:08:56,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2020-07-20 13:08:56,492 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15
[2020-07-20 13:08:56,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 13:08:56,494 INFO L225 Difference]: With dead ends: 28
[2020-07-20 13:08:56,494 INFO L226 Difference]: Without dead ends: 24
[2020-07-20 13:08:56,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-07-20 13:08:56,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2020-07-20 13:08:56,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22.
[2020-07-20 13:08:56,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2020-07-20 13:08:56,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions.
[2020-07-20 13:08:56,504 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15
[2020-07-20 13:08:56,504 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 13:08:56,504 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions.
[2020-07-20 13:08:56,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-07-20 13:08:56,505 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions.
[2020-07-20 13:08:56,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-07-20 13:08:56,506 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 13:08:56,507 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 13:08:56,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:08:56,717 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 13:08:56,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 13:08:56,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1203666899, now seen corresponding path program 1 times
[2020-07-20 13:08:56,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 13:08:56,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102782039]
[2020-07-20 13:08:56,722 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:08:56,778 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 13:08:56,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 13:08:56,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core
[2020-07-20 13:08:56,783 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 13:08:56,840 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2020-07-20 13:08:56,843 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2020-07-20 13:08:57,052 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:08:57,058 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:08:57,104 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2020-07-20 13:08:57,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102782039]
[2020-07-20 13:08:57,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-20 13:08:57,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10
[2020-07-20 13:08:57,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58363538]
[2020-07-20 13:08:57,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-07-20 13:08:57,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 13:08:57,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-07-20 13:08:57,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90
[2020-07-20 13:08:57,114 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 10 states.
[2020-07-20 13:08:57,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 13:08:57,298 INFO L93 Difference]: Finished difference Result 40 states and 58 transitions.
[2020-07-20 13:08:57,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2020-07-20 13:08:57,299 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27
[2020-07-20 13:08:57,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 13:08:57,302 INFO L225 Difference]: With dead ends: 40
[2020-07-20 13:08:57,302 INFO L226 Difference]: Without dead ends: 34
[2020-07-20 13:08:57,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156
[2020-07-20 13:08:57,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2020-07-20 13:08:57,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32.
[2020-07-20 13:08:57,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2020-07-20 13:08:57,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2020-07-20 13:08:57,318 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 27
[2020-07-20 13:08:57,318 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 13:08:57,318 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2020-07-20 13:08:57,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-07-20 13:08:57,319 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2020-07-20 13:08:57,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2020-07-20 13:08:57,325 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 13:08:57,325 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 13:08:57,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:08:57,540 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 13:08:57,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 13:08:57,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1554048393, now seen corresponding path program 1 times
[2020-07-20 13:08:57,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 13:08:57,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258393711]
[2020-07-20 13:08:57,542 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:08:57,591 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 13:08:57,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 13:08:57,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-07-20 13:08:57,596 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 13:08:57,650 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 48 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked.
[2020-07-20 13:08:57,650 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2020-07-20 13:08:57,923 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:08:57,924 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:08:57,974 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:08:58,015 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 55 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked.
[2020-07-20 13:08:58,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258393711]
[2020-07-20 13:08:58,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-20 13:08:58,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 12
[2020-07-20 13:08:58,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409702146]
[2020-07-20 13:08:58,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-07-20 13:08:58,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 13:08:58,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-07-20 13:08:58,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132
[2020-07-20 13:08:58,019 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 12 states.
[2020-07-20 13:08:58,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 13:08:58,236 INFO L93 Difference]: Finished difference Result 58 states and 115 transitions.
[2020-07-20 13:08:58,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2020-07-20 13:08:58,239 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55
[2020-07-20 13:08:58,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 13:08:58,247 INFO L225 Difference]: With dead ends: 58
[2020-07-20 13:08:58,248 INFO L226 Difference]: Without dead ends: 52
[2020-07-20 13:08:58,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 94 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240
[2020-07-20 13:08:58,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2020-07-20 13:08:58,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 37.
[2020-07-20 13:08:58,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states.
[2020-07-20 13:08:58,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 59 transitions.
[2020-07-20 13:08:58,282 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 59 transitions. Word has length 55
[2020-07-20 13:08:58,283 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 13:08:58,283 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 59 transitions.
[2020-07-20 13:08:58,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-07-20 13:08:58,286 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 59 transitions.
[2020-07-20 13:08:58,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158
[2020-07-20 13:08:58,296 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 13:08:58,296 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 12, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 13:08:58,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:08:58,502 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 13:08:58,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 13:08:58,503 INFO L82 PathProgramCache]: Analyzing trace with hash 433565041, now seen corresponding path program 2 times
[2020-07-20 13:08:58,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 13:08:58,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982549888]
[2020-07-20 13:08:58,505 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:08:58,614 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 13:08:58,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 13:08:58,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 12 conjunts are in the unsatisfiable core
[2020-07-20 13:08:58,623 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 13:08:58,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1287 backedges. 69 proven. 379 refuted. 0 times theorem prover too weak. 839 trivial. 0 not checked.
