./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/16_peterson.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a2e8b332-e647-40b4-abbc-89fed2ccf606/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a2e8b332-e647-40b4-abbc-89fed2ccf606/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a2e8b332-e647-40b4-abbc-89fed2ccf606/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a2e8b332-e647-40b4-abbc-89fed2ccf606/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/16_peterson.i -s /tmp/vcloud-vcloud-master/worker/working_dir_a2e8b332-e647-40b4-abbc-89fed2ccf606/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a2e8b332-e647-40b4-abbc-89fed2ccf606/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe2a87bf03514f77a2923708fa633129c30ac7f0 ....................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:26:03,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:26:03,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:26:03,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:26:03,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:26:03,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:26:03,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:26:03,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:26:03,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:26:03,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:26:03,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:26:03,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:26:03,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:26:03,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:26:03,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:26:03,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:26:03,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:26:03,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:26:03,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:26:03,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:26:03,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:26:03,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:26:03,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:26:03,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:26:03,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:26:03,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:26:03,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:26:03,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:26:03,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:26:03,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:26:03,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:26:03,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:26:03,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:26:03,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:26:03,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:26:03,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:26:03,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:26:03,318 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:26:03,318 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:26:03,319 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:26:03,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:26:03,321 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a2e8b332-e647-40b4-abbc-89fed2ccf606/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:26:03,331 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:26:03,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:26:03,332 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:26:03,332 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:26:03,332 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:26:03,333 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:26:03,333 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:26:03,333 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:26:03,333 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:26:03,333 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:26:03,333 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:26:03,333 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:26:03,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:26:03,334 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:26:03,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:26:03,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:26:03,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:26:03,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:26:03,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:26:03,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:26:03,335 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:26:03,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:26:03,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:26:03,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:26:03,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:26:03,336 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:26:03,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:26:03,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:03,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:26:03,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:26:03,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:26:03,337 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:26:03,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:26:03,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:26:03,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:26:03,338 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_a2e8b332-e647-40b4-abbc-89fed2ccf606/bin/utaipan 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 -> Taipan 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 -> fe2a87bf03514f77a2923708fa633129c30ac7f0 [2019-10-22 11:26:03,363 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:26:03,375 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:26:03,378 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:26:03,379 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:26:03,380 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:26:03,381 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a2e8b332-e647-40b4-abbc-89fed2ccf606/bin/utaipan/../../sv-benchmarks/c/pthread-ext/16_peterson.i [2019-10-22 11:26:03,433 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a2e8b332-e647-40b4-abbc-89fed2ccf606/bin/utaipan/data/4172a8cbe/c2f5d5c4ea32472fb2c9914f1fa0267b/FLAGa4647ffbb [2019-10-22 11:26:03,842 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:26:03,842 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a2e8b332-e647-40b4-abbc-89fed2ccf606/sv-benchmarks/c/pthread-ext/16_peterson.i [2019-10-22 11:26:03,853 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a2e8b332-e647-40b4-abbc-89fed2ccf606/bin/utaipan/data/4172a8cbe/c2f5d5c4ea32472fb2c9914f1fa0267b/FLAGa4647ffbb [2019-10-22 11:26:03,863 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a2e8b332-e647-40b4-abbc-89fed2ccf606/bin/utaipan/data/4172a8cbe/c2f5d5c4ea32472fb2c9914f1fa0267b [2019-10-22 11:26:03,866 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:26:03,867 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:26:03,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:03,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:26:03,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:26:03,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:03" (1/1) ... [2019-10-22 11:26:03,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4deedcda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:03, skipping insertion in model container [2019-10-22 11:26:03,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:03" (1/1) ... [2019-10-22 11:26:03,888 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:26:03,922 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:26:04,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:04,326 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:26:04,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:04,445 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:26:04,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:04 WrapperNode [2019-10-22 11:26:04,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:04,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:04,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:26:04,447 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:26:04,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:04" (1/1) ... [2019-10-22 11:26:04,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:04" (1/1) ... [2019-10-22 11:26:04,486 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:04,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:26:04,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:26:04,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:26:04,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:04" (1/1) ... [2019-10-22 11:26:04,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:04" (1/1) ... [2019-10-22 11:26:04,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:04" (1/1) ... [2019-10-22 11:26:04,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:04" (1/1) ... [2019-10-22 11:26:04,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:04" (1/1) ... [2019-10-22 11:26:04,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:04" (1/1) ... [2019-10-22 11:26:04,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:04" (1/1) ... [2019-10-22 11:26:04,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:26:04,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:26:04,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:26:04,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:26:04,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a2e8b332-e647-40b4-abbc-89fed2ccf606/bin/utaipan/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 [2019-10-22 11:26:04,560 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-10-22 11:26:04,560 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-10-22 