./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/peterson_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2a2248d4-03d2-4de5-9768-0f7a18bfc63f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2a2248d4-03d2-4de5-9768-0f7a18bfc63f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2a2248d4-03d2-4de5-9768-0f7a18bfc63f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2a2248d4-03d2-4de5-9768-0f7a18bfc63f/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/peterson_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_2a2248d4-03d2-4de5-9768-0f7a18bfc63f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2a2248d4-03d2-4de5-9768-0f7a18bfc63f/bin-2019/uautomizer --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 32bit --witnessprinter.graph.data.programhash a9bea0c488d2f45d989ec349e22f0d31a29496ef ................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 08:56:58,519 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 08:56:58,520 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 08:56:58,526 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 08:56:58,526 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 08:56:58,526 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 08:56:58,527 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 08:56:58,528 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 08:56:58,528 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 08:56:58,529 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 08:56:58,529 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 08:56:58,529 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 08:56:58,530 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 08:56:58,530 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 08:56:58,531 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 08:56:58,531 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 08:56:58,532 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 08:56:58,533 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 08:56:58,534 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 08:56:58,534 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 08:56:58,535 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 08:56:58,536 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 08:56:58,537 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 08:56:58,537 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 08:56:58,537 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 08:56:58,538 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 08:56:58,538 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 08:56:58,539 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 08:56:58,539 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 08:56:58,540 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 08:56:58,540 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 08:56:58,540 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 08:56:58,540 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 08:56:58,540 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 08:56:58,541 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 08:56:58,541 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 08:56:58,542 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2a2248d4-03d2-4de5-9768-0f7a18bfc63f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-02 08:56:58,549 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 08:56:58,549 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 08:56:58,549 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 08:56:58,550 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 08:56:58,550 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 08:56:58,550 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 08:56:58,550 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 08:56:58,550 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 08:56:58,550 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 08:56:58,550 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 08:56:58,550 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 08:56:58,551 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 08:56:58,551 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 08:56:58,551 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 08:56:58,551 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 08:56:58,551 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 08:56:58,551 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 08:56:58,551 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 08:56:58,551 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 08:56:58,551 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 08:56:58,551 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 08:56:58,551 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 08:56:58,551 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 08:56:58,552 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 08:56:58,552 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 08:56:58,552 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 08:56:58,552 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 08:56:58,552 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 08:56:58,552 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 08:56:58,552 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 08:56:58,552 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_2a2248d4-03d2-4de5-9768-0f7a18bfc63f/bin-2019/uautomizer 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9bea0c488d2f45d989ec349e22f0d31a29496ef [2018-12-02 08:56:58,569 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 08:56:58,576 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 08:56:58,578 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 08:56:58,579 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 08:56:58,579 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 08:56:58,579 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2a2248d4-03d2-4de5-9768-0f7a18bfc63f/bin-2019/uautomizer/../../sv-benchmarks/c/pthread-atomic/peterson_true-unreach-call.i [2018-12-02 08:56:58,614 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2a2248d4-03d2-4de5-9768-0f7a18bfc63f/bin-2019/uautomizer/data/84c7510a5/08cdf60023b345b99d6de647ec097cd4/FLAGbc74b6d70 [2018-12-02 08:56:58,972 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 08:56:58,972 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2a2248d4-03d2-4de5-9768-0f7a18bfc63f/sv-benchmarks/c/pthread-atomic/peterson_true-unreach-call.i [2018-12-02 08:56:58,980 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2a2248d4-03d2-4de5-9768-0f7a18bfc63f/bin-2019/uautomizer/data/84c7510a5/08cdf60023b345b99d6de647ec097cd4/FLAGbc74b6d70 [2018-12-02 08:56:58,988 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2a2248d4-03d2-4de5-9768-0f7a18bfc63f/bin-2019/uautomizer/data/84c7510a5/08cdf60023b345b99d6de647ec097cd4 [2018-12-02 08:56:58,989 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 08:56:58,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 08:56:58,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 08:56:58,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 08:56:58,993 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 08:56:58,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:56:58" (1/1) ... [2018-12-02 08:56:58,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c5b6929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:58, skipping insertion in model container [2018-12-02 08:56:58,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:56:58" (1/1) ... [2018-12-02 08:56:58,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 08:56:59,018 