./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/lamport.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ca4222a-0c6c-4557-bb67-2ea8a5dbaf4d/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ca4222a-0c6c-4557-bb67-2ea8a5dbaf4d/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ca4222a-0c6c-4557-bb67-2ea8a5dbaf4d/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ca4222a-0c6c-4557-bb67-2ea8a5dbaf4d/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/lamport.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ca4222a-0c6c-4557-bb67-2ea8a5dbaf4d/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ca4222a-0c6c-4557-bb67-2ea8a5dbaf4d/bin/uautomizer-ug76WZFUDN --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 c35b909c90b92e30d40b0275e3d226db26dbebaf39dc73a31d7e72eee871d214 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:18:11,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:18:11,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:18:11,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:18:11,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:18:11,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:18:11,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:18:11,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:18:11,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:18:11,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:18:11,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:18:11,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:18:11,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:18:11,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:18:11,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:18:11,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:18:11,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:18:11,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:18:11,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:18:11,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:18:11,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:18:11,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:18:11,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:18:11,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:18:11,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:18:11,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:18:11,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:18:11,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:18:11,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:18:11,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:18:11,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:18:11,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:18:11,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:18:11,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:18:11,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:18:11,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:18:11,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:18:11,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:18:11,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:18:11,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:18:11,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:18:11,520 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ca4222a-0c6c-4557-bb67-2ea8a5dbaf4d/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:18:11,543 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:18:11,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:18:11,544 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:18:11,544 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:18:11,545 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:18:11,545 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:18:11,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:18:11,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:18:11,546 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:18:11,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:18:11,546 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:18:11,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:18:11,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:18:11,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:18:11,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:18:11,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:18:11,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:18:11,548 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:18:11,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:18:11,548 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:18:11,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:18:11,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:18:11,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:18:11,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:18:11,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:18:11,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:18:11,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:18:11,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:18:11,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:18:11,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:18:11,550 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:18:11,550 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:18:11,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:18:11,551 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_7ca4222a-0c6c-4557-bb67-2ea8a5dbaf4d/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ca4222a-0c6c-4557-bb67-2ea8a5dbaf4d/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c35b909c90b92e30d40b0275e3d226db26dbebaf39dc73a31d7e72eee871d214 [2022-11-20 11:18:11,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:18:11,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:18:11,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:18:11,893 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:18:11,893 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:18:11,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ca4222a-0c6c-4557-bb67-2ea8a5dbaf4d/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread-atomic/lamport.i [2022-11-20 11:18:15,127 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:18:15,456 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:18:15,458 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ca4222a-0c6c-4557-bb67-2ea8a5dbaf4d/sv-benchmarks/c/pthread-atomic/lamport.i [2022-11-20 11:18:15,478 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ca4222a-0c6c-4557-bb67-2ea8a5dbaf4d/bin/uautomizer-ug76WZFUDN/data/f586aca2e/159870ac4b124f04be6126bea8ad512c/FLAGfe75e11d9 [2022-11-20 11:18:15,503 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ca4222a-0c6c-4557-bb67-2ea8a5dbaf4d/bin/uautomizer-ug76WZFUDN/data/f586aca2e/159870ac4b124f04be6126bea8ad512c [2022-11-20 11:18:15,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:18:15,510 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:18:15,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:18:15,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:18:15,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:18:15,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:18:15" (1/1) ... [2022-11-20 11:18:15,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67408e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:15, skipping insertion in model container [2022-11-20 11:18:15,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:18:15" (1/1) ... [2022-11-20 11:18:15,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:18:15,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:18:15,849 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 11:18:16,074 WARN L237 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_7ca4222a-0c6c-4557-bb67-2ea8a5dbaf4d/sv-benchmarks/c/pthread-atomic/lamport.i[32156,32169] [2022-11-20 11:18:16,087 WARN L237 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_7ca4222a-0c6c-4557-bb67-2ea8a5dbaf4d/sv-benchmarks/c/pthread-atomic/lamport.i[34083,34096] [2022-11-20 11:18:16,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:18:16,116 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:18:16,141 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 11:18:16,170 WARN L237 