./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/17_szymanski.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-ext/17_szymanski.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 9c051ca3a402db468e0ce05dfc38d0dfe3d0c9a7 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 02:46:59,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 02:46:59,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 02:46:59,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 02:46:59,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 02:46:59,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 02:46:59,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 02:46:59,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 02:46:59,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 02:46:59,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 02:46:59,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 02:46:59,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 02:46:59,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 02:46:59,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 02:46:59,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 02:46:59,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 02:46:59,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 02:46:59,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 02:47:00,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 02:47:00,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 02:47:00,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 02:47:00,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 02:47:00,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 02:47:00,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 02:47:00,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 02:47:00,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 02:47:00,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 02:47:00,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 02:47:00,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 02:47:00,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 02:47:00,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 02:47:00,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 02:47:00,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 02:47:00,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 02:47:00,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 02:47:00,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 02:47:00,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 02:47:00,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 02:47:00,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 02:47:00,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 02:47:00,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 02:47:00,025 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 02:47:00,055 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 02:47:00,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 02:47:00,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 02:47:00,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 02:47:00,057 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 02:47:00,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 02:47:00,058 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 02:47:00,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 02:47:00,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 02:47:00,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 02:47:00,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 02:47:00,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 02:47:00,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 02:47:00,060 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 02:47:00,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 02:47:00,060 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 02:47:00,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 02:47:00,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 02:47:00,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 02:47:00,061 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 02:47:00,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 02:47:00,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 02:47:00,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 02:47:00,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 02:47:00,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 02:47:00,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 02:47:00,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 02:47:00,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 02:47:00,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 02:47:00,064 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 -> 9c051ca3a402db468e0ce05dfc38d0dfe3d0c9a7 [2020-10-20 02:47:00,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 02:47:00,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 02:47:00,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 02:47:00,289 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 02:47:00,290 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 02:47:00,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/17_szymanski.i [2020-10-20 02:47:00,372 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5ef467e4/993fc09d00dd47c1ab0520a4bfb25354/FLAGf1eda18bb [2020-10-20 02:47:00,960 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 02:47:00,961 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/17_szymanski.i [2020-10-20 02:47:00,976 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5ef467e4/993fc09d00dd47c1ab0520a4bfb25354/FLAGf1eda18bb [2020-10-20 02:47:01,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5ef467e4/993fc09d00dd47c1ab0520a4bfb25354 [2020-10-20 02:47:01,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 02:47:01,287 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 02:47:01,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 02:47:01,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 02:47:01,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 02:47:01,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 02:47:01" (1/1) ... [2020-10-20 02:47:01,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@540fba32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:47:01, skipping insertion in model container [2020-10-20 02:47:01,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 02:47:01" (1/1) ... [2020-10-20 02:47:01,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 02:47:01,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 02:47:01,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 02:47:01,849 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 02:47:01,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 02:47:02,005 INFO L208 MainTranslator]: Completed translation [2020-10-20 02:47:02,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:47:02 WrapperNode [2020-10-20 02:47:02,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 02:47:02,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 02:47:02,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 