/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_VARIABLES --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-simple/fibo_2calls_2-1.c
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This is Ultimate 0.1.25-d623d84
[2020-07-20 16:45:09,373 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-07-20 16:45:09,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-20 16:45:09,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-20 16:45:09,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-20 16:45:09,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-20 16:45:09,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-20 16:45:09,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-20 16:45:09,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-20 16:45:09,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-20 16:45:09,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-07-20 16:45:09,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-20 16:45:09,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-20 16:45:09,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-20 16:45:09,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-20 16:45:09,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-20 16:45:09,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-20 16:45:09,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-20 16:45:09,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-20 16:45:09,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-20 16:45:09,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-20 16:45:09,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-20 16:45:09,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-07-20 16:45:09,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-20 16:45:09,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-20 16:45:09,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-20 16:45:09,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-20 16:45:09,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-20 16:45:09,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-20 16:45:09,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-20 16:45:09,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-20 16:45:09,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-20 16:45:09,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-20 16:45:09,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-20 16:45:09,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-20 16:45:09,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-20 16:45:09,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-20 16:45:09,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-20 16:45:09,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-20 16:45:09,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-20 16:45:09,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-07-20 16:45:09,442 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 16:45:09,461 INFO L113 SettingsManager]: Loading preferences was successful
[2020-07-20 16:45:09,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-20 16:45:09,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-20 16:45:09,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-07-20 16:45:09,463 INFO L138 SettingsManager]: * Use SBE=true
[2020-07-20 16:45:09,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-20 16:45:09,463 INFO L138 SettingsManager]: * sizeof long=4
[2020-07-20 16:45:09,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-07-20 16:45:09,464 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-07-20 16:45:09,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-07-20 16:45:09,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-07-20 16:45:09,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-20 16:45:09,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-07-20 16:45:09,465 INFO L138 SettingsManager]: * sizeof long double=12
[2020-07-20 16:45:09,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-07-20 16:45:09,465 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-07-20 16:45:09,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-07-20 16:45:09,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-20 16:45:09,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-07-20 16:45:09,466 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-07-20 16:45:09,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-07-20 16:45:09,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-20 16:45:09,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-20 16:45:09,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-07-20 16:45:09,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-20 16:45:09,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-07-20 16:45:09,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 16:45:09,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-20 16:45:09,468 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-07-20 16:45:09,468 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_VARIABLES
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 16:45:09,873 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-20 16:45:09,921 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-20 16:45:09,929 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-20 16:45:09,932 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-07-20 16:45:09,932 INFO L275 PluginConnector]: CDTParser initialized
[2020-07-20 16:45:09,936 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_2-1.c
[2020-07-20 16:45:10,084 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/498bca5b1/bd0b755845f64bdab1cad53ba8b24eef/FLAG265266b0e
[2020-07-20 16:45:10,687 INFO L306 CDTParser]: Found 1 translation units.
[2020-07-20 16:45:10,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_2-1.c
[2020-07-20 16:45:10,711 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/498bca5b1/bd0b755845f64bdab1cad53ba8b24eef/FLAG265266b0e
[2020-07-20 16:45:10,961 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/498bca5b1/bd0b755845f64bdab1cad53ba8b24eef
[2020-07-20 16:45:10,979 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-20 16:45:10,983 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-20 16:45:10,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-20 16:45:10,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-20 16:45:10,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-20 16:45:10,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:45:10" (1/1) ...
[2020-07-20 16:45:10,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@509fad81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:45:10, skipping insertion in model container
[2020-07-20 16:45:10,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:45:10" (1/1) ...
[2020-07-20 16:45:11,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-07-20 16:45:11,040 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-07-20 16:45:11,297 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 16:45:11,307 INFO L203 MainTranslator]: Completed pre-run
[2020-07-20 16:45:11,331 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 16:45:11,353 INFO L208 MainTranslator]: Completed translation
[2020-07-20 16:45:11,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:45:11 WrapperNode
[2020-07-20 16:45:11,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-20 16:45:11,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-20 16:45:11,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-20 16:45:11,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-07-20 16:45:11,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:45:11" (1/1) ...
[2020-07-20 16:45:11,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:45:11" (1/1) ...
[2020-07-20 16:45:11,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:45:11" (1/1) ...
[2020-07-20 16:45:11,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:45:11" (1/1) ...
[2020-07-20 16:45:11,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:45:11" (1/1) ...
[2020-07-20 16:45:11,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:45:11" (1/1) ...
[2020-07-20 16:45:11,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:45:11" (1/1) ...
[2020-07-20 16:45:11,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-20 16:45:11,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-20 16:45:11,416 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-07-20 16:45:11,417 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-07-20 16:45:11,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:45:11" (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 16:45:11,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-20 16:45:11,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-20 16:45:11,622 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1
[2020-07-20 16:45:11,622 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2
[2020-07-20 16:45:11,622 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-07-20 16:45:11,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-07-20 16:45:11,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-20 16:45:11,622 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1
[2020-07-20 16:45:11,623 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2
[2020-07-20 16:45:11,623 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-07-20 16:45:11,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-20 16:45:11,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-20 16:45:11,920 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-20 16:45:11,921 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-07-20 16:45:11,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:45:11 BoogieIcfgContainer
[2020-07-20 16:45:11,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-20 16:45:11,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-20 16:45:11,934 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-07-20 16:45:11,942 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-07-20 16:45:11,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:45:10" (1/3) ...