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_7ca4222a-0c6c-4557-bb67-2ea8a5dbaf4d/sv-benchmarks/c/pthread-atomic/lamport.i[32156,32169] [2022-11-20 11:18:16,183 WARN L237 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_7ca4222a-0c6c-4557-bb67-2ea8a5dbaf4d/sv-benchmarks/c/pthread-atomic/lamport.i[34083,34096] [2022-11-20 11:18:16,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:18:16,228 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:18:16,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:16 WrapperNode [2022-11-20 11:18:16,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:18:16,230 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:18:16,230 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:18:16,230 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:18:16,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:16" (1/1) ... [2022-11-20 11:18:16,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:16" (1/1) ... [2022-11-20 11:18:16,292 INFO L138 Inliner]: procedures = 171, calls = 83, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2022-11-20 11:18:16,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:18:16,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:18:16,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:18:16,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:18:16,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:16" (1/1) ... [2022-11-20 11:18:16,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:16" (1/1) ... [2022-11-20 11:18:16,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:16" (1/1) ... [2022-11-20 11:18:16,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:16" (1/1) ... [2022-11-20 11:18:16,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:16" (1/1) ... [2022-11-20 11:18:16,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:16" (1/1) ... [2022-11-20 11:18:16,355 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:16" (1/1) ... [2022-11-20 11:18:16,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:16" (1/1) ... [2022-11-20 11:18:16,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:18:16,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:18:16,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:18:16,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:18:16,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:16" (1/1) ... [2022-11-20 11:18:16,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:18:16,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ca4222a-0c6c-4557-bb67-2ea8a5dbaf4d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:18:16,415 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ca4222a-0c6c-4557-bb67-2ea8a5dbaf4d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:18:16,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ca4222a-0c6c-4557-bb67-2ea8a5dbaf4d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:18:16,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:18:16,471 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-11-20 11:18:16,472 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-11-20 11:18:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-20 11:18:16,472 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-20 11:18:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:18:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:18:16,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:18:16,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:18:16,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:18:16,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:18:16,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:18:16,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:18:16,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:18:16,477 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:18:16,650 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:18:16,653 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:18:16,902 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:18:16,910 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:18:16,911 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-20 11:18:16,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:18:16 BoogieIcfgContainer [2022-11-20 11:18:16,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:18:16,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:18:16,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:18:16,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:18:16,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:18:15" (1/3) ... [2022-11-20 11:18:16,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eda1ac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:18:16, skipping insertion in model container [2022-11-20 11:18:16,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:16" (2/3) ... [2022-11-20 11:18:16,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eda1ac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:18:16, skipping insertion in model container [2022-11-20 11:18:16,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:18:16" (3/3) ... [2022-11-20 11:18:16,924 INFO L112 eAbstractionObserver]: Analyzing ICFG lamport.i [2022-11-20 11:18:16,934 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:18:16,947 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:18:16,947 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 11:18:16,947 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:18:17,042 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 11:18:17,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 133 transitions, 282 flow [2022-11-20 11:18:17,143 INFO L130 PetriNetUnfolder]: 24/131 cut-off events. [2022-11-20 11:18:17,144 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:18:17,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 131 events. 24/131 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 253 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 97. Up to 5 conditions per place. [2022-11-20 11:18:17,153 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 133 transitions, 282 flow [2022-11-20 11:18:17,161 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 121 transitions, 251 flow [2022-11-20 11:18:17,173 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:18:17,178 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@485b5d88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:18:17,179 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-20 11:18:17,190 INFO L130 PetriNetUnfolder]: 2/39 cut-off events. [2022-11-20 11:18:17,190 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:18:17,191 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:18:17,191 INFO L209 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] [2022-11-20 11:18:17,192 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-20 11:18:17,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:17,198 INFO L85 PathProgramCache]: Analyzing trace with hash 513087575, now seen corresponding path program 1 times [2022-11-20 11:18:17,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:17,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703402507] [2022-11-20 11:18:17,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:17,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:17,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:18:17,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:17,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703402507] [2022-11-20 11:18:17,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703402507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:17,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:18:17,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:18:17,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649052888] [2022-11-20 11:18:17,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:17,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:18:17,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:17,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:18:17,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:18:17,594 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 133 [2022-11-20 11:18:17,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 121 transitions, 251 flow. Second operand has 2 states, 2 states have (on average 118.0) internal successors, (236), 2 states have internal predecessors, (236), 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) [2022-11-20 11:18:17,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:18:17,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 133 [2022-11-20 11:18:17,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:18:17,657 INFO L130 PetriNetUnfolder]: 12/109 cut-off events. [2022-11-20 11:18:17,657 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-20 11:18:17,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 109 events. 