02:47:02,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 02:47:02,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:47:02" (1/1) ... [2020-10-20 02:47:02,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:47:02" (1/1) ... [2020-10-20 02:47:02,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 02:47:02,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 02:47:02,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 02:47:02,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 02:47:02,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:47:02" (1/1) ... [2020-10-20 02:47:02,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:47:02" (1/1) ... [2020-10-20 02:47:02,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:47:02" (1/1) ... [2020-10-20 02:47:02,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:47:02" (1/1) ... [2020-10-20 02:47:02,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:47:02" (1/1) ... [2020-10-20 02:47:02,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:47:02" (1/1) ... [2020-10-20 02:47:02,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:47:02" (1/1) ... [2020-10-20 02:47:02,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 02:47:02,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 02:47:02,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 02:47:02,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 02:47:02,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:47:02" (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 02:47:02,163 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-20 02:47:02,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-20 02:47:02,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 02:47:02,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 02:47:02,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 02:47:02,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 02:47:02,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 02:47:02,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 02:47:02,168 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 02:47:02,571 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 02:47:02,571 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-20 02:47:02,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 02:47:02 BoogieIcfgContainer [2020-10-20 02:47:02,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 02:47:02,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 02:47:02,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 02:47:02,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 02:47:02,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 02:47:01" (1/3) ... [2020-10-20 02:47:02,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b5d5c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 02:47:02, skipping insertion in model container [2020-10-20 02:47:02,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:47:02" (2/3) ... [2020-10-20 02:47:02,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b5d5c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 02:47:02, skipping insertion in model container [2020-10-20 02:47:02,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 02:47:02" (3/3) ... [2020-10-20 02:47:02,583 INFO L111 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2020-10-20 02:47:02,595 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 02:47:02,596 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 02:47:02,604 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-20 02:47:02,605 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 02:47:02,629 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:02,630 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:02,630 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:02,630 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:02,630 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:02,630 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:02,631 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:02,631 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:02,632 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:02,632 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:02,636 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:02,637 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:02,637 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:02,637 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:02,638 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:02,638 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:02,645 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 02:47:02,659 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 02:47:02,681 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 02:47:02,681 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 02:47:02,681 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 02:47:02,681 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 02:47:02,682 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 02:47:02,682 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 02:47:02,682 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 02:47:02,682 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 02:47:02,697 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 02:47:02,700 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 96 transitions, 197 flow [2020-10-20 02:47:02,703 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 96 transitions, 197 flow [2020-10-20 02:47:02,706 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 74 places, 96 transitions, 197 flow [2020-10-20 02:47:02,771 INFO L129 PetriNetUnfolder]: 26/95 cut-off events. [2020-10-20 02:47:02,771 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 02:47:02,779 INFO L80 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 95 events. 26/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 155 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 80. Up to 3 conditions per place. [2020-10-20 02:47:02,783 INFO L117 LiptonReduction]: Number of co-enabled transitions 3150 [2020-10-20 02:47:03,889 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-20 02:47:04,018 INFO L132 LiptonReduction]: Checked pairs total: 5734 [2020-10-20 02:47:04,019 INFO L134 LiptonReduction]: Total number of compositions: 63 [2020-10-20 02:47:04,027 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 51 transitions, 107 flow [2020-10-20 02:47:04,048 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 227 states. [2020-10-20 02:47:04,051 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states. [2020-10-20 02:47:04,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 02:47:04,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:47:04,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:47:04,062 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:47:04,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:47:04,068 INFO L82 PathProgramCache]: Analyzing trace with hash 556857473, now seen corresponding path program 1 times [2020-10-20 02:47:04,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:47:04,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111516620] [2020-10-20 