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 08:56:59,170 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 08:56:59,178 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 08:56:59,235 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 08:56:59,264 INFO L195 MainTranslator]: Completed translation [2018-12-02 08:56:59,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:59 WrapperNode [2018-12-02 08:56:59,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 08:56:59,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 08:56:59,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 08:56:59,265 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 08:56:59,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:59" (1/1) ... [2018-12-02 08:56:59,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:59" (1/1) ... [2018-12-02 08:56:59,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 08:56:59,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 08:56:59,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 08:56:59,290 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 08:56:59,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:59" (1/1) ... [2018-12-02 08:56:59,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:59" (1/1) ... [2018-12-02 08:56:59,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:59" (1/1) ... [2018-12-02 08:56:59,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:59" (1/1) ... [2018-12-02 08:56:59,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:59" (1/1) ... [2018-12-02 08:56:59,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:59" (1/1) ... [2018-12-02 08:56:59,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:59" (1/1) ... [2018-12-02 08:56:59,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 08:56:59,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 08:56:59,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 08:56:59,305 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 08:56:59,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2a2248d4-03d2-4de5-9768-0f7a18bfc63f/bin-2019/uautomizer/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 [2018-12-02 08:56:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 08:56:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 08:56:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2018-12-02 08:56:59,341 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2018-12-02 08:56:59,342 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2018-12-02 08:56:59,342 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2018-12-02 08:56:59,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 08:56:59,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 08:56:59,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 08:56:59,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 08:56:59,343 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-02 08:56:59,505 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 08:56:59,505 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-02 08:56:59,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:56:59 BoogieIcfgContainer [2018-12-02 08:56:59,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 08:56:59,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 08:56:59,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 08:56:59,508 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 08:56:59,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:56:58" (1/3) ... [2018-12-02 08:56:59,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e3b8aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:56:59, skipping insertion in model container [2018-12-02 08:56:59,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:59" (2/3) ... [2018-12-02 08:56:59,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e3b8aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:56:59, skipping insertion in model container [2018-12-02 08:56:59,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:56:59" (3/3) ... [2018-12-02 08:56:59,510 INFO L112 eAbstractionObserver]: Analyzing ICFG peterson_true-unreach-call.i [2018-12-02 08:56:59,530 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr2_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 08:56:59,530 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr2_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 08:56:59,530 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr2_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 08:56:59,530 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr2_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 08:56:59,531 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 08:56:59,531 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 08:56:59,531 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 08:56:59,531 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 08:56:59,531 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 08:56:59,531 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 08:56:59,532 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 08:56:59,532 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 08:56:59,541 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-02 08:56:59,541 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 08:56:59,546 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-12-02 08:56:59,555 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-12-02 08:56:59,570 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 08:56:59,570 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 08:56:59,570 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 08:56:59,571 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 08:56:59,571 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 08:56:59,571 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 08:56:59,571 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 08:56:59,571 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 08:56:59,571 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 08:56:59,576 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54places, 59 transitions [2018-12-02 08:56:59,595 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 561 states. [2018-12-02 08:56:59,597 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states. [2018-12-02 08:56:59,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 08:56:59,602 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:56:59,603 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:56:59,604 INFO L423 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:56:59,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:56:59,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1235087554, now seen corresponding path program 1 times [2018-12-02 08:56:59,609 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:56:59,609 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:56:59,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:56:59,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:56:59,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:56:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:56:59,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:56:59,693 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:56:59,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 08:56:59,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 08:56:59,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 08:56:59,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 08:56:59,705 INFO L87 Difference]: Start difference. First operand 561 states. Second operand 2 states. [2018-12-02 08:56:59,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:56:59,723 INFO L93 Difference]: Finished difference Result 561 states and 