./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/sigma.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 701f399f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/sigma.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0213c2498f4ad9d8dd3bd44119e09066ed0e9f1d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-701f399 [2019-11-22 09:34:58,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-22 09:34:58,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-22 09:34:58,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-22 09:34:58,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-22 09:34:58,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-22 09:34:58,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-22 09:34:58,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-22 09:34:58,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-22 09:34:58,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-22 09:34:58,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-22 09:34:58,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-22 09:34:58,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-22 09:34:58,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-22 09:34:58,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-22 09:34:58,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-22 09:34:58,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-22 09:34:58,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-22 09:34:58,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-22 09:34:58,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-22 09:34:58,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-22 09:34:58,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-22 09:34:58,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-22 09:34:58,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-22 09:34:58,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-22 09:34:58,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-22 09:34:58,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-22 09:34:58,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-22 09:34:58,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-22 09:34:58,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-22 09:34:58,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-22 09:34:58,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-22 09:34:58,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-22 09:34:58,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-22 09:34:58,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-22 09:34:58,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-22 09:34:58,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-22 09:34:58,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-22 09:34:58,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-22 09:34:58,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-22 09:34:58,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-22 09:34:58,967 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2019-11-22 09:34:59,003 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-22 09:34:59,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-22 09:34:59,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-22 09:34:59,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-22 09:34:59,007 INFO L138 SettingsManager]: * Use SBE=true [2019-11-22 09:34:59,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-22 09:34:59,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-22 09:34:59,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-22 09:34:59,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-22 09:34:59,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-22 09:34:59,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-22 09:34:59,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-22 09:34:59,010 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-22 09:34:59,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-22 09:34:59,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-22 09:34:59,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-22 09:34:59,012 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-22 09:34:59,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-22 09:34:59,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-22 09:34:59,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-22 09:34:59,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-22 09:34:59,013 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-22 09:34:59,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-22 09:34:59,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-22 09:34:59,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-22 09:34:59,014 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-22 09:34:59,015 INFO L138 SettingsManager]: * To the following directory=dump/ 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(__VERIFIER_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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0213c2498f4ad9d8dd3bd44119e09066ed0e9f1d [2019-11-22 09:34:59,311 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-22 09:34:59,321 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-22 09:34:59,325 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-22 09:34:59,327 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-22 09:34:59,327 INFO L275 PluginConnector]: CDTParser initialized [2019-11-22 09:34:59,328 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/sigma.i [2019-11-22 09:34:59,403 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2a10e5ea/680a103a6d854dab99db6bed8a34dd78/FLAG689356f8c [2019-11-22 09:35:00,002 INFO L306 CDTParser]: Found 1 translation units. [2019-11-22 09:35:00,004 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/sigma.i [2019-11-22 09:35:00,027 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2a10e5ea/680a103a6d854dab99db6bed8a34dd78/FLAG689356f8c [2019-11-22 09:35:00,286 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2a10e5ea/680a103a6d854dab99db6bed8a34dd78 [2019-11-22 09:35:00,291 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-22 09:35:00,293 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-22 09:35:00,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-22 09:35:00,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-22 09:35:00,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-22 09:35:00,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:35:00" (1/1) ... [2019-11-22 09:35:00,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36c7b1f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:00, skipping insertion in model container [2019-11-22 09:35:00,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:35:00" (1/1) ... [2019-11-22 