[2020-07-20 13:08:58,709 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2020-07-20 13:08:59,453 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:08:59,643 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:08:59,740 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:08:59,742 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:08:59,792 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:08:59,793 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:08:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1287 backedges. 69 proven. 401 refuted. 0 times theorem prover too weak. 817 trivial. 0 not checked.
[2020-07-20 13:08:59,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982549888]
[2020-07-20 13:08:59,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-20 13:08:59,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 16
[2020-07-20 13:08:59,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630771251]
[2020-07-20 13:08:59,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-07-20 13:08:59,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 13:08:59,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-07-20 13:08:59,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240
[2020-07-20 13:08:59,860 INFO L87 Difference]: Start difference. First operand 37 states and 59 transitions. Second operand 16 states.
[2020-07-20 13:09:00,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 13:09:00,234 INFO L93 Difference]: Finished difference Result 73 states and 184 transitions.
[2020-07-20 13:09:00,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2020-07-20 13:09:00,235 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157
[2020-07-20 13:09:00,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 13:09:00,240 INFO L225 Difference]: With dead ends: 73
[2020-07-20 13:09:00,240 INFO L226 Difference]: Without dead ends: 67
[2020-07-20 13:09:00,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 291 SyntacticMatches, 9 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462
[2020-07-20 13:09:00,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states.
[2020-07-20 13:09:00,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 47.
[2020-07-20 13:09:00,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states.
[2020-07-20 13:09:00,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 91 transitions.
[2020-07-20 13:09:00,261 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 91 transitions. Word has length 157
[2020-07-20 13:09:00,262 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 13:09:00,262 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 91 transitions.
[2020-07-20 13:09:00,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-07-20 13:09:00,262 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 91 transitions.
[2020-07-20 13:09:00,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248
[2020-07-20 13:09:00,267 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 13:09:00,267 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 29, 17, 17, 17, 17, 17, 17, 17, 12, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 13:09:00,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:09:00,481 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 13:09:00,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 13:09:00,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1759711241, now seen corresponding path program 2 times
[2020-07-20 13:09:00,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 13:09:00,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212814852]
[2020-07-20 13:09:00,482 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:09:00,580 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 13:09:00,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 13:09:00,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 14 conjunts are in the unsatisfiable core
[2020-07-20 13:09:00,590 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 13:09:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3330 backedges. 132 proven. 828 refuted. 0 times theorem prover too weak. 2370 trivial. 0 not checked.
[2020-07-20 13:09:00,699 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2020-07-20 13:09:01,814 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:02,095 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:02,278 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:02,373 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:02,420 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:02,421 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:02,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3330 backedges. 132 proven. 868 refuted. 0 times theorem prover too weak. 2330 trivial. 0 not checked.
[2020-07-20 13:09:02,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212814852]
[2020-07-20 13:09:02,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-20 13:09:02,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15] total 18
[2020-07-20 13:09:02,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889429968]
[2020-07-20 13:09:02,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states
[2020-07-20 13:09:02,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 13:09:02,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2020-07-20 13:09:02,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306
[2020-07-20 13:09:02,497 INFO L87 Difference]: Start difference. First operand 47 states and 91 transitions. Second operand 18 states.
[2020-07-20 13:09:03,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 13:09:03,022 INFO L93 Difference]: Finished difference Result 88 states and 271 transitions.
[2020-07-20 13:09:03,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2020-07-20 13:09:03,023 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 247
[2020-07-20 13:09:03,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 13:09:03,035 INFO L225 Difference]: With dead ends: 88
[2020-07-20 13:09:03,036 INFO L226 Difference]: Without dead ends: 82
[2020-07-20 13:09:03,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 466 SyntacticMatches, 11 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600
[2020-07-20 13:09:03,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states.
[2020-07-20 13:09:03,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 52.
[2020-07-20 13:09:03,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states.
[2020-07-20 13:09:03,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 110 transitions.
[2020-07-20 13:09:03,090 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 110 transitions. Word has length 247
[2020-07-20 13:09:03,092 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 13:09:03,092 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 110 transitions.
[2020-07-20 13:09:03,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states.
[2020-07-20 13:09:03,093 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 110 transitions.
[2020-07-20 13:09:03,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1172
[2020-07-20 13:09:03,157 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 13:09:03,158 INFO L422 BasicCegarLoop]: trace histogram [179, 179, 90, 89, 89, 89, 89, 89, 89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 13:09:03,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:09:03,372 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 13:09:03,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 13:09:03,372 INFO L82 PathProgramCache]: Analyzing trace with hash 396575871, now seen corresponding path program 3 times
[2020-07-20 13:09:03,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 13:09:03,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299870604]
[2020-07-20 13:09:03,373 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:09:03,731 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 13:09:03,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 13:09:03,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 18 conjunts are in the unsatisfiable core
[2020-07-20 13:09:03,759 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 13:09:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 83304 backedges. 991 proven. 6102 refuted. 0 times theorem prover too weak. 76211 trivial. 0 not checked.
