./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-divine/condvar.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-divine/condvar.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d16741ac57914c34248ac4b60573c9c4b90df3cc .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 03:12:04,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:12:04,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:12:04,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:12:04,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:12:04,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:12:04,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:12:04,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:12:04,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:12:04,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:12:04,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:12:04,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:12:04,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:12:04,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:12:04,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:12:04,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:12:04,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:12:04,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:12:04,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:12:04,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:12:04,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:12:04,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:12:04,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:12:04,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:12:04,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:12:04,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:12:04,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:12:04,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:12:04,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:12:04,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:12:04,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:12:04,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:12:04,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:12:04,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:12:04,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:12:04,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:12:04,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:12:04,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:12:04,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:12:04,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:12:04,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:12:04,675 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:12:04,718 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:12:04,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:12:04,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:12:04,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:12:04,721 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:12:04,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:12:04,722 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:12:04,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:12:04,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:12:04,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:12:04,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:12:04,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:12:04,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:12:04,724 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:12:04,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:12:04,725 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:12:04,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:12:04,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:12:04,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:12:04,726 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:12:04,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:12:04,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:12:04,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:12:04,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:12:04,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:12:04,728 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:12:04,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:12:04,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:12:04,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:12:04,728 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d16741ac57914c34248ac4b60573c9c4b90df3cc [2020-10-20 03:12:04,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:12:04,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:12:04,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:12:04,961 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:12:04,962 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:12:04,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/condvar.i [2020-10-20 03:12:05,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1076d504/2c1893ecc52b49b88bc8ca3e4a1cd2c5/FLAGd4e5f6cc4 [2020-10-20 03:12:05,605 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:12:05,606 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/condvar.i [2020-10-20 03:12:05,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1076d504/2c1893ecc52b49b88bc8ca3e4a1cd2c5/FLAGd4e5f6cc4 [2020-10-20 03:12:05,910 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1076d504/2c1893ecc52b49b88bc8ca3e4a1cd2c5 [2020-10-20 03:12:05,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:12:05,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:12:05,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:12:05,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:12:05,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:12:05,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:12:05" (1/1) ... [2020-10-20 03:12:05,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25983ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:12:05, skipping insertion in model container [2020-10-20 03:12:05,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:12:05" (1/1) ... [2020-10-20 03:12:05,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:12:06,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:12:06,160 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-20 03:12:06,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:12:06,431 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:12:06,452 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-20 03:12:06,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:12:06,611 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:12:06,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:12:06 WrapperNode [2020-10-20 03:12:06,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:12:06,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:12:06,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:12:06,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:12:06,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:12:06" (1/1) ... [2020-10-20 03:12:06,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:12:06" (1/1) ... [2020-10-20 03:12:06,676 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:12:06,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:12:06,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:12:06,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:12:06,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:12:06" (1/1) ... [2020-10-20 03:12:06,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:12:06" (1/1) ... [2020-10-20 03:12:06,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:12:06" (1/1) ... [2020-10-20 03:12:06,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:12:06" (1/1) ... [2020-10-20 03:12:06,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:12:06" (1/1) ... [2020-10-20 03:12:06,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:12:06" (1/1) ... [2020-10-20 03:12:06,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:12:06" (1/1) ... [2020-10-20 03:12:06,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:12:06,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:12:06,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:12:06,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:12:06,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:12:06" (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 [2020-10-20 03:12:06,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 03:12:06,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:12:06,801 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-20 