09:35:00,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-22 09:35:00,363 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-22 09:35:00,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-22 09:35:00,917 INFO L201 MainTranslator]: Completed pre-run [2019-11-22 09:35:00,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-22 09:35:01,157 INFO L205 MainTranslator]: Completed translation [2019-11-22 09:35:01,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:01 WrapperNode [2019-11-22 09:35:01,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-22 09:35:01,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-22 09:35:01,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-22 09:35:01,159 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-22 09:35:01,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:01" (1/1) ... [2019-11-22 09:35:01,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:01" (1/1) ... [2019-11-22 09:35:01,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-22 09:35:01,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-22 09:35:01,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-22 09:35:01,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-22 09:35:01,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:01" (1/1) ... [2019-11-22 09:35:01,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:01" (1/1) ... [2019-11-22 09:35:01,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:01" (1/1) ... [2019-11-22 09:35:01,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:01" (1/1) ... [2019-11-22 09:35:01,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:01" (1/1) ... [2019-11-22 09:35:01,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:01" (1/1) ... [2019-11-22 09:35:01,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:01" (1/1) ... [2019-11-22 09:35:01,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-22 09:35:01,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-22 09:35:01,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-22 09:35:01,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-22 09:35:01,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:01" (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 [2019-11-22 09:35:01,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-22 09:35:01,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-22 09:35:01,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-22 09:35:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-22 09:35:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-22 09:35:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-22 09:35:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-22 09:35:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2019-11-22 09:35:01,316 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2019-11-22 09:35:01,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-22 09:35:01,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-22 09:35:01,319 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-22 09:35:01,713 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-22 09:35:01,713 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-22 09:35:01,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:35:01 BoogieIcfgContainer [2019-11-22 09:35:01,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-22 09:35:01,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-22 09:35:01,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-22 09:35:01,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-22 09:35:01,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:35:00" (1/3) ... [2019-11-22 09:35:01,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d743af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:35:01, skipping insertion in model container [2019-11-22 09:35:01,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:01" (2/3) ... [2019-11-22 09:35:01,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d743af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:35:01, skipping insertion in model container [2019-11-22 09:35:01,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:35:01" (3/3) ... [2019-11-22 09:35:01,723 INFO L109 eAbstractionObserver]: Analyzing ICFG sigma.i [2019-11-22 09:35:01,758 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 09:35:01,758 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 09:35:01,759 WARN L315 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 09:35:01,759 WARN L315 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 09:35:01,759 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 09:35:01,760 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 09:35:01,760 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 09:35:01,761 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 09:35:01,761 WARN L315 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 09:35:01,761 WARN L315 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 09:35:01,761 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 09:35:01,762 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 09:35:01,762 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 09:35:01,762 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 09:35:01,762 WARN L315 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 09:35:01,763 WARN L315 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 09:35:01,763 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 09:35:01,763 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 09:35:01,791 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-22 09:35:01,792 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-22 09:35:01,799 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-22 09:35:01,810 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-22 09:35:01,831 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-22 09:35:01,831 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-22 09:35:01,831 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-22 09:35:01,832 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-22 09:35:01,832 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-22 09:35:01,832 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-22 09:35:01,832 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-22 09:35:01,832 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-22 09:35:01,844 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84 places, 85 transitions [2019-11-22 09:35:02,478 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7898 states. [2019-11-22 09:35:02,482 INFO L276 IsEmpty]: Start isEmpty. Operand 7898 states. [2019-11-22 09:35:02,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-22 09:35:02,497 INFO L402 BasicCegarLoop]: Found error trace [2019-11-22 