02:47:04,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:47:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:47:04,235 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 02:47:04,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111516620] [2020-10-20 02:47:04,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:47:04,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 02:47:04,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609963679] [2020-10-20 02:47:04,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 02:47:04,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:47:04,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 02:47:04,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 02:47:04,260 INFO L87 Difference]: Start difference. First operand 227 states. Second operand 2 states. [2020-10-20 02:47:04,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:47:04,290 INFO L93 Difference]: Finished difference Result 198 states and 534 transitions. [2020-10-20 02:47:04,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 02:47:04,291 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-20 02:47:04,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:47:04,307 INFO L225 Difference]: With dead ends: 198 [2020-10-20 02:47:04,307 INFO L226 Difference]: Without dead ends: 198 [2020-10-20 02:47:04,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 02:47:04,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-20 02:47:04,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-10-20 02:47:04,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-20 02:47:04,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 534 transitions. [2020-10-20 02:47:04,382 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 534 transitions. Word has length 9 [2020-10-20 02:47:04,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:47:04,383 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 534 transitions. [2020-10-20 02:47:04,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 02:47:04,383 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 534 transitions. [2020-10-20 02:47:04,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 02:47:04,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:47:04,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:47:04,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 02:47:04,386 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:47:04,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:47:04,386 INFO L82 PathProgramCache]: Analyzing trace with hash -265870444, now seen corresponding path program 1 times [2020-10-20 02:47:04,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:47:04,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307582064] [2020-10-20 02:47:04,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:47:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:47:04,493 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 02:47:04,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307582064] [2020-10-20 02:47:04,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:47:04,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 02:47:04,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860690244] [2020-10-20 02:47:04,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 02:47:04,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:47:04,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 02:47:04,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:47:04,497 INFO L87 Difference]: Start difference. First operand 198 states and 534 transitions. Second operand 3 states. [2020-10-20 02:47:04,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:47:04,551 INFO L93 Difference]: Finished difference Result 362 states and 979 transitions. [2020-10-20 02:47:04,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 02:47:04,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-20 02:47:04,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:47:04,557 INFO L225 Difference]: With dead ends: 362 [2020-10-20 02:47:04,557 INFO L226 Difference]: Without dead ends: 362 [2020-10-20 02:47:04,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 02:47:04,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-10-20 02:47:04,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 221. [2020-10-20 02:47:04,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-20 02:47:04,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 589 transitions. [2020-10-20 02:47:04,585 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 589 transitions. Word has length 11 [2020-10-20 02:47:04,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:47:04,586 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 589 transitions. [2020-10-20 02:47:04,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 02:47:04,586 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 589 transitions. [2020-10-20 02:47:04,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 02:47:04,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:47:04,588 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:47:04,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 02:47:04,589 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:47:04,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:47:04,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1897023782, now seen corresponding path program 1 times [2020-10-20 02:47:04,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:47:04,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030269331] [2020-10-20 02:47:04,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:47:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:47:04,635 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 02:47:04,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030269331] [2020-10-20 02:47:04,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:47:04,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 02:47:04,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298076304] [2020-10-20 02:47:04,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 02:47:04,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:47:04,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 02:47:04,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:47:04,638 INFO L87 Difference]: Start difference. First operand 221 states and 589 transitions. Second operand 3 states. [2020-10-20 02:47:04,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:47:04,660 INFO L93 Difference]: Finished difference Result 348 states and 934 transitions. [2020-10-20 02:47:04,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 02:47:04,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-20 02:47:04,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:47:04,665 INFO L225 Difference]: With dead ends: 348 [2020-10-20 02:47:04,665 INFO L226 Difference]: Without dead ends: 348 [2020-10-20 02:47:04,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 02:47:04,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-20 02:47:04,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 