[2020-07-20 13:09:04,487 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2020-07-20 13:09:08,435 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:09,473 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:10,351 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:10,744 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:10,745 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:10,937 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:10,938 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:11,024 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:11,025 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:11,069 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:11,071 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:11,603 INFO L134 CoverageAnalysis]: Checked inductivity of 83304 backedges. 991 proven. 6172 refuted. 0 times theorem prover too weak. 76141 trivial. 0 not checked.
[2020-07-20 13:09:11,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299870604]
[2020-07-20 13:09:11,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-20 13:09:11,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19] total 22
[2020-07-20 13:09:11,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221841697]
[2020-07-20 13:09:11,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states
[2020-07-20 13:09:11,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 13:09:11,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2020-07-20 13:09:11,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462
[2020-07-20 13:09:11,608 INFO L87 Difference]: Start difference. First operand 52 states and 110 transitions. Second operand 22 states.
[2020-07-20 13:09:12,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 13:09:12,149 INFO L93 Difference]: Finished difference Result 103 states and 376 transitions.
[2020-07-20 13:09:12,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2020-07-20 13:09:12,150 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 1171
[2020-07-20 13:09:12,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 13:09:12,158 INFO L225 Difference]: With dead ends: 103
[2020-07-20 13:09:12,159 INFO L226 Difference]: Without dead ends: 97
[2020-07-20 13:09:12,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2351 GetRequests, 2307 SyntacticMatches, 15 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=303, Invalid=627, Unknown=0, NotChecked=0, Total=930
[2020-07-20 13:09:12,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states.
[2020-07-20 13:09:12,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 62.
[2020-07-20 13:09:12,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states.
[2020-07-20 13:09:12,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 154 transitions.
[2020-07-20 13:09:12,185 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 154 transitions. Word has length 1171
[2020-07-20 13:09:12,187 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 13:09:12,187 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 154 transitions.
[2020-07-20 13:09:12,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states.
[2020-07-20 13:09:12,187 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 154 transitions.
[2020-07-20 13:09:12,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1798
[2020-07-20 13:09:12,298 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 13:09:12,299 INFO L422 BasicCegarLoop]: trace histogram [263, 263, 211, 131, 131, 131, 131, 131, 131, 131, 80, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 13:09:12,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:09:12,513 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 13:09:12,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 13:09:12,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1518329103, now seen corresponding path program 3 times
[2020-07-20 13:09:12,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 13:09:12,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299569579]
[2020-07-20 13:09:12,516 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:09:13,070 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 13:09:13,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 13:09:13,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 3250 conjuncts, 18 conjunts are in the unsatisfiable core
[2020-07-20 13:09:13,104 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 13:09:14,495 INFO L134 CoverageAnalysis]: Checked inductivity of 194027 backedges. 31058 proven. 418 refuted. 0 times theorem prover too weak. 162551 trivial. 0 not checked.
[2020-07-20 13:09:14,496 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2020-07-20 13:09:22,185 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:22,186 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:22,293 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:22,293 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:22,346 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:22,347 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:22,741 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:22,835 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:22,886 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:24,104 INFO L134 CoverageAnalysis]: Checked inductivity of 194027 backedges. 1796 proven. 13909 refuted. 0 times theorem prover too weak. 178322 trivial. 0 not checked.
[2020-07-20 13:09:24,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299569579]
[2020-07-20 13:09:24,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-20 13:09:24,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19] total 21
[2020-07-20 13:09:24,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048521668]
[2020-07-20 13:09:24,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-07-20 13:09:24,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 13:09:24,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-07-20 13:09:24,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420
[2020-07-20 13:09:24,108 INFO L87 Difference]: Start difference. First operand 62 states and 154 transitions. Second operand 21 states.
[2020-07-20 13:09:24,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 13:09:24,626 INFO L93 Difference]: Finished difference Result 135 states and 390 transitions.
[2020-07-20 13:09:24,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2020-07-20 13:09:24,626 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 1797
[2020-07-20 13:09:24,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 13:09:24,628 INFO L225 Difference]: With dead ends: 135
[2020-07-20 13:09:24,628 INFO L226 Difference]: Without dead ends: 80
[2020-07-20 13:09:24,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3609 GetRequests, 3557 SyntacticMatches, 17 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=363, Invalid=969, Unknown=0, NotChecked=0, Total=1332
[2020-07-20 13:09:24,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states.
[2020-07-20 13:09:24,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80.
[2020-07-20 13:09:24,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states.
[2020-07-20 13:09:24,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 123 transitions.
[2020-07-20 13:09:24,647 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 123 transitions. Word has length 1797
[2020-07-20 13:09:24,648 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 13:09:24,648 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 123 transitions.
[2020-07-20 13:09:24,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states.
[2020-07-20 13:09:24,648 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 123 transitions.