09:35:02,499 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-22 09:35:02,500 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-22 09:35:02,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-22 09:35:02,511 INFO L82 PathProgramCache]: Analyzing trace with hash -937654746, now seen corresponding path program 1 times [2019-11-22 09:35:02,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-22 09:35:02,527 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56092418] [2019-11-22 09:35:02,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-22 09:35:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-22 09:35:02,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-22 09:35:02,880 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56092418] [2019-11-22 09:35:02,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-22 09:35:02,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-22 09:35:02,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770367148] [2019-11-22 09:35:02,888 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-22 09:35:02,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-22 09:35:02,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-22 09:35:02,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-22 09:35:02,907 INFO L87 Difference]: Start difference. First operand 7898 states. Second operand 2 states. [2019-11-22 09:35:03,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-22 09:35:03,046 INFO L93 Difference]: Finished difference Result 7898 states and 23969 transitions. [2019-11-22 09:35:03,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-22 09:35:03,048 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31 [2019-11-22 09:35:03,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-22 09:35:03,128 INFO L225 Difference]: With dead ends: 7898 [2019-11-22 09:35:03,129 INFO L226 Difference]: Without dead ends: 5849 [2019-11-22 09:35:03,132 INFO L630 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 [2019-11-22 09:35:03,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5849 states. [2019-11-22 09:35:03,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5849 to 5849. [2019-11-22 09:35:03,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5849 states. [2019-11-22 09:35:03,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5849 states to 5849 states and 17528 transitions. [2019-11-22 09:35:03,570 INFO L78 Accepts]: Start accepts. Automaton has 5849 states and 17528 transitions. Word has length 31 [2019-11-22 09:35:03,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-22 09:35:03,570 INFO L462 AbstractCegarLoop]: Abstraction has 5849 states and 17528 transitions. [2019-11-22 09:35:03,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-22 09:35:03,571 INFO L276 IsEmpty]: Start isEmpty. Operand 5849 states and 17528 transitions. [2019-11-22 09:35:03,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-22 09:35:03,572 INFO L402 BasicCegarLoop]: Found error trace [2019-11-22 09:35:03,572 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-22 09:35:03,572 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-22 09:35:03,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-22 09:35:03,574 INFO L82 PathProgramCache]: Analyzing trace with hash -218464121, now seen corresponding path program 1 times [2019-11-22 09:35:03,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-22 09:35:03,574 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108307449] [2019-11-22 09:35:03,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-22 09:35:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-22 09:35:03,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-22 09:35:03,775 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108307449] [2019-11-22 09:35:03,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-22 09:35:03,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-22 09:35:03,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052502182] [2019-11-22 09:35:03,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-22 09:35:03,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-22 09:35:03,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-22 09:35:03,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-22 09:35:03,780 INFO L87 Difference]: Start difference. First operand 5849 states and 17528 transitions. Second operand 5 states. [2019-11-22 09:35:03,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-22 09:35:03,966 INFO L93 Difference]: Finished difference Result 4683 states and 12717 transitions. [2019-11-22 09:35:03,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-22 09:35:03,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-11-22 09:35:03,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-22 09:35:03,995 INFO L225 Difference]: With dead ends: 4683 [2019-11-22 09:35:03,996 INFO L226 Difference]: Without dead ends: 4683 [2019-11-22 09:35:03,997 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-11-22 09:35:04,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4683 states. [2019-11-22 09:35:04,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4683 to 4094. [2019-11-22 09:35:04,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4094 states. [2019-11-22 09:35:04,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4094 states to 4094 states and 11323 transitions. [2019-11-22 09:35:04,136 INFO L78 Accepts]: Start accepts. Automaton has 4094 states and 11323 transitions. Word has length 31 [2019-11-22 09:35:04,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-22 09:35:04,139 INFO L462 AbstractCegarLoop]: Abstraction has 4094 states and 11323 transitions. [2019-11-22 09:35:04,139 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-22 09:35:04,140 INFO L276 IsEmpty]: Start isEmpty. Operand 4094 states and 11323 transitions. [2019-11-22 09:35:04,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-11-22 09:35:04,155 INFO L402 BasicCegarLoop]: Found error trace [2019-11-22 09:35:04,155 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-22 09:35:04,156 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-22 09:35:04,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-22 09:35:04,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1473441971, now seen corresponding path program 1 times [2019-11-22 09:35:04,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-22 09:35:04,157 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988010688] [2019-11-22 09:35:04,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-22 09:35:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-22 09:35:04,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-22 09:35:04,541 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988010688] [2019-11-22 09:35:04,542 