11:26:04,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:26:04,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:26:04,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:26:04,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:26:04,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:26:04,562 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-10-22 11:26:04,838 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:26:04,838 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-22 11:26:04,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:04 BoogieIcfgContainer [2019-10-22 11:26:04,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:26:04,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:26:04,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:26:04,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:26:04,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:26:03" (1/3) ... [2019-10-22 11:26:04,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d6e7b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:04, skipping insertion in model container [2019-10-22 11:26:04,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:04" (2/3) ... [2019-10-22 11:26:04,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d6e7b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:04, skipping insertion in model container [2019-10-22 11:26:04,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:04" (3/3) ... [2019-10-22 11:26:04,847 INFO L109 eAbstractionObserver]: Analyzing ICFG 16_peterson.i [2019-10-22 11:26:04,874 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:04,878 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:04,878 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:04,878 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:04,879 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:04,879 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:04,898 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-10-22 11:26:04,898 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:26:04,905 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:26:04,917 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:26:04,938 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:26:04,938 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:26:04,939 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:26:04,939 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:26:04,939 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:26:04,939 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:26:04,939 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:26:04,939 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:26:04,948 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 49 transitions [2019-10-22 11:26:04,985 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 275 states. [2019-10-22 11:26:04,990 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states. [2019-10-22 11:26:05,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 11:26:05,001 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:05,002 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:05,004 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:05,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:05,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1584676653, now seen corresponding path program 1 times [2019-10-22 11:26:05,018 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:05,018 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837961998] [2019-10-22 11:26:05,018 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:05,019 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:05,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:05,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:05,157 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837961998] [2019-10-22 11:26:05,158 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:05,158 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:26:05,159 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054657984] [2019-10-22 11:26:05,162 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:26:05,163 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:05,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:26:05,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:26:05,175 INFO L87 Difference]: Start difference. First operand 275 states. Second operand 2 states. [2019-10-22 11:26:05,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:05,197 INFO L93 Difference]: Finished difference Result 275 states and 539 transitions. [2019-10-22 11:26:05,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:26:05,198 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-10-22 11:26:05,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:05,209 INFO L225 Difference]: With dead ends: 275 [2019-10-22 11:26:05,209 INFO L226 Difference]: Without dead ends: 235 [2019-10-22 11:26:05,210 INFO L600 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 [2019-10-22 11:26:05,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2019-10-22 11:26:05,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2019-10-22 11:26:05,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2019-10-22 11:26:05,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 459 transitions. [2019-10-22 11:26:05,265 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 459 transitions. Word has length 18 [2019-10-22 11:26:05,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:05,266 INFO L462 AbstractCegarLoop]: Abstraction has 235 states and 459 transitions. [2019-10-22 11:26:05,266 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:26:05,266 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 459 transitions. [2019-10-22 11:26:05,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 11:26:05,267 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:05,267 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:05,267 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:05,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:05,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1584706444, now seen corresponding path program 1 times [2019-10-22 11:26:05,267 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:05,268 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480368006] [2019-10-22 11:26:05,268 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:05,268 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:05,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:05,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:05,329 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480368006] [2019-10-22 11:26:05,329 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:05,329 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:26:05,329 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619100077] [2019-10-22 11:26:05,330 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:05,331 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:05,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:05,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:05,332 INFO L87 Difference]: Start difference. First operand 235 states and 459 transitions. Second operand 3 states. [2019-10-22 11:26:05,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:05,358 INFO L93 Difference]: Finished difference Result 242 states and 452 transitions. [2019-10-22 11:26:05,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:05,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-10-22 11:26:05,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:05,361 INFO L225 Difference]: With dead ends: 242 [2019-10-22 11:26:05,361 INFO L226 Difference]: Without dead ends: 182 [2019-10-22 11:26:05,361 INFO L600 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 [2019-10-22 11:26:05,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2019-10-22 11:26:05,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 170. [2019-10-22 11:26:05,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2019-10-22 11:26:05,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 316 transitions. [2019-10-22 11:26:05,373 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 316 transitions. Word has length 18 [2019-10-22 11:26:05,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:05,373 INFO L462 AbstractCegarLoop]: Abstraction has 170 states and 316 transitions. [2019-10-22 11:26:05,373 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:05,373 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 316 transitions. [2019-10-22 11:26:05,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:26:05,374 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:05,375 INFO L380 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] [2019-10-22 11:26:05,375 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:05,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:05,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1073217714, now seen corresponding path program 1 times [2019-10-22 11:26:05,375 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:05,376 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216711120] [2019-10-22 11:26:05,376 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:05,376 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:05,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:05,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:05,417 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216711120] [2019-10-22 11:26:05,417 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:05,418 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:26:05,418 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749533071] [2019-10-22 11:26:05,418 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:05,418 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:05,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:05,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:05,419 INFO L87 Difference]: Start difference. First operand 170 states and 316 transitions. Second operand 3 states. [2019-10-22 11:26:05,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:05,437 