[2020-07-20 13:09:24,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1226
[2020-07-20 13:09:24,663 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 13:09:24,663 INFO L422 BasicCegarLoop]: trace histogram [179, 179, 143, 89, 89, 89, 89, 89, 89, 89, 54, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 13:09:24,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:09:24,879 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 13:09:24,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 13:09:24,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1711597585, now seen corresponding path program 4 times
[2020-07-20 13:09:24,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 13:09:24,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537859229]
[2020-07-20 13:09:24,882 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:09:25,312 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 13:09:25,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 13:09:25,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 22 conjunts are in the unsatisfiable core
[2020-07-20 13:09:25,343 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 13:09:25,974 INFO L134 CoverageAnalysis]: Checked inductivity of 89541 backedges. 25686 proven. 730 refuted. 0 times theorem prover too weak. 63125 trivial. 0 not checked.
[2020-07-20 13:09:25,974 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2020-07-20 13:09:32,013 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:32,180 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:32,274 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:32,329 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:32,963 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:32,964 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:33,126 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:33,222 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:33,223 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:33,275 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:33,884 INFO L134 CoverageAnalysis]: Checked inductivity of 89541 backedges. 1445 proven. 10089 refuted. 0 times theorem prover too weak. 78007 trivial. 0 not checked.
[2020-07-20 13:09:33,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537859229]
[2020-07-20 13:09:33,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-20 13:09:33,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 23] total 25
[2020-07-20 13:09:33,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069814046]
[2020-07-20 13:09:33,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states
[2020-07-20 13:09:33,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 13:09:33,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2020-07-20 13:09:33,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600
[2020-07-20 13:09:33,888 INFO L87 Difference]: Start difference. First operand 80 states and 123 transitions. Second operand 25 states.
[2020-07-20 13:09:34,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 13:09:34,760 INFO L93 Difference]: Finished difference Result 170 states and 326 transitions.
[2020-07-20 13:09:34,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2020-07-20 13:09:34,761 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 1225
[2020-07-20 13:09:34,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 13:09:34,764 INFO L225 Difference]: With dead ends: 170
[2020-07-20 13:09:34,765 INFO L226 Difference]: Without dead ends: 99
[2020-07-20 13:09:34,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2470 GetRequests, 2405 SyntacticMatches, 21 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070
[2020-07-20 13:09:34,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states.
[2020-07-20 13:09:34,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 92.
[2020-07-20 13:09:34,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states.
[2020-07-20 13:09:34,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 136 transitions.
[2020-07-20 13:09:34,781 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 136 transitions. Word has length 1225
[2020-07-20 13:09:34,781 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 13:09:34,781 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 136 transitions.
[2020-07-20 13:09:34,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states.
[2020-07-20 13:09:34,782 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 136 transitions.
[2020-07-20 13:09:34,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1146
[2020-07-20 13:09:34,794 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 13:09:34,795 INFO L422 BasicCegarLoop]: trace histogram [167, 167, 135, 83, 83, 83, 83, 83, 83, 83, 52, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 13:09:35,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:09:35,008 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 13:09:35,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 13:09:35,008 INFO L82 PathProgramCache]: Analyzing trace with hash 314453809, now seen corresponding path program 5 times
[2020-07-20 13:09:35,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 13:09:35,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831549041]
[2020-07-20 13:09:35,009 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:09:35,409 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 13:09:35,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 13:09:35,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 2074 conjuncts, 30 conjunts are in the unsatisfiable core
[2020-07-20 13:09:35,427 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 13:09:36,303 INFO L134 CoverageAnalysis]: Checked inductivity of 78101 backedges. 41131 proven. 3797 refuted. 0 times theorem prover too weak. 33173 trivial. 0 not checked.
[2020-07-20 13:09:36,303 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2020-07-20 13:09:42,186 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:42,642 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:42,920 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:43,090 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:43,091 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:43,190 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:43,260 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:44,837 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:45,303 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:45,586 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:45,763 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:45,764 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:45,864 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:45,923 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 13:09:46,505 INFO L134 CoverageAnalysis]: Checked inductivity of 78101 backedges. 2502 proven. 10674 refuted. 0 times theorem prover too weak. 64925 trivial. 0 not checked.
[2020-07-20 13:09:46,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831549041]
[2020-07-20 13:09:46,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-20 13:09:46,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 31] total 33
[2020-07-20 13:09:46,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767946016]
[2020-07-20 13:09:46,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states
[2020-07-20 13:09:46,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 13:09:46,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2020-07-20 13:09:46,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=881, Unknown=0, NotChecked=0, Total=1056
[2020-07-20 13:09:46,509 INFO L87 Difference]: Start difference. First operand 92 states and 136 transitions. Second operand 33 states.
[2020-07-20 13:09:47,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 13:09:47,995 INFO L93 Difference]: Finished difference Result 221 states and 433 transitions.
[2020-07-20 13:09:47,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states.
[2020-07-20 13:09:47,996 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 1145
[2020-07-20 13:09:47,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 13:09:47,999 INFO L225 Difference]: With dead ends: 221
[2020-07-20 13:09:47,999 INFO L226 Difference]: Without dead ends: 138
[2020-07-20 13:09:48,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2320 GetRequests, 2229 SyntacticMatches, 29 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=987, Invalid=3045, Unknown=0, NotChecked=0, Total=4032
[2020-07-20 13:09:48,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states.
[2020-07-20 13:09:48,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 116.