1390 transitions. [2018-12-02 08:56:59,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 08:56:59,724 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-12-02 08:56:59,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:56:59,733 INFO L225 Difference]: With dead ends: 561 [2018-12-02 08:56:59,733 INFO L226 Difference]: Without dead ends: 480 [2018-12-02 08:56:59,734 INFO L631 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 [2018-12-02 08:56:59,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2018-12-02 08:56:59,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 480. [2018-12-02 08:56:59,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2018-12-02 08:56:59,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 1204 transitions. [2018-12-02 08:56:59,771 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 1204 transitions. Word has length 19 [2018-12-02 08:56:59,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:56:59,771 INFO L480 AbstractCegarLoop]: Abstraction has 480 states and 1204 transitions. [2018-12-02 08:56:59,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 08:56:59,772 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 1204 transitions. [2018-12-02 08:56:59,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 08:56:59,772 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:56:59,772 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:56:59,772 INFO L423 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:56:59,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:56:59,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1235117345, now seen corresponding path program 1 times [2018-12-02 08:56:59,773 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:56:59,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:56:59,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:56:59,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:56:59,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:56:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:56:59,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:56:59,806 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:56:59,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 08:56:59,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 08:56:59,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 08:56:59,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 08:56:59,808 INFO L87 Difference]: Start difference. First operand 480 states and 1204 transitions. Second operand 3 states. [2018-12-02 08:56:59,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:56:59,827 INFO L93 Difference]: Finished difference Result 513 states and 1237 transitions. [2018-12-02 08:56:59,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 08:56:59,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-12-02 08:56:59,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:56:59,829 INFO L225 Difference]: With dead ends: 513 [2018-12-02 08:56:59,829 INFO L226 Difference]: Without dead ends: 423 [2018-12-02 08:56:59,830 INFO L631 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 [2018-12-02 08:56:59,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-12-02 08:56:59,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 378. [2018-12-02 08:56:59,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2018-12-02 08:56:59,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 922 transitions. [2018-12-02 08:56:59,839 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 922 transitions. Word has length 19 [2018-12-02 08:56:59,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:56:59,840 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 922 transitions. [2018-12-02 08:56:59,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 08:56:59,840 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 922 transitions. [2018-12-02 08:56:59,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 08:56:59,840 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:56:59,840 INFO L402 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] [2018-12-02 08:56:59,841 INFO L423 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:56:59,841 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:56:59,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1862669806, now seen corresponding path program 1 times [2018-12-02 08:56:59,841 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:56:59,841 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:56:59,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:56:59,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:56:59,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:56:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:56:59,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:56:59,866 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:56:59,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 08:56:59,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 08:56:59,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 08:56:59,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 08:56:59,867 INFO L87 Difference]: Start difference. First operand 378 states and 922 transitions. Second operand 3 states. [2018-12-02 08:56:59,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:56:59,882 INFO L93 Difference]: Finished difference Result 345 states and 805 transitions. [2018-12-02 08:56:59,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 08:56:59,883 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-12-02 08:56:59,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:56:59,884 INFO L225 Difference]: With dead ends: 345 [2018-12-02 08:56:59,884 INFO L226 Difference]: Without dead ends: 243 [2018-12-02 08:56:59,884 INFO L631 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 [2018-12-02 08:56:59,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-12-02 08:56:59,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-12-02 08:56:59,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-12-02 08:56:59,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 556 transitions. [2018-12-02 08:56:59,892 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 556 transitions. Word has length 22 [2018-12-02 08:56:59,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:56:59,893 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 556 transitions. [2018-12-02 08:56:59,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 08:56:59,893 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 556 transitions. [2018-12-02 08:56:59,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-02 08:56:59,894 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:56:59,894 INFO L402 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] [2018-12-02 08:56:59,894 INFO L423 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:56:59,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:56:59,895 INFO L82 PathProgramCache]: Analyzing trace with hash 352522995, now seen corresponding path program 1 times [2018-12-02 08:56:59,895 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:56:59,895 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:56:59,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:56:59,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:56:59,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:56:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:56:59,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:56:59,934 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:56:59,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 08:56:59,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 08:56:59,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 08:56:59,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-02 