12/109 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 202 event pairs, 0 based on Foata normal form. 20/115 useless extension candidates. Maximal degree in co-relation 86. Up to 4 conditions per place. [2022-11-20 11:18:17,661 INFO L137 encePairwiseOnDemand]: 121/133 looper letters, 3 selfloop transitions, 0 changer transitions 0/109 dead transitions. [2022-11-20 11:18:17,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 109 transitions, 233 flow [2022-11-20 11:18:17,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:18:17,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 11:18:17,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 249 transitions. [2022-11-20 11:18:17,718 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9360902255639098 [2022-11-20 11:18:17,719 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 249 transitions. [2022-11-20 11:18:17,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 249 transitions. [2022-11-20 11:18:17,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:18:17,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 249 transitions. [2022-11-20 11:18:17,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 124.5) internal successors, (249), 2 states have internal predecessors, (249), 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) [2022-11-20 11:18:17,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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) [2022-11-20 11:18:17,737 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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) [2022-11-20 11:18:17,740 INFO L175 Difference]: Start difference. First operand has 104 places, 121 transitions, 251 flow. Second operand 2 states and 249 transitions. [2022-11-20 11:18:17,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 109 transitions, 233 flow [2022-11-20 11:18:17,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 109 transitions, 228 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:18:17,751 INFO L231 Difference]: Finished difference. Result has 102 places, 109 transitions, 222 flow [2022-11-20 11:18:17,773 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=222, PETRI_PLACES=102, PETRI_TRANSITIONS=109} [2022-11-20 11:18:17,786 INFO L288 CegarLoopForPetriNet]: 104 programPoint places, -2 predicate places. [2022-11-20 11:18:17,792 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 109 transitions, 222 flow [2022-11-20 11:18:17,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 118.0) internal successors, (236), 2 states have internal predecessors, (236), 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) [2022-11-20 11:18:17,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:18:17,793 INFO L209 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] [2022-11-20 11:18:17,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:18:17,795 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-20 11:18:17,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:17,796 INFO L85 PathProgramCache]: Analyzing trace with hash 659391114, now seen corresponding path program 1 times [2022-11-20 11:18:17,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:17,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332165034] [2022-11-20 11:18:17,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:17,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:17,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:18:17,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:17,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332165034] [2022-11-20 11:18:17,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332165034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:17,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:18:17,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:18:17,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568888763] [2022-11-20 11:18:17,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:17,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:18:17,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:17,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:18:17,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:18:17,964 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 133 [2022-11-20 11:18:17,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 109 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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) [2022-11-20 11:18:17,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:18:17,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 133 [2022-11-20 11:18:17,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:18:18,111 INFO L130 PetriNetUnfolder]: 31/215 cut-off events. [2022-11-20 11:18:18,112 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-20 11:18:18,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 215 events. 31/215 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 724 event pairs, 4 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 267. Up to 24 conditions per place. [2022-11-20 11:18:18,120 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 11 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2022-11-20 11:18:18,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 113 transitions, 259 flow [2022-11-20 11:18:18,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:18:18,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:18:18,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2022-11-20 11:18:18,130 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8671679197994987 [2022-11-20 11:18:18,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2022-11-20 11:18:18,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2022-11-20 11:18:18,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:18:18,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2022-11-20 11:18:18,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 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) [2022-11-20 11:18:18,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 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) [2022-11-20 11:18:18,142 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 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) [2022-11-20 11:18:18,143 INFO L175 Difference]: Start difference. First operand has 102 places, 109 transitions, 222 flow. Second operand 3 states and 346 transitions. [2022-11-20 11:18:18,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 113 transitions, 259 flow [2022-11-20 11:18:18,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 113 transitions, 259 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:18:18,149 INFO L231 Difference]: Finished difference. Result has 106 places, 110 transitions, 242 flow [2022-11-20 11:18:18,150 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=106, PETRI_TRANSITIONS=110} [2022-11-20 11:18:18,151 INFO L288 CegarLoopForPetriNet]: 104 programPoint places, 2 predicate places. [2022-11-20 11:18:18,153 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 110 transitions, 242 flow [2022-11-20 11:18:18,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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) [2022-11-20 11:18:18,154 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:18:18,155 INFO L209 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] [2022-11-20 11:18:18,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:18:18,155 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-20 11:18:18,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:18,158 INFO L85 PathProgramCache]: Analyzing trace with hash 685275118, now seen corresponding path program 1 times [2022-11-20 11:18:18,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:18,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330876802] [2022-11-20 