[2020-07-20 13:09:48,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states.
[2020-07-20 13:09:48,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 165 transitions.
[2020-07-20 13:09:48,015 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 165 transitions. Word has length 1145
[2020-07-20 13:09:48,016 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 13:09:48,016 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 165 transitions.
[2020-07-20 13:09:48,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states.
[2020-07-20 13:09:48,016 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 165 transitions.
[2020-07-20 13:09:48,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751
[2020-07-20 13:09:48,023 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 13:09:48,023 INFO L422 BasicCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 13:09:48,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:09:48,237 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 13:09:48,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 13:09:48,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1020040988, now seen corresponding path program 6 times
[2020-07-20 13:09:48,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 13:09:48,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605221353]
[2020-07-20 13:09:48,239 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:09:48,670 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-20 13:09:48,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 13:09:48,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 1668 conjuncts, 220 conjunts are in the unsatisfiable core
[2020-07-20 13:09:48,695 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 13:09:49,502 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 5957 proven. 4942 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked.
[2020-07-20 13:09:49,503 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2020-07-20 13:09:50,470 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:09:51,182 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2020-07-20 13:09:51,371 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2020-07-20 13:09:51,573 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2020-07-20 13:09:51,783 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2020-07-20 13:09:52,687 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:09:53,216 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 185
[2020-07-20 13:09:53,642 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 185
[2020-07-20 13:09:54,078 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-07-20 13:09:54,517 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-07-20 13:09:55,436 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:09:56,173 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2020-07-20 13:09:56,369 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2020-07-20 13:09:56,569 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2020-07-20 13:09:56,765 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2020-07-20 13:09:57,825 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 302
[2020-07-20 13:09:58,884 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 302
[2020-07-20 13:09:59,935 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 304
[2020-07-20 13:10:01,105 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 304
[2020-07-20 13:10:02,060 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:10:02,835 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2020-07-20 13:10:03,034 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2020-07-20 13:10:03,246 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2020-07-20 13:10:03,460 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2020-07-20 13:10:04,422 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:10:04,523 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:10:04,974 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 185
[2020-07-20 13:10:05,434 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 185
[2020-07-20 13:10:05,915 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-07-20 13:10:06,386 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-07-20 13:10:09,057 WARN L193 SmtUtils]: Spent 2.66 s on a formula simplification that was a NOOP. DAG size: 491
[2020-07-20 13:10:11,788 WARN L193 SmtUtils]: Spent 2.72 s on a formula simplification that was a NOOP. DAG size: 491
[2020-07-20 13:10:14,515 WARN L193 SmtUtils]: Spent 2.71 s on a formula simplification that was a NOOP. DAG size: 493
[2020-07-20 13:10:17,282 WARN L193 SmtUtils]: Spent 2.75 s on a formula simplification that was a NOOP. DAG size: 493
[2020-07-20 13:10:18,294 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:10:18,410 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:10:18,528 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:10:18,646 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:10:19,417 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2020-07-20 13:10:19,650 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2020-07-20 13:10:19,885 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2020-07-20 13:10:20,121 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2020-07-20 13:10:21,008 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:10:21,122 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:10:21,238 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:10:21,358 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:10:21,881 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification that was a NOOP. DAG size: 185
[2020-07-20 13:10:22,467 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 185
[2020-07-20 13:10:22,981 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-07-20 13:10:23,495 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-07-20 13:10:24,051 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification that was a NOOP. DAG size: 269
[2020-07-20 13:10:24,582 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 266
[2020-07-20 13:10:25,103 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification that was a NOOP. DAG size: 263
[2020-07-20 13:10:25,610 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 259
[2020-07-20 13:10:26,104 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 255
[2020-07-20 13:10:26,584 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 252
[2020-07-20 13:10:27,061 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 249
[2020-07-20 13:10:27,526 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 245
[2020-07-20 13:10:27,981 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 241
[2020-07-20 13:10:28,428 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 237
[2020-07-20 13:10:28,877 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 233
[2020-07-20 13:10:29,310 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 229
[2020-07-20 13:10:29,737 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 226
[2020-07-20 13:10:30,149 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 223
[2020-07-20 13:10:30,559 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 219
[2020-07-20 13:10:30,965 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 215
[2020-07-20 13:10:31,355 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 211
[2020-07-20 13:10:31,735 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 208
[2020-07-20 13:10:32,111 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 204
[2020-07-20 13:10:32,476 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 201
[2020-07-20 13:10:32,834 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 198
[2020-07-20 13:10:33,180 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 195
[2020-07-20 13:10:33,518 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 191
[2020-07-20 13:10:33,854 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 189
[2020-07-20 13:10:34,179 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-07-20 13:10:34,495 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 182
[2020-07-20 13:10:34,804 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 178
[2020-07-20 13:10:35,162 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 175
[2020-07-20 13:10:35,456 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2020-07-20 13:10:35,738 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 168
[2020-07-20 13:10:36,020 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 165
[2020-07-20 13:10:36,292 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 162
[2020-07-20 13:10:36,560 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 158