08:56:59,935 INFO L87 Difference]: Start difference. First operand 243 states and 556 transitions. Second operand 4 states. [2018-12-02 08:56:59,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:56:59,957 INFO L93 Difference]: Finished difference Result 264 states and 607 transitions. [2018-12-02 08:56:59,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 08:56:59,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-02 08:56:59,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:56:59,959 INFO L225 Difference]: With dead ends: 264 [2018-12-02 08:56:59,959 INFO L226 Difference]: Without dead ends: 228 [2018-12-02 08:56:59,959 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-02 08:56:59,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-12-02 08:56:59,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-12-02 08:56:59,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-12-02 08:56:59,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 496 transitions. [2018-12-02 08:56:59,964 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 496 transitions. Word has length 27 [2018-12-02 08:56:59,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:56:59,965 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 496 transitions. [2018-12-02 08:56:59,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 08:56:59,965 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 496 transitions. [2018-12-02 08:56:59,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-02 08:56:59,965 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:56:59,965 INFO L402 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] [2018-12-02 08:56:59,966 INFO L423 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:56:59,966 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:56:59,966 INFO L82 PathProgramCache]: Analyzing trace with hash 2145141981, now seen corresponding path program 1 times [2018-12-02 08:56:59,966 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:56:59,966 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:56:59,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:56:59,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:56:59,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:56:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:56:59,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:56:59,993 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:56:59,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 08:56:59,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 08:56:59,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 08:56:59,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-02 08:56:59,993 INFO L87 Difference]: Start difference. First operand 228 states and 496 transitions. Second operand 4 states. [2018-12-02 08:57:00,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:57:00,001 INFO L93 Difference]: Finished difference Result 105 states and 234 transitions. [2018-12-02 08:57:00,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 08:57:00,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-02 08:57:00,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:57:00,002 INFO L225 Difference]: With dead ends: 105 [2018-12-02 08:57:00,002 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 08:57:00,002 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-02 08:57:00,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 08:57:00,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 08:57:00,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 08:57:00,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 08:57:00,002 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-12-02 08:57:00,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:57:00,002 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 08:57:00,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 08:57:00,002 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 08:57:00,003 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 08:57:00,004 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-12-02 08:57:00,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 08:57:00 BasicIcfg [2018-12-02 08:57:00,005 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 08:57:00,006 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 08:57:00,006 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 08:57:00,006 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 08:57:00,006 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:56:59" (3/4) ... [2018-12-02 08:57:00,008 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 08:57:00,013 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2018-12-02 08:57:00,013 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2018-12-02 08:57:00,015 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-12-02 08:57:00,015 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-02 08:57:00,037 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_2a2248d4-03d2-4de5-9768-0f7a18bfc63f/bin-2019/uautomizer/witness.graphml [2018-12-02 08:57:00,037 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 08:57:00,038 INFO L168 Benchmark]: Toolchain (without parser) took 1047.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 956.0 MB in the beginning and 967.3 MB in the end (delta: -11.3 MB). Peak memory consumption was 90.4 MB. Max. memory is 11.5 GB. [2018-12-02 08:57:00,038 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 08:57:00,039 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.54 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 956.0 MB in the beginning and 1.1 GB in the end (delta: -122.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. [2018-12-02 08:57:00,039 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.87 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 08:57:00,039 INFO L168 Benchmark]: Boogie Preprocessor took 15.28 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 08:57:00,039 INFO L168 Benchmark]: RCFGBuilder took 200.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. [2018-12-02 08:57:00,040 INFO L168 Benchmark]: TraceAbstraction took 499.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 967.3 MB in the end (delta: 84.8 MB). Peak memory consumption was 84.8 MB. Max. memory is 11.5 GB. [2018-12-02 08:57:00,040 INFO L168 Benchmark]: Witness Printer took 31.33 ms. Allocated memory is still 1.1 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 08:57:00,041 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 273.54 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 956.0 MB in the beginning and 1.1 GB in the end (delta: -122.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.87 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.28 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 200.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 499.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 967.3 MB in the end (delta: 84.8 MB). Peak memory consumption was 84.8 MB. Max. memory is 11.5 GB. * Witness Printer took 31.33 ms. Allocated memory is still 1.1 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 652]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 643]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 652]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 643]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 78 locations, 4 error locations. SAFE Result, 0.4s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 261 SDtfs, 100 SDslu, 130 SDs, 0 SdLazy, 33 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=561occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 45 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 3403 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...