11:18:18,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:18,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:18,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:18:18,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:18,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330876802] [2022-11-20 11:18:18,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330876802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:18,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:18:18,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:18:18,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564750969] [2022-11-20 11:18:18,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:18,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:18:18,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:18,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:18:18,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:18:18,356 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 133 [2022-11-20 11:18:18,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 110 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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) [2022-11-20 11:18:18,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:18:18,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 133 [2022-11-20 11:18:18,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:18:18,447 INFO L130 PetriNetUnfolder]: 25/196 cut-off events. [2022-11-20 11:18:18,447 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-11-20 11:18:18,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 196 events. 25/196 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 615 event pairs, 5 based on Foata normal form. 7/181 useless extension candidates. Maximal degree in co-relation 260. Up to 22 conditions per place. [2022-11-20 11:18:18,450 INFO L137 encePairwiseOnDemand]: 129/133 looper letters, 9 selfloop transitions, 2 changer transitions 1/111 dead transitions. [2022-11-20 11:18:18,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 111 transitions, 269 flow [2022-11-20 11:18:18,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:18:18,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:18:18,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2022-11-20 11:18:18,453 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8621553884711779 [2022-11-20 11:18:18,453 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2022-11-20 11:18:18,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2022-11-20 11:18:18,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:18:18,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2022-11-20 11:18:18,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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) [2022-11-20 11:18:18,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 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) [2022-11-20 11:18:18,458 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 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) [2022-11-20 11:18:18,458 INFO L175 Difference]: Start difference. First operand has 106 places, 110 transitions, 242 flow. Second operand 3 states and 344 transitions. [2022-11-20 11:18:18,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 111 transitions, 269 flow [2022-11-20 11:18:18,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 111 transitions, 263 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:18:18,463 INFO L231 Difference]: Finished difference. Result has 107 places, 110 transitions, 246 flow [2022-11-20 11:18:18,463 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=107, PETRI_TRANSITIONS=110} [2022-11-20 11:18:18,464 INFO L288 CegarLoopForPetriNet]: 104 programPoint places, 3 predicate places. [2022-11-20 11:18:18,464 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 110 transitions, 246 flow [2022-11-20 11:18:18,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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) [2022-11-20 11:18:18,465 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:18:18,466 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:18,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:18:18,466 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-20 11:18:18,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:18,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1799529779, now seen corresponding path program 1 times [2022-11-20 11:18:18,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:18,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9471683] [2022-11-20 11:18:18,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:18,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:18,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:18:18,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:18,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9471683] [2022-11-20 11:18:18,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9471683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:18,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:18:18,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:18:18,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206163294] [2022-11-20 11:18:18,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:18,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:18:18,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:18,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:18:18,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:18:18,602 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 133 [2022-11-20 11:18:18,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 110 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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) [2022-11-20 11:18:18,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:18:18,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 133 [2022-11-20 11:18:18,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:18:19,088 INFO L130 PetriNetUnfolder]: 451/1266 cut-off events. [2022-11-20 11:18:19,088 INFO L131 PetriNetUnfolder]: For 86/86 co-relation queries the response was YES. [2022-11-20 11:18:19,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2047 conditions, 1266 events. 451/1266 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 8281 event pairs, 59 based on Foata normal form. 0/1087 useless extension candidates. Maximal degree in co-relation 2041. Up to 318 conditions per place. [2022-11-20 11:18:19,100 INFO L137 encePairwiseOnDemand]: 119/133 looper letters, 47 selfloop transitions, 5 changer transitions 26/160 dead transitions. [2022-11-20 11:18:19,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 160 transitions, 505 flow [2022-11-20 11:18:19,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:18:19,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:18:19,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 546 transitions. [2022-11-20 11:18:19,104 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8210526315789474 [2022-11-20 11:18:19,105 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 546 transitions. [2022-11-20 11:18:19,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 546 transitions. [2022-11-20 11:18:19,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:18:19,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 546 transitions. [2022-11-20 11:18:19,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 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) [2022-11-20 11:18:19,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 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) [2022-11-20 11:18:19,117 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 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) [2022-11-20 11:18:19,118 INFO L175 Difference]: Start difference. First operand has 107 places, 110 transitions, 246 flow. Second operand 5 states and 546 transitions. [2022-11-20 11:18:19,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 160 transitions, 505 flow [2022-11-20 11:18:19,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 160 transitions, 503 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:18:19,131 INFO L231 Difference]: Finished difference. Result has 114 places, 115 transitions, 320 flow [2022-11-20 11:18:19,132 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=320, PETRI_PLACES=114, PETRI_TRANSITIONS=115} [2022-11-20 