[2020-07-20 16:45:11,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31bfd13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:45:11, skipping insertion in model container
[2020-07-20 16:45:11,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:45:11" (2/3) ...
[2020-07-20 16:45:11,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31bfd13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:45:11, skipping insertion in model container
[2020-07-20 16:45:11,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:45:11" (3/3) ...
[2020-07-20 16:45:11,950 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_2-1.c
[2020-07-20 16:45:11,997 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-20 16:45:12,034 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-20 16:45:12,072 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-20 16:45:12,180 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-07-20 16:45:12,180 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-07-20 16:45:12,181 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-20 16:45:12,181 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-20 16:45:12,181 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-20 16:45:12,181 INFO L380 AbstractCegarLoop]: Difference is false
[2020-07-20 16:45:12,181 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-20 16:45:12,182 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-20 16:45:12,214 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states.
[2020-07-20 16:45:12,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-07-20 16:45:12,225 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 16:45:12,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 16:45:12,227 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 16:45:12,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 16:45:12,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times
[2020-07-20 16:45:12,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 16:45:12,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632447679]
[2020-07-20 16:45:12,258 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 16:45:12,374 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 16:45:12,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 16:45:12,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core
[2020-07-20 16:45:12,383 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 16:45:12,509 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 16:45:12,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 16:45:12,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632447679]
[2020-07-20 16:45:12,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 16:45:12,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-07-20 16:45:12,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322946289]
[2020-07-20 16:45:12,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-07-20 16:45:12,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 16:45:12,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-07-20 16:45:12,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-07-20 16:45:12,540 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states.
[2020-07-20 16:45:12,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 16:45:12,723 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions.
[2020-07-20 16:45:12,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2020-07-20 16:45:12,728 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13
[2020-07-20 16:45:12,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 16:45:12,744 INFO L225 Difference]: With dead ends: 44
[2020-07-20 16:45:12,745 INFO L226 Difference]: Without dead ends: 30
[2020-07-20 16:45:12,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 16:45:12,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2020-07-20 16:45:12,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30.
[2020-07-20 16:45:12,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2020-07-20 16:45:12,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions.
[2020-07-20 16:45:12,810 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13
[2020-07-20 16:45:12,811 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 16:45:12,811 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions.
[2020-07-20 16:45:12,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-07-20 16:45:12,811 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions.
[2020-07-20 16:45:12,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-07-20 16:45:12,814 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 16:45:12,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 16:45:13,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 16:45:13,017 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 16:45:13,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 16:45:13,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times
[2020-07-20 16:45:13,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 16:45:13,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628448890]
[2020-07-20 16:45:13,019 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 16:45:13,051 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 16:45:13,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 16:45:13,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core
[2020-07-20 16:45:13,054 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 16:45:13,099 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 16:45:13,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 16:45:13,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628448890]
[2020-07-20 16:45:13,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 16:45:13,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-07-20 16:45:13,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471864045]
[2020-07-20 16:45:13,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-07-20 16:45:13,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 16:45:13,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-07-20 16:45:13,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-07-20 16:45:13,108 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states.
[2020-07-20 16:45:13,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 16:45:13,192 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions.
[2020-07-20 16:45:13,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2020-07-20 16:45:13,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14
[2020-07-20 16:45:13,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 16:45:13,196 INFO L225 Difference]: With dead ends: 36
[2020-07-20 16:45:13,196 INFO L226 Difference]: Without dead ends: 32
[2020-07-20 16:45:13,198 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 16:45:13,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2020-07-20 16:45:13,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30.
[2020-07-20 16:45:13,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2020-07-20 16:45:13,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions.
[2020-07-20 16:45:13,210 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14
[2020-07-20 16:45:13,210 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 16:45:13,210 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions.
[2020-07-20 16:45:13,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-07-20 16:45:13,211 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions.
[2020-07-20 16:45:13,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-07-20 16:45:13,212 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 16:45:13,213 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 16:45:13,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 16:45:13,429 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 16:45:13,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 16:45:13,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times
[2020-07-20 16:45:13,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 16:45:13,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592196223]
[2020-07-20 16:45:13,432 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 16:45:13,498 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 16:45:13,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 16:45:13,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core
[2020-07-20 16:45:13,502 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 16:45:13,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-07-20 16:45:13,606 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2020-07-20 16:45:13,843 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 16:45:13,850 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 16:45:13,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-07-20 16:45:13,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592196223]
[2020-07-20 16:45:13,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-20 16:45:13,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9
[2020-07-20 16:45:13,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301827263]
[2020-07-20 16:45:13,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-07-20 16:45:13,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 16:45:13,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-07-20 16:45:13,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2020-07-20 16:45:13,925 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 9 states.
[2020-07-20 16:45:14,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 16:45:14,096 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions.