03:12:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:12:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:12:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:12:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2020-10-20 03:12:06,803 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2020-10-20 03:12:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:12:06,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:12:06,805 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-20 03:12:07,228 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:12:07,229 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-20 03:12:07,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:12:07 BoogieIcfgContainer [2020-10-20 03:12:07,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:12:07,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:12:07,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:12:07,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:12:07,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:12:05" (1/3) ... [2020-10-20 03:12:07,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a4af1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:12:07, skipping insertion in model container [2020-10-20 03:12:07,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:12:06" (2/3) ... [2020-10-20 03:12:07,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a4af1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:12:07, skipping insertion in model container [2020-10-20 03:12:07,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:12:07" (3/3) ... [2020-10-20 03:12:07,247 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar.i [2020-10-20 03:12:07,259 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:12:07,260 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:12:07,268 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:12:07,269 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:12:07,294 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:07,295 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:07,295 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:07,295 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:07,296 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:07,296 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:07,297 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_reach_error_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:07,297 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_reach_error_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:07,297 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:07,298 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:07,298 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:07,298 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:07,299 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_reach_error_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:07,299 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_reach_error_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:07,303 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_reach_error_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:07,303 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:07,304 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:07,304 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:07,304 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:07,304 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_reach_error_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:07,305 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:07,305 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:07,313 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-10-20 03:12:07,327 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 03:12:07,359 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:12:07,359 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:12:07,359 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:12:07,359 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:12:07,359 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:12:07,359 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:12:07,360 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:12:07,360 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:12:07,372 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:12:07,375 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 73 transitions, 154 flow [2020-10-20 03:12:07,378 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 73 transitions, 154 flow [2020-10-20 03:12:07,380 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 71 places, 73 transitions, 154 flow [2020-10-20 03:12:07,423 INFO L129 PetriNetUnfolder]: 6/72 cut-off events. [2020-10-20 03:12:07,423 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-20 03:12:07,427 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 72 events. 6/72 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 64 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 31. Up to 3 conditions per place. [2020-10-20 03:12:07,429 INFO L117 LiptonReduction]: Number of co-enabled transitions 440 [2020-10-20 03:12:09,293 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-20 03:12:09,429 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-20 03:12:10,047 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 150 [2020-10-20 03:12:10,313 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-20 03:12:10,320 INFO L132 LiptonReduction]: Checked pairs total: 453 [2020-10-20 03:12:10,321 INFO L134 LiptonReduction]: Total number of compositions: 71 [2020-10-20 03:12:10,327 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 14 places, 12 transitions, 32 flow [2020-10-20 03:12:10,334 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 16 states. [2020-10-20 03:12:10,335 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-10-20 03:12:10,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-20 03:12:10,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:12:10,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-20 03:12:10,343 INFO L429 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:12:10,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:12:10,349 INFO L82 PathProgramCache]: Analyzing trace with hash 9010901, now seen corresponding path program 1 times [2020-10-20 03:12:10,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:12:10,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890366231] [2020-10-20 03:12:10,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:12:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:12:10,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:12:10,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890366231] [2020-10-20 03:12:10,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:12:10,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 03:12:10,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446871977] [2020-10-20 03:12:10,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:12:10,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:12:10,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:12:10,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:12:10,585 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-10-20 03:12:10,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:12:10,610 INFO L93 Difference]: Finished difference Result 12 states and 18 transitions. [2020-10-20 03:12:10,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:12:10,612 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-20 03:12:10,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:12:10,623 INFO L225 Difference]: With dead ends: 12 [2020-10-20 03:12:10,623 INFO L226 Difference]: Without dead ends: 9 [2020-10-20 03:12:10,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:12:10,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-10-20 03:12:10,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-10-20 03:12:10,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-20 03:12:10,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 15 transitions. [2020-10-20 03:12:10,659 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 15 transitions. Word has length 4 [2020-10-20 03:12:10,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:12:10,660 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 15 transitions. [2020-10-20 03:12:10,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:12:10,660 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 15 transitions. [2020-10-20 03:12:10,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 03:12:10,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:12:10,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 03:12:10,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:12:10,662 INFO L429 