218. [2020-10-20 02:47:04,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-20 02:47:04,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 560 transitions. [2020-10-20 02:47:04,684 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 560 transitions. Word has length 11 [2020-10-20 02:47:04,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:47:04,684 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 560 transitions. [2020-10-20 02:47:04,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 02:47:04,685 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 560 transitions. [2020-10-20 02:47:04,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 02:47:04,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:47:04,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:47:04,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 02:47:04,688 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:47:04,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:47:04,689 INFO L82 PathProgramCache]: Analyzing trace with hash -293575379, now seen corresponding path program 1 times [2020-10-20 02:47:04,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:47:04,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886517279] [2020-10-20 02:47:04,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:47:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:47:04,728 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 02:47:04,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886517279] [2020-10-20 02:47:04,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:47:04,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 02:47:04,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895122776] [2020-10-20 02:47:04,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 02:47:04,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:47:04,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 02:47:04,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:47:04,730 INFO L87 Difference]: Start difference. First operand 218 states and 560 transitions. Second operand 3 states. [2020-10-20 02:47:04,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:47:04,776 INFO L93 Difference]: Finished difference Result 234 states and 577 transitions. [2020-10-20 02:47:04,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 02:47:04,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-20 02:47:04,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:47:04,779 INFO L225 Difference]: With dead ends: 234 [2020-10-20 02:47:04,779 INFO L226 Difference]: Without dead ends: 234 [2020-10-20 02:47:04,780 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 02:47:04,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-20 02:47:04,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 230. [2020-10-20 02:47:04,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-20 02:47:04,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 569 transitions. [2020-10-20 02:47:04,792 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 569 transitions. Word has length 19 [2020-10-20 02:47:04,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:47:04,794 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 569 transitions. [2020-10-20 02:47:04,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 02:47:04,794 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 569 transitions. [2020-10-20 02:47:04,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 02:47:04,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:47:04,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:47:04,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 02:47:04,797 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:47:04,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:47:04,798 INFO L82 PathProgramCache]: Analyzing trace with hash -369860675, now seen corresponding path program 2 times [2020-10-20 02:47:04,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:47:04,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138255323] [2020-10-20 02:47:04,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:47:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:47:04,859 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 02:47:04,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138255323] [2020-10-20 02:47:04,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:47:04,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 02:47:04,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491100652] [2020-10-20 02:47:04,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 02:47:04,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:47:04,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 02:47:04,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:47:04,861 INFO L87 Difference]: Start difference. First operand 230 states and 569 transitions. Second operand 3 states. [2020-10-20 02:47:04,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:47:04,906 INFO L93 Difference]: Finished difference Result 228 states and 553 transitions. [2020-10-20 02:47:04,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 02:47:04,907 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-20 02:47:04,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:47:04,909 INFO L225 Difference]: With dead ends: 228 [2020-10-20 02:47:04,909 INFO L226 Difference]: Without dead ends: 228 [2020-10-20 02:47:04,909 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 02:47:04,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-20 02:47:04,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2020-10-20 02:47:04,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-20 02:47:04,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 553 transitions. [2020-10-20 02:47:04,918 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 553 transitions. Word has length 19 [2020-10-20 02:47:04,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:47:04,919 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 553 transitions. [2020-10-20 02:47:04,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 02:47:04,919 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 553 transitions. [2020-10-20 02:47:04,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 02:47:04,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:47:04,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:47:04,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 02:47:04,921 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:47:04,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:47:04,921 INFO L82 PathProgramCache]: Analyzing trace with hash -520856579, now seen corresponding path program 3 times [2020-10-20 02:47:04,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:47:04,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145692785] [2020-10-20 02:47:04,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:47:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:47:04,956 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 02:47:04,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145692785] [2020-10-20 