[2020-07-20 16:45:14,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2020-07-20 16:45:14,097 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26
[2020-07-20 16:45:14,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 16:45:14,100 INFO L225 Difference]: With dead ends: 41
[2020-07-20 16:45:14,100 INFO L226 Difference]: Without dead ends: 37
[2020-07-20 16:45:14,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110
[2020-07-20 16:45:14,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2020-07-20 16:45:14,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35.
[2020-07-20 16:45:14,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states.
[2020-07-20 16:45:14,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions.
[2020-07-20 16:45:14,112 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 26
[2020-07-20 16:45:14,112 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 16:45:14,112 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions.
[2020-07-20 16:45:14,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-07-20 16:45:14,113 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions.
[2020-07-20 16:45:14,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-07-20 16:45:14,115 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 16:45:14,115 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 16:45:14,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 16:45:14,330 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 16:45:14,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 16:45:14,331 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times
[2020-07-20 16:45:14,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 16:45:14,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476950309]
[2020-07-20 16:45:14,333 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 16:45:14,371 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-20 16:45:14,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat
[2020-07-20 16:45:14,372 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-20 16:45:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-20 16:45:14,382 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-20 16:45:14,404 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-07-20 16:45:14,404 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-07-20 16:45:14,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 16:45:14,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 04:45:14 BoogieIcfgContainer
[2020-07-20 16:45:14,653 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-20 16:45:14,655 INFO L168 Benchmark]: Toolchain (without parser) took 3673.65 ms. Allocated memory was 143.1 MB in the beginning and 228.6 MB in the end (delta: 85.5 MB). Free memory was 101.8 MB in the beginning and 178.3 MB in the end (delta: -76.6 MB). Peak memory consumption was 8.9 MB. Max. memory is 7.1 GB.
[2020-07-20 16:45:14,656 INFO L168 Benchmark]: CDTParser took 1.85 ms. Allocated memory is still 143.1 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-07-20 16:45:14,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.95 ms. Allocated memory is still 143.1 MB. Free memory was 101.4 MB in the beginning and 91.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB.
[2020-07-20 16:45:14,658 INFO L168 Benchmark]: Boogie Preprocessor took 57.27 ms. Allocated memory is still 143.1 MB. Free memory was 91.9 MB in the beginning and 90.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB.
[2020-07-20 16:45:14,661 INFO L168 Benchmark]: RCFGBuilder took 514.75 ms. Allocated memory was 143.1 MB in the beginning and 200.3 MB in the end (delta: 57.1 MB). Free memory was 90.4 MB in the beginning and 165.8 MB in the end (delta: -75.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
[2020-07-20 16:45:14,662 INFO L168 Benchmark]: TraceAbstraction took 2719.63 ms. Allocated memory was 200.3 MB in the beginning and 228.6 MB in the end (delta: 28.3 MB). Free memory was 165.1 MB in the beginning and 178.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB.
[2020-07-20 16:45:14,666 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 1.85 ms. Allocated memory is still 143.1 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 368.95 ms. Allocated memory is still 143.1 MB. Free memory was 101.4 MB in the beginning and 91.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 57.27 ms. Allocated memory is still 143.1 MB. Free memory was 91.9 MB in the beginning and 90.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 514.75 ms. Allocated memory was 143.1 MB in the beginning and 200.3 MB in the end (delta: 57.1 MB). Free memory was 90.4 MB in the beginning and 165.8 MB in the end (delta: -75.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 2719.63 ms. Allocated memory was 200.3 MB in the beginning and 228.6 MB in the end (delta: 28.3 MB). Free memory was 165.1 MB in the beginning and 178.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 39]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L36] int x = 2;
VAL [x=2]
[L37] CALL, EXPR fibo1(x)
VAL [\old(n)=2]
[L8] COND FALSE !(n < 1)
VAL [\old(n)=2, n=2]
[L10] COND FALSE !(n == 1)
VAL [\old(n)=2, n=2]
[L13] CALL, EXPR fibo2(n-1)
VAL [\old(n)=1]
[L18] COND FALSE !(n < 1)
VAL [\old(n)=1, n=1]
[L20] COND TRUE n == 1
[L21] return 1;
VAL [\old(n)=1, \result=1, n=1]
[L13] RET, EXPR fibo2(n-1)
VAL [\old(n)=2, fibo2(n-1)=1, n=2]
[L13] CALL, EXPR fibo2(n-2)
VAL [\old(n)=0]
[L18] COND TRUE n < 1
[L19] return 0;
VAL [\old(n)=0, \result=0, n=0]
[L13] RET, EXPR fibo2(n-2)
VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2]
[L13] return fibo2(n-1) + fibo2(n-2);
[L37] RET, EXPR fibo1(x)
VAL [fibo1(x)=1, x=2]
[L37] int result = fibo1(x);
[L38] COND TRUE result == 1
VAL [result=1, x=2]
[L39] __VERIFIER_error()
VAL [result=1, x=2]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 80 SDtfs, 51 SDslu, 203 SDs, 0 SdLazy, 129 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 58 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 80 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 3389 SizeOfPredicates, 7 NumberOfNonLiveVariables, 113 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 2/8 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 incorrect!
Received shutdown request...