[2020-07-20 13:10:36,821 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 154
[2020-07-20 13:10:37,073 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 151
[2020-07-20 13:10:37,317 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 148
[2020-07-20 13:10:37,554 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 144
[2020-07-20 13:10:37,784 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 140
[2020-07-20 13:10:38,011 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 136
[2020-07-20 13:10:38,227 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 132
[2020-07-20 13:10:38,443 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 131
[2020-07-20 13:10:38,648 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2020-07-20 13:10:38,848 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 124
[2020-07-20 13:10:39,037 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 120
[2020-07-20 13:10:39,222 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 116
[2020-07-20 13:10:39,400 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 114
[2020-07-20 13:10:39,575 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 111
[2020-07-20 13:10:39,743 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 107
[2020-07-20 13:10:39,905 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 105
[2020-07-20 13:10:40,059 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 101
[2020-07-20 13:10:40,203 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 98
[2020-07-20 13:10:40,344 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 95
[2020-07-20 13:10:40,480 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 92
[2020-07-20 13:10:40,609 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 88
[2020-07-20 13:10:40,733 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 84
[2020-07-20 13:10:40,851 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 80
[2020-07-20 13:10:40,965 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 76
[2020-07-20 13:10:41,071 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 74
[2020-07-20 13:10:41,173 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:10:43,203 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:10:43,333 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:10:43,466 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:10:43,599 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:10:43,731 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 100
[2020-07-20 13:10:43,861 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 97
[2020-07-20 13:10:43,985 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 94
[2020-07-20 13:10:44,101 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 90
[2020-07-20 13:10:44,215 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 86
[2020-07-20 13:10:44,323 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 82
[2020-07-20 13:10:48,584 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:10:48,711 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:10:48,843 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:10:48,983 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:10:49,913 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2020-07-20 13:10:50,172 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2020-07-20 13:10:50,439 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2020-07-20 13:10:50,711 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2020-07-20 13:10:54,373 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:10:54,560 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:10:54,702 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:10:54,845 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:10:58,233 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:10:58,381 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:10:58,522 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:10:58,662 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:10:59,639 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2020-07-20 13:10:59,905 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2020-07-20 13:11:00,184 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2020-07-20 13:11:00,452 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2020-07-20 13:11:01,610 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:11:01,749 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:11:01,894 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:11:02,043 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:11:02,611 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification that was a NOOP. DAG size: 185
[2020-07-20 13:11:03,177 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification that was a NOOP. DAG size: 185
[2020-07-20 13:11:03,762 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-07-20 13:11:04,342 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-07-20 13:11:05,549 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:11:05,683 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:11:05,829 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:11:05,971 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:11:07,004 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2020-07-20 13:11:07,276 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2020-07-20 13:11:07,563 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2020-07-20 13:11:07,848 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2020-07-20 13:11:09,107 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 302
[2020-07-20 13:11:10,388 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 302
[2020-07-20 13:11:11,740 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification that was a NOOP. DAG size: 304
[2020-07-20 13:11:13,038 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 304
[2020-07-20 13:11:14,486 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:11:14,639 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:11:14,797 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:11:14,955 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:11:16,082 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2020-07-20 13:11:16,373 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2020-07-20 13:11:16,678 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2020-07-20 13:11:16,996 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2020-07-20 13:11:17,392 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 165
[2020-07-20 13:11:17,706 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 162
[2020-07-20 13:11:18,003 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 159
[2020-07-20 13:11:18,301 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 155
[2020-07-20 13:11:18,589 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 151
[2020-07-20 13:11:18,867 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 147
[2020-07-20 13:11:19,142 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 143
[2020-07-20 13:11:19,399 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 140
[2020-07-20 13:11:19,660 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 137
[2020-07-20 13:11:19,904 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 133
[2020-07-20 13:11:20,147 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 130
[2020-07-20 13:11:20,377 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 126
[2020-07-20 13:11:20,608 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 123
[2020-07-20 13:11:20,826 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 120
[2020-07-20 13:11:21,038 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 116
[2020-07-20 13:11:21,240 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2020-07-20 13:11:21,439 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 109
[2020-07-20 13:11:21,629 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 105
[2020-07-20 13:11:21,817 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 101
[2020-07-20 13:11:21,996 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 97
[2020-07-20 13:11:22,163 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 93
[2020-07-20 13:11:22,332 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 91
[2020-07-20 13:11:22,486 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 88
[2020-07-20 13:11:22,636 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 85
[2020-07-20 13:11:22,784 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 81
[2020-07-20 13:11:22,923 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 78
[2020-07-20 13:11:23,052 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 75