02:47:04,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:47:04,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 02:47:04,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232124332] [2020-10-20 02:47:04,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 02:47:04,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:47:04,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 02:47:04,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:47:04,958 INFO L87 Difference]: Start difference. First operand 228 states and 553 transitions. Second operand 3 states. [2020-10-20 02:47:04,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:47:05,000 INFO L93 Difference]: Finished difference Result 194 states and 463 transitions. [2020-10-20 02:47:05,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 02:47:05,000 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-20 02:47:05,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:47:05,001 INFO L225 Difference]: With dead ends: 194 [2020-10-20 02:47:05,001 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 02:47:05,001 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 02:47:05,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 02:47:05,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 02:47:05,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 02:47:05,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 02:47:05,002 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-20 02:47:05,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:47:05,002 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 02:47:05,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 02:47:05,003 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 02:47:05,003 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 02:47:05,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 02:47:05,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 02:47:05 BasicIcfg [2020-10-20 02:47:05,007 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 02:47:05,007 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 02:47:05,007 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 02:47:05,008 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 02:47:05,008 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 02:47:02" (3/4) ... [2020-10-20 02:47:05,012 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 02:47:05,019 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2020-10-20 02:47:05,024 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-20 02:47:05,025 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 02:47:05,025 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 02:47:05,025 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 02:47:05,075 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 02:47:05,075 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 02:47:05,077 INFO L168 Benchmark]: Toolchain (without parser) took 3794.53 ms. Allocated memory was 44.6 MB in the beginning and 62.9 MB in the end (delta: 18.4 MB). Free memory was 23.7 MB in the beginning and 15.1 MB in the end (delta: 8.6 MB). Peak memory consumption was 27.0 MB. Max. memory is 14.3 GB. [2020-10-20 02:47:05,077 INFO L168 Benchmark]: CDTParser took 1.04 ms. Allocated memory is still 33.0 MB. Free memory was 12.3 MB in the beginning and 12.3 MB in the end (delta: 50.3 kB). Peak memory consumption was 50.3 kB. Max. memory is 14.3 GB. [2020-10-20 02:47:05,078 INFO L168 Benchmark]: CACSL2BoogieTranslator took 718.40 ms. Allocated memory was 44.6 MB in the beginning and 47.2 MB in the end (delta: 2.6 MB). Free memory was 22.9 MB in the beginning and 26.0 MB in the end (delta: -3.1 MB). Peak memory consumption was 13.3 MB. Max. memory is 14.3 GB. [2020-10-20 02:47:05,079 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.53 ms. Allocated memory is still 47.2 MB. Free memory was 25.7 MB in the beginning and 23.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 02:47:05,079 INFO L168 Benchmark]: Boogie Preprocessor took 32.27 ms. Allocated memory is still 47.2 MB. Free memory was 23.8 MB in the beginning and 22.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 02:47:05,080 INFO L168 Benchmark]: RCFGBuilder took 486.33 ms. Allocated memory was 47.2 MB in the beginning and 47.7 MB in the end (delta: 524.3 kB). Free memory was 22.0 MB in the beginning and 19.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 14.3 GB. [2020-10-20 02:47:05,081 INFO L168 Benchmark]: TraceAbstraction took 2431.75 ms. Allocated memory was 47.7 MB in the beginning and 62.9 MB in the end (delta: 15.2 MB). Free memory was 18.5 MB in the beginning and 18.6 MB in the end (delta: -112.1 kB). Peak memory consumption was 15.1 MB. Max. memory is 14.3 GB. [2020-10-20 02:47:05,081 INFO L168 Benchmark]: Witness Printer took 67.62 ms. Allocated memory is still 62.9 MB. Free memory was 18.6 MB in the beginning and 15.1 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. [2020-10-20 02:47:05,086 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.04 ms. Allocated memory is still 33.0 MB. Free memory was 12.3 MB in the beginning and 12.3 MB in the end (delta: 50.3 kB). Peak memory consumption was 50.3 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 718.40 ms. Allocated memory was 44.6 MB in the beginning and 47.2 MB in the end (delta: 2.6 MB). Free memory was 22.9 MB in the beginning and 26.0 MB in the end (delta: -3.1 MB). Peak memory consumption was 13.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 47.53 ms. Allocated memory is still 47.2 MB. Free memory was 25.7 MB in the beginning and 23.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 32.27 ms. Allocated memory is still 47.2 MB. Free memory was 23.8 MB in the beginning and 22.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 486.33 ms. Allocated memory was 47.2 MB in the beginning and 47.7 MB in the end (delta: 524.3 kB). Free memory was 22.0 MB in the beginning and 19.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2431.75 ms. Allocated memory was 47.7 MB in the beginning and 62.9 MB in the end (delta: 15.2 MB). Free memory was 18.5 MB in the beginning and 18.6 MB in the end (delta: -112.1 kB). Peak memory consumption was 15.1 MB. Max. memory is 14.3 GB. * Witness Printer took 67.62 ms. Allocated memory is still 62.9 MB. Free memory was 18.6 MB in the beginning and 15.1 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1482 VarBasedMoverChecksPositive, 38 VarBasedMoverChecksNegative, 16 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 107 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 74 PlacesBefore, 35 PlacesAfterwards, 96 TransitionsBefore, 51 TransitionsAfterwards, 3150 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 6 ChoiceCompositions, 63 TotalNumberOfCompositions, 5734 MoverChecksTotal - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 71 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 314 SDtfs, 133 SDslu, 117 SDs, 0 SdLazy, 76 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 275 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 1600 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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...