/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 DAGSIZE --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/id_b5_o10-2.c
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This is Ultimate 0.1.25-d623d84
[2020-07-20 21:36:51,970 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-07-20 21:36:51,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-20 21:36:51,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-20 21:36:51,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-20 21:36:52,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-20 21:36:52,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-20 21:36:52,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-20 21:36:52,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-20 21:36:52,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-20 21:36:52,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-07-20 21:36:52,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-20 21:36:52,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-20 21:36:52,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-20 21:36:52,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-20 21:36:52,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-20 21:36:52,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-20 21:36:52,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-20 21:36:52,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-20 21:36:52,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-20 21:36:52,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-20 21:36:52,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-20 21:36:52,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-07-20 21:36:52,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-20 21:36:52,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-20 21:36:52,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-20 21:36:52,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-20 21:36:52,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-20 21:36:52,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-20 21:36:52,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-20 21:36:52,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-20 21:36:52,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-20 21:36:52,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-20 21:36:52,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-20 21:36:52,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-20 21:36:52,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-20 21:36:52,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-20 21:36:52,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-20 21:36:52,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-20 21:36:52,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-20 21:36:52,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-07-20 21:36:52,063 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 21:36:52,079 INFO L113 SettingsManager]: Loading preferences was successful
[2020-07-20 21:36:52,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-20 21:36:52,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-20 21:36:52,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-07-20 21:36:52,081 INFO L138 SettingsManager]: * Use SBE=true
[2020-07-20 21:36:52,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-20 21:36:52,082 INFO L138 SettingsManager]: * sizeof long=4
[2020-07-20 21:36:52,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-07-20 21:36:52,082 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-07-20 21:36:52,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-07-20 21:36:52,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-07-20 21:36:52,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-20 21:36:52,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-07-20 21:36:52,083 INFO L138 SettingsManager]: * sizeof long double=12
[2020-07-20 21:36:52,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-07-20 21:36:52,084 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-07-20 21:36:52,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-07-20 21:36:52,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-20 21:36:52,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-07-20 21:36:52,085 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-07-20 21:36:52,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-07-20 21:36:52,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-20 21:36:52,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-20 21:36:52,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-07-20 21:36:52,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-20 21:36:52,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-07-20 21:36:52,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:36:52,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-20 21:36:52,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-07-20 21:36:52,087 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 -> DAGSIZE
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 21:36:52,423 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-20 21:36:52,442 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-20 21:36:52,448 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-20 21:36:52,450 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-07-20 21:36:52,451 INFO L275 PluginConnector]: CDTParser initialized
[2020-07-20 21:36:52,452 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c
[2020-07-20 21:36:52,539 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ed95d072/1cacce7556e7483d8ef71486a1fbe0c1/FLAGb89024075
[2020-07-20 21:36:53,081 INFO L306 CDTParser]: Found 1 translation units.
[2020-07-20 21:36:53,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c
[2020-07-20 21:36:53,090 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ed95d072/1cacce7556e7483d8ef71486a1fbe0c1/FLAGb89024075
[2020-07-20 21:36:53,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ed95d072/1cacce7556e7483d8ef71486a1fbe0c1
[2020-07-20 21:36:53,433 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-20 21:36:53,438 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-20 21:36:53,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-20 21:36:53,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-20 21:36:53,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-20 21:36:53,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:36:53" (1/1) ...
[2020-07-20 21:36:53,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a462c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:36:53, skipping insertion in model container
[2020-07-20 21:36:53,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:36:53" (1/1) ...
[2020-07-20 21:36:53,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-07-20 21:36:53,482 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-07-20 21:36:53,697 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 21:36:53,702 INFO L203 MainTranslator]: Completed pre-run
[2020-07-20 21:36:53,721 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 21:36:53,740 INFO L208 MainTranslator]: Completed translation
[2020-07-20 21:36:53,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:36:53 WrapperNode
[2020-07-20 21:36:53,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-20 21:36:53,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-20 21:36:53,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-20 21:36:53,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-07-20 21:36:53,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:36:53" (1/1) ...
[2020-07-20 21:36:53,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:36:53" (1/1) ...
[2020-07-20 21:36:53,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:36:53" (1/1) ...
[2020-07-20 21:36:53,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:36:53" (1/1) ...
[2020-07-20 21:36:53,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:36:53" (1/1) ...
[2020-07-20 21:36:53,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:36:53" (1/1) ...
[2020-07-20 21:36:53,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:36:53" (1/1) ...
