./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe029_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9120b2-4a1a-4d48-a297-5de3d7624f8b/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9120b2-4a1a-4d48-a297-5de3d7624f8b/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9120b2-4a1a-4d48-a297-5de3d7624f8b/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9120b2-4a1a-4d48-a297-5de3d7624f8b/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe029_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9120b2-4a1a-4d48-a297-5de3d7624f8b/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9120b2-4a1a-4d48-a297-5de3d7624f8b/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef851e22a0a98929f1b90876fcac5ec793e10efa4691f239ca948c8dc39b94fd ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:56:15,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:56:15,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:56:15,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:56:15,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:56:15,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:56:15,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:56:15,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:56:15,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:56:15,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:56:15,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:56:15,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:56:15,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:56:15,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:56:15,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:56:15,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:56:15,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:56:15,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:56:15,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:56:15,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:56:15,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:56:15,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:56:15,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:56:15,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:56:15,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:56:15,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:56:15,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:56:15,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:56:15,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:56:15,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:56:15,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:56:15,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:56:15,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:56:15,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:56:15,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:56:15,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:56:15,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:56:15,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:56:15,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:56:15,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:56:15,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:56:15,346 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9120b2-4a1a-4d48-a297-5de3d7624f8b/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:56:15,408 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:56:15,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:56:15,409 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:56:15,410 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:56:15,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:56:15,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:56:15,412 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:56:15,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:56:15,412 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:56:15,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:56:15,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:56:15,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:56:15,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:56:15,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:56:15,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:56:15,416 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:56:15,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:56:15,416 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:56:15,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:56:15,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:56:15,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:56:15,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:56:15,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:56:15,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:56:15,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:56:15,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:56:15,419 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:56:15,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:56:15,419 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:56:15,421 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:56:15,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:56:15,422 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:56:15,422 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9120b2-4a1a-4d48-a297-5de3d7624f8b/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9120b2-4a1a-4d48-a297-5de3d7624f8b/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef851e22a0a98929f1b90876fcac5ec793e10efa4691f239ca948c8dc39b94fd [2021-10-21 19:56:15,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:56:15,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:56:15,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:56:15,792 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:56:15,793 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:56:15,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9120b2-4a1a-4d48-a297-5de3d7624f8b/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/pthread-wmm/safe029_tso.i [2021-10-21 19:56:15,875 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9120b2-4a1a-4d48-a297-5de3d7624f8b/bin/uautomizer-j4sWxH34Be/data/f8932751b/b299267dcff54bcf8a6ba667c468fcc8/FLAG91b686f25 [2021-10-21 19:56:16,493 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:56:16,493 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9120b2-4a1a-4d48-a297-5de3d7624f8b/sv-benchmarks/c/pthread-wmm/safe029_tso.i [2021-10-21 19:56:16,509 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9120b2-4a1a-4d48-a297-5de3d7624f8b/bin/uautomizer-j4sWxH34Be/data/f8932751b/b299267dcff54bcf8a6ba667c468fcc8/FLAG91b686f25 [2021-10-21 19:56:16,753 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9120b2-4a1a-4d48-a297-5de3d7624f8b/bin/uautomizer-j4sWxH34Be/data/f8932751b/b299267dcff54bcf8a6ba667c468fcc8 [2021-10-21 19:56:16,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:56:16,758 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:56:16,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:56:16,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:56:16,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:56:16,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:56:16" (1/1) ... [2021-10-21 19:56:16,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63b19615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:56:16, skipping insertion in model container [2021-10-21 19:56:16,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:56:16" (1/1) ... [2021-10-21 19:56:16,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:56:16,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:56:17,044 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9120b2-4a1a-4d48-a297-5de3d7624f8b/sv-benchmarks/c/pthread-wmm/safe029_tso.i[945,958] [2021-10-21 19:56:17,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:56:17,320 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:56:17,341 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9120b2-4a1a-4d48-a297-5de3d7624f8b/sv-benchmarks/c/pthread-wmm/safe029_tso.i[945,958] [2021-10-21 