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658908694] [2019-11-22 09:35:04,542 INFO L94 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 [2019-11-22 09:35:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-22 09:35:04,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-22 09:35:04,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-22 09:35:04,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-22 09:35:04,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-22 09:35:04,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6] total 18 [2019-11-22 09:35:04,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809773998] [2019-11-22 09:35:04,750 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-22 09:35:04,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-22 09:35:04,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-22 09:35:04,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2019-11-22 09:35:04,752 INFO L87 Difference]: Start difference. First operand 4094 states and 11323 transitions. Second operand 18 states. [2019-11-22 09:35:04,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-22 09:35:04,975 INFO L93 Difference]: Finished difference Result 4199 states and 11552 transitions. [2019-11-22 09:35:04,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-22 09:35:04,976 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 63 [2019-11-22 09:35:04,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-22 09:35:05,000 INFO L225 Difference]: With dead ends: 4199 [2019-11-22 09:35:05,001 INFO L226 Difference]: Without dead ends: 4199 [2019-11-22 09:35:05,001 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2019-11-22 09:35:05,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4199 states. [2019-11-22 09:35:05,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4199 to 4084. [2019-11-22 09:35:05,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4084 states. [2019-11-22 09:35:05,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4084 states to 4084 states and 11300 transitions. [2019-11-22 09:35:05,123 INFO L78 Accepts]: Start accepts. Automaton has 4084 states and 11300 transitions. Word has length 63 [2019-11-22 09:35:05,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-22 09:35:05,124 INFO L462 AbstractCegarLoop]: Abstraction has 4084 states and 11300 transitions. [2019-11-22 09:35:05,124 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-22 09:35:05,124 INFO L276 IsEmpty]: Start isEmpty. Operand 4084 states and 11300 transitions. [2019-11-22 09:35:05,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-22 09:35:05,131 INFO L402 BasicCegarLoop]: Found error trace [2019-11-22 09:35:05,132 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-22 09:35:05,335 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-22 09:35:05,335 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-22 09:35:05,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-22 09:35:05,336 INFO L82 PathProgramCache]: Analyzing trace with hash 414543156, now seen corresponding path program 1 times [2019-11-22 09:35:05,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-22 09:35:05,338 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814106052] [2019-11-22 09:35:05,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-22 09:35:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-22 09:35:05,710 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-22 09:35:05,710 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814106052] [2019-11-22 09:35:05,710 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421026527] [2019-11-22 09:35:05,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-22 09:35:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-22 09:35:05,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-22 09:35:05,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-22 09:35:05,951 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-22 09:35:05,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-22 09:35:05,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8] total 22 [2019-11-22 09:35:05,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984857568] [2019-11-22 09:35:05,954 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-22 09:35:05,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-22 09:35:05,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-22 09:35:05,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2019-11-22 09:35:05,955 INFO L87 Difference]: Start difference. First operand 4084 states and 11300 transitions. Second operand 22 states. [2019-11-22 09:35:06,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-22 09:35:06,239 INFO L93 Difference]: Finished difference Result 4034 states and 11145 transitions. [2019-11-22 09:35:06,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-22 09:35:06,240 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 75 [2019-11-22 09:35:06,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-22 09:35:06,262 INFO L225 Difference]: With dead ends: 4034 [2019-11-22 09:35:06,263 INFO L226 Difference]: Without dead ends: 4034 [2019-11-22 09:35:06,263 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2019-11-22 09:35:06,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4034 states. [2019-11-22 09:35:06,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4034 to 4034. [2019-11-22 09:35:06,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4034 states. [2019-11-22 09:35:06,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4034 states to 4034 states and 11145 transitions. [2019-11-22 09:35:06,389 INFO L78 Accepts]: Start accepts. Automaton has 4034 states and 11145 transitions. Word has length 75 [2019-11-22 09:35:06,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-22 09:35:06,390 INFO L462 AbstractCegarLoop]: Abstraction has 4034 states and 11145 transitions. [2019-11-22 09:35:06,390 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-22 09:35:06,391 INFO L276 IsEmpty]: Start isEmpty. Operand 4034 states and 11145 transitions. [2019-11-22 09:35:06,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-11-22 09:35:06,402 INFO L402 BasicCegarLoop]: Found error trace [2019-11-22 09:35:06,402 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-22 09:35:06,606 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-22 09:35:06,606 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-22 09:35:06,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-22 09:35:06,608 INFO L82 PathProgramCache]: Analyzing trace with hash 900589660, now seen corresponding path program 1 times [2019-11-22 09:35:06,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-22 09:35:06,609 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512685941] [2019-11-22 