[2020-07-20 13:11:23,174 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 72
[2020-07-20 13:11:23,289 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 69
[2020-07-20 13:11:23,398 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 66
[2020-07-20 13:11:23,501 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64
[2020-07-20 13:11:23,979 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 49
[2020-07-20 13:11:28,398 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:11:28,562 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:11:28,729 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:11:28,894 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:11:33,381 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:11:33,541 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:11:33,717 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:11:33,889 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:11:35,163 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2020-07-20 13:11:35,488 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2020-07-20 13:11:35,840 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2020-07-20 13:11:36,225 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2020-07-20 13:11:37,790 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:11:37,952 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:11:38,130 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:11:38,299 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:11:38,941 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 185
[2020-07-20 13:11:39,584 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification that was a NOOP. DAG size: 185
[2020-07-20 13:11:40,267 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-07-20 13:11:40,935 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-07-20 13:11:41,995 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 43
[2020-07-20 13:11:42,604 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:11:42,773 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:11:42,952 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:11:43,131 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:11:43,317 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 100
[2020-07-20 13:11:43,496 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 97
[2020-07-20 13:11:43,663 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 94
[2020-07-20 13:11:43,825 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 90
[2020-07-20 13:11:43,975 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 87
[2020-07-20 13:11:44,123 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 83
[2020-07-20 13:11:44,263 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 79
[2020-07-20 13:11:44,396 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 75
[2020-07-20 13:11:44,523 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 72
[2020-07-20 13:11:44,645 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 69
[2020-07-20 13:11:44,761 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 66
[2020-07-20 13:11:44,870 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 63
[2020-07-20 13:11:49,736 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 43
[2020-07-20 13:11:49,840 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 43
[2020-07-20 13:11:50,447 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:11:50,595 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:11:50,755 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:11:50,909 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:11:52,089 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2020-07-20 13:11:52,436 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2020-07-20 13:11:52,802 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2020-07-20 13:11:53,158 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2020-07-20 13:11:54,180 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 43
[2020-07-20 13:11:54,388 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 61
[2020-07-20 13:11:57,984 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:11:58,162 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2020-07-20 13:11:58,348 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:11:58,537 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2020-07-20 13:12:00,384 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 41
[2020-07-20 13:12:02,174 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 5957 proven. 4942 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked.
[2020-07-20 13:12:02,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605221353]
[2020-07-20 13:12:02,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-20 13:12:02,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 36
[2020-07-20 13:12:02,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176094765]
[2020-07-20 13:12:02,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states
[2020-07-20 13:12:02,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 13:12:02,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2020-07-20 13:12:02,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1013, Unknown=0, NotChecked=0, Total=1260
[2020-07-20 13:12:02,177 INFO L87 Difference]: Start difference. First operand 116 states and 165 transitions. Second operand 36 states.
[2020-07-20 13:12:03,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 13:12:03,031 INFO L93 Difference]: Finished difference Result 123 states and 178 transitions.
[2020-07-20 13:12:03,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states.
[2020-07-20 13:12:03,031 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 750
[2020-07-20 13:12:03,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 13:12:03,033 INFO L225 Difference]: With dead ends: 123
[2020-07-20 13:12:03,033 INFO L226 Difference]: Without dead ends: 0
[2020-07-20 13:12:03,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1502 GetRequests, 1301 SyntacticMatches, 164 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3527 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=319, Invalid=1163, Unknown=0, NotChecked=0, Total=1482
[2020-07-20 13:12:03,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-07-20 13:12:03,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-07-20 13:12:03,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-07-20 13:12:03,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-07-20 13:12:03,038 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 750
[2020-07-20 13:12:03,038 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 13:12:03,038 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-07-20 13:12:03,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states.
[2020-07-20 13:12:03,039 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-07-20 13:12:03,039 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-07-20 13:12:03,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 13:12:03,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-07-20 13:12:04,479 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 8
[2020-07-20 13:12:06,498 WARN L193 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 111 DAG size of output: 45
[2020-07-20 13:12:06,503 INFO L268 CegarLoopResult]: For program point fibonacciFINAL(lines 14 22) no Hoare annotation was computed.
[2020-07-20 13:12:06,503 INFO L271 CegarLoopResult]: At program point fibonacciENTRY(lines 14 22) the Hoare annotation is: true
[2020-07-20 13:12:06,504 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (<= |fibonacci_#in~n| fibonacci_~n) (<= 2 |fibonacci_#in~n|) (<= fibonacci_~n |fibonacci_#in~n|))
[2020-07-20 13:12:06,504 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed.
[2020-07-20 13:12:06,504 INFO L264 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse1 (<= |fibonacci_#in~n| fibonacci_~n)) (.cse2 (<= fibonacci_~n |fibonacci_#in~n|)) (.cse0 (<= 5 |fibonacci_#in~n|))) (and (or (and (<= |fibonacci_#in~n| 5) .cse0) (and .cse1 (<= 2 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 4) .cse2) (and .cse1 (< |fibonacci_#in~n| 9) .cse2 (<= 13 |fibonacci_#t~ret0|)) (and .cse1 (<= 21 |fibonacci_#t~ret0|) .cse2) (and (<= 1 |fibonacci_#t~ret0|) .cse1 (<= |fibonacci_#in~n| 3) .cse2) (and (<= |fibonacci_#in~n| 7) .cse1 (<= 8 |fibonacci_#t~ret0|) .cse2) (and (<= 5 |fibonacci_#t~ret0|) (<= 6 |fibonacci_#in~n|) (<= |fibonacci_#in~n| 6))) (not (<= |fibonacci_#in~n| 1)) (or (and .cse1 (<= 3 |fibonacci_#t~ret0|) .cse2) (not .cse0))))
[2020-07-20 13:12:06,504 INFO L268 CegarLoopResult]: For program point fibonacciEXIT(lines 14 22) no Hoare annotation was computed.