INFO L93 Difference]: Finished difference Result 158 states and 284 transitions. [2019-10-22 11:26:05,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:05,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-10-22 11:26:05,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:05,439 INFO L225 Difference]: With dead ends: 158 [2019-10-22 11:26:05,439 INFO L226 Difference]: Without dead ends: 118 [2019-10-22 11:26:05,439 INFO L600 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 [2019-10-22 11:26:05,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2019-10-22 11:26:05,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2019-10-22 11:26:05,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2019-10-22 11:26:05,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 205 transitions. [2019-10-22 11:26:05,447 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 205 transitions. Word has length 22 [2019-10-22 11:26:05,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:05,447 INFO L462 AbstractCegarLoop]: Abstraction has 118 states and 205 transitions. [2019-10-22 11:26:05,447 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:05,447 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 205 transitions. [2019-10-22 11:26:05,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-22 11:26:05,448 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:05,448 INFO L380 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] [2019-10-22 11:26:05,449 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:05,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:05,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1732783708, now seen corresponding path program 1 times [2019-10-22 11:26:05,449 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:05,449 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456538017] [2019-10-22 11:26:05,449 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:05,450 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:05,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:05,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:05,504 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456538017] [2019-10-22 11:26:05,504 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:05,505 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:26:05,505 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144917754] [2019-10-22 11:26:05,505 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:26:05,505 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:05,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:26:05,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:26:05,506 INFO L87 Difference]: Start difference. First operand 118 states and 205 transitions. Second operand 4 states. [2019-10-22 11:26:05,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:05,532 INFO L93 Difference]: Finished difference Result 124 states and 216 transitions. [2019-10-22 11:26:05,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:26:05,533 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2019-10-22 11:26:05,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:05,534 INFO L225 Difference]: With dead ends: 124 [2019-10-22 11:26:05,534 INFO L226 Difference]: Without dead ends: 100 [2019-10-22 11:26:05,534 INFO L600 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 [2019-10-22 11:26:05,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2019-10-22 11:26:05,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2019-10-22 11:26:05,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-10-22 11:26:05,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 159 transitions. [2019-10-22 11:26:05,540 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 159 transitions. Word has length 27 [2019-10-22 11:26:05,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:05,540 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 159 transitions. [2019-10-22 11:26:05,540 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:26:05,541 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 159 transitions. [2019-10-22 11:26:05,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-22 11:26:05,541 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:05,541 INFO L380 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] [2019-10-22 11:26:05,542 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:05,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:05,542 INFO L82 PathProgramCache]: Analyzing trace with hash -710803062, now seen corresponding path program 2 times [2019-10-22 11:26:05,542 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:05,542 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659965805] [2019-10-22 11:26:05,542 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:05,543 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:05,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:05,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:05,600 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659965805] [2019-10-22 11:26:05,600 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:05,601 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:26:05,601 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029769939] [2019-10-22 11:26:05,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:26:05,601 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:05,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:26:05,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:26:05,602 INFO L87 Difference]: Start difference. First operand 100 states and 159 transitions. Second operand 4 states. [2019-10-22 11:26:05,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:05,614 INFO L93 Difference]: Finished difference Result 47 states and 75 transitions. [2019-10-22 11:26:05,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:26:05,615 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2019-10-22 11:26:05,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:05,615 INFO L225 Difference]: With dead ends: 47 [2019-10-22 11:26:05,615 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:26:05,616 INFO L600 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 [2019-10-22 11:26:05,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:26:05,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:26:05,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:26:05,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:26:05,616 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2019-10-22 11:26:05,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:05,617 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:26:05,617 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:26:05,617 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:26:05,617 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:26:05,619 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-10-22 11:26:05,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:26:05 BasicIcfg [2019-10-22 11:26:05,622 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:26:05,622 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:26:05,622 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:26:05,622 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:26:05,623 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:04" (3/4) ... [2019-10-22 11:26:05,626 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:26:05,632 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2019-10-22 11:26:05,635 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-10-22 11:26:05,636 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 11:26:05,670 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a2e8b332-e647-40b4-abbc-89fed2ccf606/bin/utaipan/witness.graphml [2019-10-22 11:26:05,670 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:26:05,672 INFO L168 Benchmark]: Toolchain (without parser) took 1804.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 939.2 MB in the beginning and 1.0 GB in the end (delta: -107.4 MB). Peak memory consumption was 59.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:05,672 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:05,673 INFO L168 Benchmark]: CACSL2BoogieTranslator took 578.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 939.2 MB in the beginning and 1.1 GB in the end (delta: -203.4 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:05,673 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:05,674 INFO L168 Benchmark]: Boogie Preprocessor took 22.85 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:05,674 INFO L168 Benchmark]: RCFGBuilder took 330.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:05,674 INFO L168 Benchmark]: TraceAbstraction took 780.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 67.8 MB). Peak memory consumption was 67.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:05,675 INFO L168 Benchmark]: Witness Printer took 48.18 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:05,677 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 578.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 939.2 MB in the beginning and 1.1 GB in the end (delta: -203.4 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.85 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 330.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 780.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 67.8 MB). Peak memory consumption was 67.8 MB. Max. memory is 11.5 GB. * Witness Printer took 48.18 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 681]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 690]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 681]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 57 locations, 3 error locations. Result: SAFE, OverallTime: 0.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 235 SDtfs, 88 SDslu, 116 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=275occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 3539 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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...