[2020-07-20 21:36:53,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-20 21:36:53,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-20 21:36:53,781 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-07-20 21:36:53,781 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-07-20 21:36:53,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:36:53" (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 21:36:53,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-20 21:36:53,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-20 21:36:53,966 INFO L138 BoogieDeclarations]: Found implementation of procedure id
[2020-07-20 21:36:53,966 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-07-20 21:36:53,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-07-20 21:36:53,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-20 21:36:53,968 INFO L130 BoogieDeclarations]: Found specification of procedure id
[2020-07-20 21:36:53,968 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-07-20 21:36:53,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-20 21:36:53,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-20 21:36:54,186 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-20 21:36:54,187 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-07-20 21:36:54,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:36:54 BoogieIcfgContainer
[2020-07-20 21:36:54,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-20 21:36:54,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-20 21:36:54,194 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-07-20 21:36:54,198 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-07-20 21:36:54,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:36:53" (1/3) ...
[2020-07-20 21:36:54,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19032c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:36:54, skipping insertion in model container
[2020-07-20 21:36:54,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:36:53" (2/3) ...
[2020-07-20 21:36:54,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19032c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:36:54, skipping insertion in model container
[2020-07-20 21:36:54,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:36:54" (3/3) ...
[2020-07-20 21:36:54,203 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b5_o10-2.c
[2020-07-20 21:36:54,217 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-20 21:36:54,227 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-20 21:36:54,245 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-20 21:36:54,276 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-07-20 21:36:54,276 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-07-20 21:36:54,277 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-20 21:36:54,277 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-20 21:36:54,277 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-20 21:36:54,277 INFO L380 AbstractCegarLoop]: Difference is false
[2020-07-20 21:36:54,277 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-20 21:36:54,278 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-20 21:36:54,303 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states.
[2020-07-20 21:36:54,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-07-20 21:36:54,311 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 21:36:54,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 21:36:54,314 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 21:36:54,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 21:36:54,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1250208381, now seen corresponding path program 1 times
[2020-07-20 21:36:54,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 21:36:54,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967793722]
[2020-07-20 21:36:54,329 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 21:36:54,410 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-20 21:36:54,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 21:36:54,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core
[2020-07-20 21:36:54,420 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 21:36:54,521 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 21:36:54,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 21:36:54,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967793722]
[2020-07-20 21:36:54,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 21:36:54,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-07-20 21:36:54,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207250466]
[2020-07-20 21:36:54,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-07-20 21:36:54,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 21:36:54,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-07-20 21:36:54,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-07-20 21:36:54,565 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states.
[2020-07-20 21:36:54,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 21:36:54,650 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions.
[2020-07-20 21:36:54,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2020-07-20 21:36:54,652 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13
[2020-07-20 21:36:54,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 21:36:54,665 INFO L225 Difference]: With dead ends: 33
[2020-07-20 21:36:54,666 INFO L226 Difference]: Without dead ends: 19
[2020-07-20 21:36:54,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-07-20 21:36:54,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2020-07-20 21:36:54,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19.
[2020-07-20 21:36:54,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states.
[2020-07-20 21:36:54,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions.
[2020-07-20 21:36:54,729 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 13
[2020-07-20 21:36:54,730 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 21:36:54,730 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions.
[2020-07-20 21:36:54,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-07-20 21:36:54,731 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions.
[2020-07-20 21:36:54,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-07-20 21:36:54,734 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 21:36:54,734 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 21:36:54,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:36:54,949 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 21:36:54,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 21:36:54,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1951994857, now seen corresponding path program 1 times
[2020-07-20 21:36:54,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 21:36:54,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976420491]
[2020-07-20 21:36:54,953 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 21:36:55,012 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 21:36:55,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 21:36:55,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core
[2020-07-20 21:36:55,017 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 21:36:55,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2020-07-20 21:36:55,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 21:36:55,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976420491]
[2020-07-20 21:36:55,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 21:36:55,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-07-20 21:36:55,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120867809]
[2020-07-20 21:36:55,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-07-20 21:36:55,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 21:36:55,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-07-20 21:36:55,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-07-20 21:36:55,060 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states.
[2020-07-20 21:36:55,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 21:36:55,090 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions.
[2020-07-20 21:36:55,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2020-07-20 21:36:55,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20
[2020-07-20 21:36:55,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 21:36:55,093 INFO L225 Difference]: With dead ends: 31
[2020-07-20 21:36:55,093 INFO L226 Difference]: Without dead ends: 23
[2020-07-20 21:36:55,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-07-20 21:36:55,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2020-07-20 21:36:55,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21.
[2020-07-20 21:36:55,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states.
[2020-07-20 21:36:55,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions.
[2020-07-20 21:36:55,108 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 20
[2020-07-20 21:36:55,108 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 21:36:55,109 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions.
[2020-07-20 21:36:55,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-07-20 21:36:55,109 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions.