19:56:17,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:56:17,436 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:56:17,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:56:17 WrapperNode [2021-10-21 19:56:17,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:56:17,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:56:17,439 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:56:17,439 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:56:17,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:56:17" (1/1) ... [2021-10-21 19:56:17,497 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:56:17" (1/1) ... [2021-10-21 19:56:17,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:56:17,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:56:17,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:56:17,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:56:17,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:56:17" (1/1) ... [2021-10-21 19:56:17,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:56:17" (1/1) ... [2021-10-21 19:56:17,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:56:17" (1/1) ... [2021-10-21 19:56:17,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:56:17" (1/1) ... [2021-10-21 19:56:17,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:56:17" (1/1) ... [2021-10-21 19:56:17,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:56:17" (1/1) ... [2021-10-21 19:56:17,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:56:17" (1/1) ... [2021-10-21 19:56:17,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:56:17,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:56:17,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:56:17,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:56:17,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:56:17" (1/1) ... [2021-10-21 19:56:17,560 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:56:17,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9120b2-4a1a-4d48-a297-5de3d7624f8b/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:56:17,585 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9120b2-4a1a-4d48-a297-5de3d7624f8b/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:56:17,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9120b2-4a1a-4d48-a297-5de3d7624f8b/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:56:17,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:56:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-21 19:56:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:56:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:56:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-21 19:56:17,653 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-21 19:56:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-21 19:56:17,654 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-21 19:56:17,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:56:17,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-21 19:56:17,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:56:17,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:56:17,657 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-21 19:56:18,091 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:56:18,092 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-21 19:56:18,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:56:18 BoogieIcfgContainer [2021-10-21 19:56:18,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:56:18,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:56:18,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:56:18,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:56:18,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:56:16" (1/3) ... [2021-10-21 19:56:18,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d5f6ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:56:18, skipping insertion in model container [2021-10-21 19:56:18,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:56:17" (2/3) ... [2021-10-21 19:56:18,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d5f6ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:56:18, skipping insertion in model container [2021-10-21 19:56:18,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:56:18" (3/3) ... [2021-10-21 19:56:18,104 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_tso.i [2021-10-21 19:56:18,110 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-21 19:56:18,110 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:56:18,111 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:56:18,111 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-21 19:56:18,140 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,140 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,140 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,140 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,141 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,141 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,141 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,142 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,142 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,142 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,143 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,143 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,143 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,144 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,144 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,144 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,145 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,145 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,145 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,145 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,146 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,146 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,146 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,146 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,150 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,150 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,151 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,151 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,160 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,161 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,163 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,164 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:56:18,167 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-21 19:56:18,224 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:56:18,231 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:56:18,231 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-21 19:56:18,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 65 transitions, 140 flow [2021-10-21 19:56:18,315 INFO L129 PetriNetUnfolder]: 2/63 cut-off events. [2021-10-21 19:56:18,322 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 19:56:18,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 63 events. 