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:12:10,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:12:10,662 INFO L82 PathProgramCache]: Analyzing trace with hash 69514399, now seen corresponding path program 1 times [2020-10-20 03:12:10,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:12:10,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453987155] [2020-10-20 03:12:10,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:12:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:12:10,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:12:10,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453987155] [2020-10-20 03:12:10,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:12:10,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:12:10,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920786945] [2020-10-20 03:12:10,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:12:10,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:12:10,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:12:10,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:12:10,737 INFO L87 Difference]: Start difference. First operand 9 states and 15 transitions. Second operand 3 states. [2020-10-20 03:12:10,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:12:10,757 INFO L93 Difference]: Finished difference Result 11 states and 19 transitions. [2020-10-20 03:12:10,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:12:10,757 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-20 03:12:10,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:12:10,758 INFO L225 Difference]: With dead ends: 11 [2020-10-20 03:12:10,758 INFO L226 Difference]: Without dead ends: 11 [2020-10-20 03:12:10,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:12:10,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-20 03:12:10,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-20 03:12:10,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-20 03:12:10,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 19 transitions. [2020-10-20 03:12:10,762 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 19 transitions. Word has length 6 [2020-10-20 03:12:10,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:12:10,763 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 19 transitions. [2020-10-20 03:12:10,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:12:10,763 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 19 transitions. [2020-10-20 03:12:10,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 03:12:10,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:12:10,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:12:10,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:12:10,764 INFO L429 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:12:10,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:12:10,765 INFO L82 PathProgramCache]: Analyzing trace with hash -2140011496, now seen corresponding path program 1 times [2020-10-20 03:12:10,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:12:10,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894997685] [2020-10-20 03:12:10,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:12:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:12:10,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:12:10,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894997685] [2020-10-20 03:12:10,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675053132] [2020-10-20 03:12:10,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 03:12:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:12:10,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 03:12:10,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 03:12:10,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:12:10,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 03:12:10,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-20 03:12:10,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41865969] [2020-10-20 03:12:10,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:12:10,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:12:10,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:12:10,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:12:10,933 INFO L87 Difference]: Start difference. First operand 11 states and 19 transitions. Second operand 5 states. [2020-10-20 03:12:10,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:12:10,955 INFO L93 Difference]: Finished difference Result 13 states and 23 transitions. [2020-10-20 03:12:10,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:12:10,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-20 03:12:10,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:12:10,957 INFO L225 Difference]: With dead ends: 13 [2020-10-20 03:12:10,957 INFO L226 Difference]: Without dead ends: 13 [2020-10-20 03:12:10,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:12:10,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-20 03:12:10,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-10-20 03:12:10,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-20 03:12:10,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 23 transitions. [2020-10-20 03:12:10,961 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 23 transitions. Word has length 7 [2020-10-20 03:12:10,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:12:10,961 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 23 transitions. [2020-10-20 03:12:10,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:12:10,962 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 23 transitions. [2020-10-20 03:12:10,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 03:12:10,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:12:10,962 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-20 03:12:11,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-20 03:12:11,172 INFO L429 AbstractCegarLoop]: === Iteration 4 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:12:11,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:12:11,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1915837505, now seen corresponding path program 2 times [2020-10-20 03:12:11,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:12:11,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084254389] [2020-10-20 03:12:11,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:12:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:12:11,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:12:11,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084254389] [2020-10-20 03:12:11,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107351622] [2020-10-20 03:12:11,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 03:12:11,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 03:12:11,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 03:12:11,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 03:12:11,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 03:12:11,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:12:11,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 03:12:11,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-20 03:12:11,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370866243] [2020-10-20 03:12:11,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 03:12:11,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:12:11,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 03:12:11,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:12:11,332 INFO L87 Difference]: Start difference. First operand 13 states and 23 transitions. Second operand 6 states. [2020-10-20 03:12:11,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:12:11,352 INFO L93 Difference]: Finished difference Result 15 states and 27 transitions. [2020-10-20 03:12:11,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:12:11,353 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-10-20 03:12:11,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:12:11,353 INFO L225 Difference]: With dead ends: 15 [2020-10-20 03:12:11,354 INFO L226 Difference]: Without dead ends: 15 [2020-10-20 03:12:11,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:12:11,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-20 03:12:11,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-20 03:12:11,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-20 03:12:11,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 27 transitions. [2020-10-20 03:12:11,358 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 27 transitions. Word has length 8 [2020-10-20 03:12:11,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:12:11,358 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 27 transitions. [2020-10-20 03:12:11,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 03:12:11,358 