[2020-07-20 21:36:55,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-07-20 21:36:55,112 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 21:36:55,113 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 21:36:55,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:36:55,314 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 21:36:55,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 21:36:55,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1923365706, now seen corresponding path program 1 times
[2020-07-20 21:36:55,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 21:36:55,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237510583]
[2020-07-20 21:36:55,317 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 21:36:55,366 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 21:36:55,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 21:36:55,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core
[2020-07-20 21:36:55,370 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 21:36:55,457 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2020-07-20 21:36:55,458 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2020-07-20 21:36:55,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2020-07-20 21:36:55,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237510583]
[2020-07-20 21:36:55,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-20 21:36:55,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14
[2020-07-20 21:36:55,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596514643]
[2020-07-20 21:36:55,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-07-20 21:36:55,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 21:36:55,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-07-20 21:36:55,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182
[2020-07-20 21:36:55,776 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 14 states.
[2020-07-20 21:36:55,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 21:36:55,951 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions.
[2020-07-20 21:36:55,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2020-07-20 21:36:55,953 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 20
[2020-07-20 21:36:55,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 21:36:55,954 INFO L225 Difference]: With dead ends: 25
[2020-07-20 21:36:55,954 INFO L226 Difference]: Without dead ends: 0
[2020-07-20 21:36:55,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240
[2020-07-20 21:36:55,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-07-20 21:36:55,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-07-20 21:36:55,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-07-20 21:36:55,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-07-20 21:36:55,959 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20
[2020-07-20 21:36:55,959 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 21:36:55,959 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-07-20 21:36:55,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-07-20 21:36:55,960 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-07-20 21:36:55,960 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-07-20 21:36:56,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:36:56,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-07-20 21:36:56,254 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2020-07-20 21:36:56,255 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-07-20 21:36:56,255 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-07-20 21:36:56,255 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-07-20 21:36:56,255 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-07-20 21:36:56,256 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-07-20 21:36:56,256 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed.
[2020-07-20 21:36:56,256 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true
[2020-07-20 21:36:56,256 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 17) no Hoare annotation was computed.
[2020-07-20 21:36:56,256 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed.
[2020-07-20 21:36:56,257 INFO L268 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed.
[2020-07-20 21:36:56,257 INFO L271 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: true
[2020-07-20 21:36:56,257 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed.
[2020-07-20 21:36:56,257 INFO L268 CegarLoopResult]: For program point L14-2(lines 11 17) no Hoare annotation was computed.
[2020-07-20 21:36:56,257 INFO L268 CegarLoopResult]: For program point idFINAL(lines 4 9) no Hoare annotation was computed.
[2020-07-20 21:36:56,258 INFO L268 CegarLoopResult]: For program point idEXIT(lines 4 9) no Hoare annotation was computed.
[2020-07-20 21:36:56,258 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 9) the Hoare annotation is: true
[2020-07-20 21:36:56,258 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed.
[2020-07-20 21:36:56,258 INFO L271 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: true
[2020-07-20 21:36:56,258 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed.
[2020-07-20 21:36:56,258 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed.
[2020-07-20 21:36:56,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 09:36:56 BoogieIcfgContainer
[2020-07-20 21:36:56,267 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-20 21:36:56,271 INFO L168 Benchmark]: Toolchain (without parser) took 2834.24 ms. Allocated memory was 138.4 MB in the beginning and 234.9 MB in the end (delta: 96.5 MB). Free memory was 103.0 MB in the beginning and 203.3 MB in the end (delta: -100.3 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB.
[2020-07-20 21:36:56,272 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB.
[2020-07-20 21:36:56,273 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.67 ms. Allocated memory is still 138.4 MB. Free memory was 102.5 MB in the beginning and 92.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB.
[2020-07-20 21:36:56,274 INFO L168 Benchmark]: Boogie Preprocessor took 37.65 ms. Allocated memory is still 138.4 MB. Free memory was 92.9 MB in the beginning and 91.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB.
[2020-07-20 21:36:56,275 INFO L168 Benchmark]: RCFGBuilder took 411.80 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 91.5 MB in the beginning and 169.8 MB in the end (delta: -78.3 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB.
[2020-07-20 21:36:56,276 INFO L168 Benchmark]: TraceAbstraction took 2073.51 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 169.1 MB in the beginning and 203.3 MB in the end (delta: -34.2 MB). Peak memory consumption was 86.9 MB. Max. memory is 7.1 GB.
[2020-07-20 21:36:56,280 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.33 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 302.67 ms. Allocated memory is still 138.4 MB. Free memory was 102.5 MB in the beginning and 92.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 37.65 ms. Allocated memory is still 138.4 MB. Free memory was 92.9 MB in the beginning and 91.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 411.80 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 91.5 MB in the beginning and 169.8 MB in the end (delta: -78.3 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 2073.51 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 169.1 MB in the beginning and 203.3 MB in the end (delta: -34.2 MB). Peak memory consumption was 86.9 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 15]: 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, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 9 SDslu, 236 SDs, 0 SdLazy, 58 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 53 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 2083 SizeOfPredicates, 4 NumberOfNonLiveVariables, 115 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 8/12 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...