2/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-10-21 19:56:18,325 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 65 transitions, 140 flow [2021-10-21 19:56:18,330 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 53 transitions, 112 flow [2021-10-21 19:56:18,349 INFO L129 PetriNetUnfolder]: 1/52 cut-off events. [2021-10-21 19:56:18,350 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 19:56:18,350 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:56:18,351 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:56:18,351 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 19:56:18,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:56:18,357 INFO L82 PathProgramCache]: Analyzing trace with hash -220175111, now seen corresponding path program 1 times [2021-10-21 19:56:18,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:56:18,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873623155] [2021-10-21 19:56:18,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:56:18,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:56:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:56:18,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:56:18,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:56:18,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873623155] [2021-10-21 19:56:18,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873623155] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:56:18,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:56:18,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 19:56:18,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39861805] [2021-10-21 19:56:19,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:56:19,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:56:19,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:56:19,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:56:19,030 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 65 [2021-10-21 19:56:19,038 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 112 flow. Second operand has 8 states, 8 states have (on average 46.25) internal successors, (370), 8 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:19,039 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:56:19,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 65 [2021-10-21 19:56:19,041 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:56:19,974 INFO L129 PetriNetUnfolder]: 260/605 cut-off events. [2021-10-21 19:56:19,975 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 19:56:19,982 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1076 conditions, 605 events. 260/605 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3095 event pairs, 8 based on Foata normal form. 35/623 useless extension candidates. Maximal degree in co-relation 1047. Up to 110 conditions per place. [2021-10-21 19:56:19,993 INFO L132 encePairwiseOnDemand]: 52/65 looper letters, 33 selfloop transitions, 16 changer transitions 84/169 dead transitions. [2021-10-21 19:56:19,993 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 169 transitions, 610 flow [2021-10-21 19:56:19,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-21 19:56:19,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-21 19:56:20,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1088 transitions. [2021-10-21 19:56:20,023 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7970695970695971 [2021-10-21 19:56:20,024 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1088 transitions. [2021-10-21 19:56:20,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1088 transitions. [2021-10-21 19:56:20,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:56:20,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1088 transitions. [2021-10-21 19:56:20,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 51.80952380952381) internal successors, (1088), 21 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:20,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 65.0) internal successors, (1430), 22 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:20,061 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 65.0) internal successors, (1430), 22 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:20,064 INFO L186 Difference]: Start difference. First operand has 59 places, 53 transitions, 112 flow. Second operand 21 states and 1088 transitions. [2021-10-21 19:56:20,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 169 transitions, 610 flow [2021-10-21 19:56:20,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 169 transitions, 608 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-21 19:56:20,104 INFO L242 Difference]: Finished difference. Result has 97 places, 66 transitions, 276 flow [2021-10-21 19:56:20,107 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=276, PETRI_PLACES=97, PETRI_TRANSITIONS=66} [2021-10-21 19:56:20,109 INFO L334 CegarLoopForPetriNet]: 59 programPoint places, 38 predicate places. [2021-10-21 19:56:20,109 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 66 transitions, 276 flow [2021-10-21 19:56:20,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 46.25) internal successors, (370), 8 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:20,111 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:56:20,111 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:56:20,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:56:20,112 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 19:56:20,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:56:20,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1018961222, now seen corresponding path program 1 times [2021-10-21 19:56:20,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:56:20,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068119501] [2021-10-21 19:56:20,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:56:20,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:56:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:56:20,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:56:20,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:56:20,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068119501] [2021-10-21 19:56:20,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068119501] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:56:20,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:56:20,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 19:56:20,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868885642] [2021-10-21 19:56:20,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:56:20,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:56:20,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:56:20,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:56:20,365 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 65 [2021-10-21 19:56:20,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 66 transitions, 276 flow. Second operand has 8 states, 8 states have (on average 49.125) internal successors, (393), 8 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:20,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:56:20,366 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 65 [2021-10-21 19:56:20,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:56:21,080 INFO L129 PetriNetUnfolder]: 190/582 cut-off events. [2021-10-21 19:56:21,080 INFO L130 PetriNetUnfolder]: For 2475/2554 co-relation queries the response was YES. [2021-10-21 19:56:21,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1952 conditions, 582 events. 190/582 cut-off events. For 2475/2554 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3492 event pairs, 0 based on Foata normal form. 35/610 useless extension candidates. Maximal degree in co-relation 1902. Up to 141 conditions per place. [2021-10-21 19:56:21,090 INFO L132 encePairwiseOnDemand]: 55/65 looper letters, 28 selfloop transitions, 16 changer transitions 64/153 dead transitions. [2021-10-21 19:56:21,090 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 153 transitions, 1176 flow [2021-10-21 19:56:21,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-21 19:56:21,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-21 19:56:21,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1111 transitions. [2021-10-21 19:56:21,096 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8139194139194139 [2021-10-21 19:56:21,097 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1111 transitions. [2021-10-21 19:56:21,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1111 transitions. [2021-10-21 19:56:21,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:56:21,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1111 transitions. [2021-10-21 19:56:21,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 52.904761904761905) internal successors, (1111), 21 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:21,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 65.0) internal successors, (1430), 22 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:21,110 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 