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 27 transitions. [2020-10-20 03:12:11,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 03:12:11,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:12:11,359 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2020-10-20 03:12:11,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 03:12:11,569 INFO L429 AbstractCegarLoop]: === Iteration 5 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:12:11,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:12:11,570 INFO L82 PathProgramCache]: Analyzing trace with hash 738588920, now seen corresponding path program 3 times [2020-10-20 03:12:11,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:12:11,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664883814] [2020-10-20 03:12:11,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:12:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:12:11,655 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:12:11,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664883814] [2020-10-20 03:12:11,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963870275] [2020-10-20 03:12:11,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 03:12:11,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-20 03:12:11,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 03:12:11,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 03:12:11,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 03:12:11,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-20 03:12:11,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 03:12:11,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2020-10-20 03:12:11,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813079296] [2020-10-20 03:12:11,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:12:11,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:12:11,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:12:11,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-20 03:12:11,739 INFO L87 Difference]: Start difference. First operand 15 states and 27 transitions. Second operand 4 states. [2020-10-20 03:12:11,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:12:11,765 INFO L93 Difference]: Finished difference Result 14 states and 26 transitions. [2020-10-20 03:12:11,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:12:11,765 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-20 03:12:11,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:12:11,766 INFO L225 Difference]: With dead ends: 14 [2020-10-20 03:12:11,766 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:12:11,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-20 03:12:11,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:12:11,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:12:11,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:12:11,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:12:11,767 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-10-20 03:12:11,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:12:11,767 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:12:11,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:12:11,768 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:12:11,768 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:12:11,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 03:12:11,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:12:11 BasicIcfg [2020-10-20 03:12:11,973 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:12:11,973 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:12:11,973 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:12:11,974 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:12:11,974 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:12:07" (3/4) ... [2020-10-20 03:12:11,977 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:12:11,984 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread [2020-10-20 03:12:11,988 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-10-20 03:12:11,989 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-10-20 03:12:11,989 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-20 03:12:11,989 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:12:12,030 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:12:12,031 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:12:12,032 INFO L168 Benchmark]: Toolchain (without parser) took 6117.64 ms. Allocated memory was 40.4 MB in the beginning and 68.2 MB in the end (delta: 27.8 MB). Free memory was 16.9 MB in the beginning and 8.9 MB in the end (delta: 8.0 MB). Peak memory consumption was 35.8 MB. Max. memory is 14.3 GB. [2020-10-20 03:12:12,033 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 30.9 MB. Free memory was 7.0 MB in the beginning and 7.0 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-20 03:12:12,034 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.45 ms. Allocated memory was 40.4 MB in the beginning and 43.0 MB in the end (delta: 2.6 MB). Free memory was 16.0 MB in the beginning and 10.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 8.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:12:12,035 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.77 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 10.7 MB in the beginning and 27.3 MB in the end (delta: -16.6 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-20 03:12:12,035 INFO L168 Benchmark]: Boogie Preprocessor took 51.91 ms. Allocated memory is still 43.5 MB. Free memory was 27.3 MB in the beginning and 25.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 03:12:12,036 INFO L168 Benchmark]: RCFGBuilder took 505.20 ms. Allocated memory was 43.5 MB in the beginning and 44.6 MB in the end (delta: 1.0 MB). Free memory was 25.4 MB in the beginning and 16.7 MB in the end (delta: 8.7 MB). Peak memory consumption was 15.5 MB. Max. memory is 14.3 GB. [2020-10-20 03:12:12,037 INFO L168 Benchmark]: TraceAbstraction took 4738.24 ms. Allocated memory was 44.6 MB in the beginning and 68.2 MB in the end (delta: 23.6 MB). Free memory was 16.1 MB in the beginning and 12.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 27.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:12:12,037 INFO L168 Benchmark]: Witness Printer took 57.34 ms. Allocated memory is still 68.2 MB. Free memory was 12.1 MB in the beginning and 8.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. [2020-10-20 03:12:12,042 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 30.9 MB. Free memory was 7.0 MB in the beginning and 7.0 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 691.45 ms. Allocated memory was 40.4 MB in the beginning and 43.0 MB in the end (delta: 2.6 MB). Free memory was 16.0 MB in the beginning and 10.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 8.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 61.77 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 10.7 MB in the beginning and 27.3 MB in the end (delta: -16.6 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 51.91 ms. Allocated memory is still 43.5 MB. Free memory was 27.3 MB in the beginning and 25.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 505.20 ms. Allocated memory was 43.5 MB in the beginning and 44.6 MB in the end (delta: 1.0 MB). Free memory was 25.4 MB in the beginning and 16.7 MB in the end (delta: 8.7 MB). Peak memory consumption was 15.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4738.24 ms. Allocated memory was 44.6 MB in the beginning and 68.2 MB in the end (delta: 23.6 MB). Free memory was 16.1 MB in the beginning and 12.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 27.6 MB. Max. memory is 14.3 GB. * Witness Printer took 57.34 ms. Allocated memory is still 68.2 MB. Free memory was 12.1 MB in the beginning and 8.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 318 VarBasedMoverChecksPositive, 16 VarBasedMoverChecksNegative, 3 SemBasedMoverChecksPositive, 13 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 6 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.9s, 71 PlacesBefore, 14 PlacesAfterwards, 73 TransitionsBefore, 12 TransitionsAfterwards, 440 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 4 ChoiceCompositions, 71 TotalNumberOfCompositions, 453 MoverChecksTotal - PositiveResult [Line: 696]: 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 2 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.6s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 47 SDtfs, 24 SDslu, 40 SDs, 0 SdLazy, 32 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 58 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 668 SizeOfPredicates, 3 NumberOfNonLiveVariables, 334 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 6/20 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...