[2020-07-20 13:12:06,505 INFO L268 CegarLoopResult]: For program point L17(lines 17 21) no Hoare annotation was computed.
[2020-07-20 13:12:06,505 INFO L268 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed.
[2020-07-20 13:12:06,505 INFO L268 CegarLoopResult]: For program point L15(lines 15 21) no Hoare annotation was computed.
[2020-07-20 13:12:06,505 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2020-07-20 13:12:06,505 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-07-20 13:12:06,506 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-07-20 13:12:06,506 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-07-20 13:12:06,506 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-07-20 13:12:06,506 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-07-20 13:12:06,506 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 34) no Hoare annotation was computed.
[2020-07-20 13:12:06,506 INFO L268 CegarLoopResult]: For program point L31(lines 31 35) no Hoare annotation was computed.
[2020-07-20 13:12:06,507 INFO L271 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: true
[2020-07-20 13:12:06,507 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 25 36) the Hoare annotation is: true
[2020-07-20 13:12:06,507 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed.
[2020-07-20 13:12:06,507 INFO L268 CegarLoopResult]: For program point L27(lines 27 29) no Hoare annotation was computed.
[2020-07-20 13:12:06,507 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 25 36) no Hoare annotation was computed.
[2020-07-20 13:12:06,507 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 25 36) no Hoare annotation was computed.
[2020-07-20 13:12:06,507 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed.
[2020-07-20 13:12:06,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:12:06 BoogieIcfgContainer
[2020-07-20 13:12:06,513 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-20 13:12:06,514 INFO L168 Benchmark]: Toolchain (without parser) took 191550.71 ms. Allocated memory was 136.3 MB in the beginning and 2.2 GB in the end (delta: 2.0 GB). Free memory was 101.2 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 898.1 MB. Max. memory is 7.1 GB.
[2020-07-20 13:12:06,515 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB.
[2020-07-20 13:12:06,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.57 ms. Allocated memory is still 136.3 MB. Free memory was 100.8 MB in the beginning and 91.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB.
[2020-07-20 13:12:06,515 INFO L168 Benchmark]: Boogie Preprocessor took 22.90 ms. Allocated memory is still 136.3 MB. Free memory was 91.0 MB in the beginning and 89.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB.
[2020-07-20 13:12:06,516 INFO L168 Benchmark]: RCFGBuilder took 334.36 ms. Allocated memory was 136.3 MB in the beginning and 199.2 MB in the end (delta: 62.9 MB). Free memory was 89.6 MB in the beginning and 166.2 MB in the end (delta: -76.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB.
[2020-07-20 13:12:06,516 INFO L168 Benchmark]: TraceAbstraction took 190965.31 ms. Allocated memory was 199.2 MB in the beginning and 2.2 GB in the end (delta: 2.0 GB). Free memory was 165.5 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 899.5 MB. Max. memory is 7.1 GB.
[2020-07-20 13:12:06,517 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.23 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 221.57 ms. Allocated memory is still 136.3 MB. Free memory was 100.8 MB in the beginning and 91.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 22.90 ms. Allocated memory is still 136.3 MB. Free memory was 91.0 MB in the beginning and 89.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 334.36 ms. Allocated memory was 136.3 MB in the beginning and 199.2 MB in the end (delta: 62.9 MB). Free memory was 89.6 MB in the beginning and 166.2 MB in the end (delta: -76.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 190965.31 ms. Allocated memory was 199.2 MB in the beginning and 2.2 GB in the end (delta: 2.0 GB). Free memory was 165.5 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 899.5 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 34]: call of __VERIFIER_error() unreachable
For all program executions holds that call of __VERIFIER_error() unreachable at this location
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 187.5s, OverallIterations: 11, TraceHistogramMax: 263, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 268 SDtfs, 1170 SDslu, 1483 SDs, 0 SdLazy, 1730 SolverSat, 2046 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13272 GetRequests, 12715 SyntacticMatches, 274 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5575 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 133 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 176 PreInvPairs, 290 NumberOfFragments, 116 HoareAnnotationTreeSize, 176 FomulaSimplifications, 7523 FormulaSimplificationTreeSizeReduction, 0.8s HoareSimplificationTime, 8 FomulaSimplificationsInter, 2088 FormulaSimplificationTreeSizeReductionInter, 2.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 176.1s InterpolantComputationTime, 6603 NumberOfCodeBlocks, 5154 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 13157 ConstructedInterpolants, 0 QuantifiedInterpolants, 19743197 SizeOfPredicates, 76 NumberOfNonLiveVariables, 12306 ConjunctsInSsa, 356 ConjunctsInUnsatCore, 20 InterpolantComputations, 2 PerfectInterpolantSequences, 901241/965608 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be correct!
Received shutdown request...