65.0) internal successors, (1430), 22 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:21,110 INFO L186 Difference]: Start difference. First operand has 97 places, 66 transitions, 276 flow. Second operand 21 states and 1111 transitions. [2021-10-21 19:56:21,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 153 transitions, 1176 flow [2021-10-21 19:56:21,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 153 transitions, 964 flow, removed 106 selfloop flow, removed 9 redundant places. [2021-10-21 19:56:21,136 INFO L242 Difference]: Finished difference. Result has 109 places, 70 transitions, 341 flow [2021-10-21 19:56:21,137 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=341, PETRI_PLACES=109, PETRI_TRANSITIONS=70} [2021-10-21 19:56:21,137 INFO L334 CegarLoopForPetriNet]: 59 programPoint places, 50 predicate places. [2021-10-21 19:56:21,138 INFO L470 AbstractCegarLoop]: Abstraction has has 109 places, 70 transitions, 341 flow [2021-10-21 19:56:21,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 49.125) internal successors, (393), 8 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:21,138 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:56:21,140 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:56:21,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:56:21,140 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 19:56:21,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:56:21,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1408019401, now seen corresponding path program 1 times [2021-10-21 19:56:21,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:56:21,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284434134] [2021-10-21 19:56:21,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:56:21,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:56:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:56:21,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:56:21,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:56:21,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284434134] [2021-10-21 19:56:21,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284434134] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:56:21,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:56:21,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:56:21,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301159976] [2021-10-21 19:56:21,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:56:21,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:56:21,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:56:21,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:56:21,413 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 65 [2021-10-21 19:56:21,414 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 70 transitions, 341 flow. Second operand has 6 states, 6 states have (on average 53.166666666666664) internal successors, (319), 6 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:21,415 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:56:21,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 65 [2021-10-21 19:56:21,415 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:56:21,617 INFO L129 PetriNetUnfolder]: 108/381 cut-off events. [2021-10-21 19:56:21,618 INFO L130 PetriNetUnfolder]: For 597/913 co-relation queries the response was YES. [2021-10-21 19:56:21,622 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1025 conditions, 381 events. 108/381 cut-off events. For 597/913 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2444 event pairs, 0 based on Foata normal form. 10/357 useless extension candidates. Maximal degree in co-relation 977. Up to 116 conditions per place. [2021-10-21 19:56:21,624 INFO L132 encePairwiseOnDemand]: 56/65 looper letters, 6 selfloop transitions, 8 changer transitions 37/99 dead transitions. [2021-10-21 19:56:21,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 99 transitions, 577 flow [2021-10-21 19:56:21,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:56:21,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-21 19:56:21,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 555 transitions. [2021-10-21 19:56:21,628 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8538461538461538 [2021-10-21 19:56:21,628 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 555 transitions. [2021-10-21 19:56:21,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 555 transitions. [2021-10-21 19:56:21,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:56:21,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 555 transitions. [2021-10-21 19:56:21,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 55.5) internal successors, (555), 10 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:21,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 65.0) internal successors, (715), 11 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:21,635 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 65.0) internal successors, (715), 11 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:21,635 INFO L186 Difference]: Start difference. First operand has 109 places, 70 transitions, 341 flow. Second operand 10 states and 555 transitions. [2021-10-21 19:56:21,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 99 transitions, 577 flow [2021-10-21 19:56:21,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 99 transitions, 505 flow, removed 33 selfloop flow, removed 20 redundant places. [2021-10-21 19:56:21,648 INFO L242 Difference]: Finished difference. Result has 89 places, 62 transitions, 251 flow [2021-10-21 19:56:21,649 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=251, PETRI_PLACES=89, PETRI_TRANSITIONS=62} [2021-10-21 19:56:21,649 INFO L334 CegarLoopForPetriNet]: 59 programPoint places, 30 predicate places. [2021-10-21 19:56:21,649 INFO L470 AbstractCegarLoop]: Abstraction has has 89 places, 62 transitions, 251 flow [2021-10-21 19:56:21,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.166666666666664) internal successors, (319), 6 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:21,650 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:56:21,650 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:56:21,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:56:21,651 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 19:56:21,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:56:21,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1847122932, now seen corresponding path program 1 times [2021-10-21 19:56:21,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:56:21,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027571256] [2021-10-21 19:56:21,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:56:21,653 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:56:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:56:21,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:56:21,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:56:21,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027571256] [2021-10-21 19:56:21,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027571256] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:56:21,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:56:21,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:56:21,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981205102] [2021-10-21 19:56:21,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:56:21,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:56:21,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:56:21,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:56:21,874 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 65 [2021-10-21 19:56:21,874 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 62 transitions, 251 flow. Second operand has 7 states, 7 states have (on average 53.142857142857146) internal successors, (372), 7 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:21,875 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:56:21,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 65 [2021-10-21 19:56:21,875 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:56:22,010 INFO L129 PetriNetUnfolder]: 10/106 cut-off events. [2021-10-21 19:56:22,011 INFO L130 PetriNetUnfolder]: For 91/101 co-relation queries the response was YES. [2021-10-21 19:56:22,011 INFO L84 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 106 events. 