09:35:06,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-22 09:35:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-22 09:35:07,024 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-22 09:35:07,024 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512685941] [2019-11-22 09:35:07,025 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482784311] [2019-11-22 09:35:07,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-22 09:35:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-22 09:35:07,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-22 09:35:07,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-22 09:35:07,316 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-22 09:35:07,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-22 09:35:07,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 10] total 26 [2019-11-22 09:35:07,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112590243] [2019-11-22 09:35:07,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-22 09:35:07,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-22 09:35:07,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-22 09:35:07,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2019-11-22 09:35:07,318 INFO L87 Difference]: Start difference. First operand 4034 states and 11145 transitions. Second operand 26 states. [2019-11-22 09:35:07,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-22 09:35:07,528 INFO L93 Difference]: Finished difference Result 1137 states and 3340 transitions. [2019-11-22 09:35:07,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-22 09:35:07,528 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 87 [2019-11-22 09:35:07,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-22 09:35:07,529 INFO L225 Difference]: With dead ends: 1137 [2019-11-22 09:35:07,529 INFO L226 Difference]: Without dead ends: 0 [2019-11-22 09:35:07,530 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=220, Invalid=772, Unknown=0, NotChecked=0, Total=992 [2019-11-22 09:35:07,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-22 09:35:07,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-22 09:35:07,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-22 09:35:07,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-22 09:35:07,531 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 87 [2019-11-22 09:35:07,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-22 09:35:07,531 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-22 09:35:07,532 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-22 09:35:07,532 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-22 09:35:07,532 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-22 09:35:07,735 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-22 09:35:07,740 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-22 09:35:07,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 09:35:07 BasicIcfg [2019-11-22 09:35:07,742 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-22 09:35:07,743 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-22 09:35:07,744 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-22 09:35:07,746 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-22 09:35:07,747 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:35:01" (3/4) ... [2019-11-22 09:35:07,752 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-22 09:35:07,760 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread [2019-11-22 09:35:07,764 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-11-22 09:35:07,765 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-22 09:35:07,765 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-22 09:35:07,822 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-22 09:35:07,822 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-22 09:35:07,825 INFO L168 Benchmark]: Toolchain (without parser) took 7532.00 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 298.8 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -178.4 MB). Peak memory consumption was 120.5 MB. Max. memory is 11.5 GB. [2019-11-22 09:35:07,826 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-22 09:35:07,826 INFO L168 Benchmark]: CACSL2BoogieTranslator took 864.56 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.1 MB). Free memory was 955.0 MB in the beginning and 1.0 GB in the end (delta: -82.3 MB). Peak memory consumption was 37.5 MB. Max. memory is 11.5 GB. [2019-11-22 09:35:07,827 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.41 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-22 09:35:07,828 INFO L168 Benchmark]: Boogie Preprocessor took 34.61 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-22 09:35:07,828 INFO L168 Benchmark]: RCFGBuilder took 460.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2019-11-22 09:35:07,829 INFO L168 Benchmark]: TraceAbstraction took 6026.42 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 189.8 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -127.5 MB). Peak memory consumption was 62.3 MB. Max. memory is 11.5 GB. [2019-11-22 09:35:07,830 INFO L168 Benchmark]: Witness Printer took 79.89 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2019-11-22 09:35:07,833 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 864.56 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.1 MB). Free memory was 955.0 MB in the beginning and 1.0 GB in the end (delta: -82.3 MB). Peak memory consumption was 37.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 60.41 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.61 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 460.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6026.42 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 189.8 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -127.5 MB). Peak memory consumption was 62.3 MB. Max. memory is 11.5 GB. * Witness Printer took 79.89 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1089]: 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 5 procedures, 83 locations, 1 error locations. Result: SAFE, OverallTime: 5.9s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 373 SDtfs, 728 SDslu, 1636 SDs, 0 SdLazy, 517 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 293 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7898occurred 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: 0.8s AutomataMinimizationTime, 5 MinimizatonAttempts, 704 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 512 NumberOfCodeBlocks, 512 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 504 ConstructedInterpolants, 0 QuantifiedInterpolants, 154356 SizeOfPredicates, 18 NumberOfNonLiveVariables, 504 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 6/120 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...