10/106 cut-off events. For 91/101 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 342 event pairs, 0 based on Foata normal form. 5/110 useless extension candidates. Maximal degree in co-relation 261. Up to 16 conditions per place. [2021-10-21 19:56:22,016 INFO L132 encePairwiseOnDemand]: 56/65 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2021-10-21 19:56:22,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 69 transitions, 348 flow [2021-10-21 19:56:22,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:56:22,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-21 19:56:22,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 599 transitions. [2021-10-21 19:56:22,020 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8377622377622378 [2021-10-21 19:56:22,020 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 599 transitions. [2021-10-21 19:56:22,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 599 transitions. [2021-10-21 19:56:22,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:56:22,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 599 transitions. [2021-10-21 19:56:22,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 54.45454545454545) internal successors, (599), 11 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:22,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 65.0) internal successors, (780), 12 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:22,029 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 65.0) internal successors, (780), 12 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:22,030 INFO L186 Difference]: Start difference. First operand has 89 places, 62 transitions, 251 flow. Second operand 11 states and 599 transitions. [2021-10-21 19:56:22,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 69 transitions, 348 flow [2021-10-21 19:56:22,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 69 transitions, 268 flow, removed 14 selfloop flow, removed 13 redundant places. [2021-10-21 19:56:22,034 INFO L242 Difference]: Finished difference. Result has 76 places, 0 transitions, 0 flow [2021-10-21 19:56:22,034 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=76, PETRI_TRANSITIONS=0} [2021-10-21 19:56:22,035 INFO L334 CegarLoopForPetriNet]: 59 programPoint places, 17 predicate places. [2021-10-21 19:56:22,035 INFO L470 AbstractCegarLoop]: Abstraction has has 76 places, 0 transitions, 0 flow [2021-10-21 19:56:22,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.142857142857146) internal successors, (372), 7 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:22,038 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:56:22,039 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-21 19:56:22,039 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-21 19:56:22,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:56:22,049 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-21 19:56:22,049 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:56:22,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:56:22 BasicIcfg [2021-10-21 19:56:22,052 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:56:22,053 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:56:22,053 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:56:22,053 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:56:22,054 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:56:18" (3/4) ... [2021-10-21 19:56:22,057 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:56:22,065 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-21 19:56:22,065 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-21 19:56:22,072 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-21 19:56:22,072 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 19:56:22,073 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:56:22,073 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:56:22,133 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9120b2-4a1a-4d48-a297-5de3d7624f8b/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:56:22,139 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:56:22,141 INFO L168 Benchmark]: Toolchain (without parser) took 5381.71 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 68.1 MB in the beginning and 46.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 43.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:56:22,142 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 109.1 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:56:22,143 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.44 ms. Allocated memory is still 109.1 MB. Free memory was 67.9 MB in the beginning and 72.4 MB in the end (delta: -4.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:56:22,143 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.76 ms. Allocated memory is still 109.1 MB. Free memory was 72.1 MB in the beginning and 70.4 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:56:22,144 INFO L168 Benchmark]: Boogie Preprocessor took 27.54 ms. Allocated memory is still 109.1 MB. Free memory was 70.4 MB in the beginning and 69.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:56:22,144 INFO L168 Benchmark]: RCFGBuilder took 544.45 ms. Allocated memory is still 109.1 MB. Free memory was 69.1 MB in the beginning and 57.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:56:22,145 INFO L168 Benchmark]: TraceAbstraction took 3955.80 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 57.2 MB in the beginning and 48.2 MB in the end (delta: 8.9 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:56:22,145 INFO L168 Benchmark]: Witness Printer took 86.26 ms. Allocated memory is still 132.1 MB. Free memory was 48.2 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:56:22,148 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 109.1 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 677.44 ms. Allocated memory is still 109.1 MB. Free memory was 67.9 MB in the beginning and 72.4 MB in the end (delta: -4.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.76 ms. Allocated memory is still 109.1 MB. Free memory was 72.1 MB in the beginning and 70.4 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.54 ms. Allocated memory is still 109.1 MB. Free memory was 70.4 MB in the beginning and 69.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 544.45 ms. Allocated memory is still 109.1 MB. Free memory was 69.1 MB in the beginning and 57.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3955.80 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 57.2 MB in the beginning and 48.2 MB in the end (delta: 8.9 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. * Witness Printer took 86.26 ms. Allocated memory is still 132.1 MB. Free memory was 48.2 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 80 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 19.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3825.9ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2271.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 99.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 55 SDtfs, 240 SDslu, 199 SDs, 0 SdLazy, 300 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 369.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1041.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=341occurred in iteration=2, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 39.6ms SsaConstructionTime, 225.9ms SatisfiabilityAnalysisTime, 917.9ms InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 164 ConstructedInterpolants, 0 QuantifiedInterpolants, 721 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-21 19:56:22,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9120b2-4a1a-4d48-a297-5de3d7624f8b/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...