11:18:19,134 INFO L288 CegarLoopForPetriNet]: 104 programPoint places, 10 predicate places. [2022-11-20 11:18:19,134 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 115 transitions, 320 flow [2022-11-20 11:18:19,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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) [2022-11-20 11:18:19,135 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:18:19,136 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:19,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:18:19,137 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-20 11:18:19,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:19,140 INFO L85 PathProgramCache]: Analyzing trace with hash -226138163, now seen corresponding path program 2 times [2022-11-20 11:18:19,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:19,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222777575] [2022-11-20 11:18:19,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:19,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:19,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:18:19,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:19,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222777575] [2022-11-20 11:18:19,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222777575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:19,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:18:19,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:18:19,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079820358] [2022-11-20 11:18:19,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:19,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:18:19,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:19,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:18:19,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:18:19,265 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 133 [2022-11-20 11:18:19,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 115 transitions, 320 flow. Second operand has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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) [2022-11-20 11:18:19,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:18:19,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 133 [2022-11-20 11:18:19,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:18:19,553 INFO L130 PetriNetUnfolder]: 390/1753 cut-off events. [2022-11-20 11:18:19,553 INFO L131 PetriNetUnfolder]: For 246/251 co-relation queries the response was YES. [2022-11-20 11:18:19,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2696 conditions, 1753 events. 390/1753 cut-off events. For 246/251 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 13920 event pairs, 31 based on Foata normal form. 0/1517 useless extension candidates. Maximal degree in co-relation 2687. Up to 200 conditions per place. [2022-11-20 11:18:19,566 INFO L137 encePairwiseOnDemand]: 129/133 looper letters, 22 selfloop transitions, 6 changer transitions 1/134 dead transitions. [2022-11-20 11:18:19,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 134 transitions, 421 flow [2022-11-20 11:18:19,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:18:19,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:18:19,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 580 transitions. [2022-11-20 11:18:19,569 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8721804511278195 [2022-11-20 11:18:19,569 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 580 transitions. [2022-11-20 11:18:19,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 580 transitions. [2022-11-20 11:18:19,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:18:19,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 580 transitions. [2022-11-20 11:18:19,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 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) [2022-11-20 11:18:19,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 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) [2022-11-20 11:18:19,574 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 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) [2022-11-20 11:18:19,575 INFO L175 Difference]: Start difference. First operand has 114 places, 115 transitions, 320 flow. Second operand 5 states and 580 transitions. [2022-11-20 11:18:19,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 134 transitions, 421 flow [2022-11-20 11:18:19,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 134 transitions, 405 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-11-20 11:18:19,581 INFO L231 Difference]: Finished difference. Result has 120 places, 121 transitions, 354 flow [2022-11-20 11:18:19,581 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=354, PETRI_PLACES=120, PETRI_TRANSITIONS=121} [2022-11-20 11:18:19,582 INFO L288 CegarLoopForPetriNet]: 104 programPoint places, 16 predicate places. [2022-11-20 11:18:19,582 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 121 transitions, 354 flow [2022-11-20 11:18:19,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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) [2022-11-20 11:18:19,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:18:19,583 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:19,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:18:19,584 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-20 11:18:19,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:19,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1639744269, now seen corresponding path program 3 times [2022-11-20 11:18:19,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:19,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844865761] [2022-11-20 11:18:19,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:19,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:19,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:18:19,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:19,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844865761] [2022-11-20 11:18:19,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844865761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:19,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:18:19,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:18:19,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592117053] [2022-11-20 11:18:19,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:19,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:18:19,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:19,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:18:19,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:18:19,670 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 133 [2022-11-20 11:18:19,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 121 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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) [2022-11-20 11:18:19,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:18:19,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 133 [2022-11-20 11:18:19,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:18:20,321 INFO L130 PetriNetUnfolder]: 1088/3500 cut-off events. [2022-11-20 11:18:20,322 INFO L131 PetriNetUnfolder]: For 1403/1449 co-relation queries the response was YES. [2022-11-20 11:18:20,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7120 conditions, 3500 events. 1088/3500 cut-off events. For 1403/1449 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 29866 event pairs, 159 based on Foata normal form. 19/3184 useless extension candidates. Maximal degree in co-relation 7108. Up to 932 conditions per place. [2022-11-20 11:18:20,355 INFO L137 encePairwiseOnDemand]: 119/133 looper letters, 63 selfloop transitions, 16 changer transitions 3/170 dead transitions. [2022-11-20 11:18:20,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 170 transitions, 657 flow [2022-11-20 11:18:20,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:18:20,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:18:20,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 545 transitions. [2022-11-20 11:18:20,358 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8195488721804511 [2022-11-20 11:18:20,358 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 545 transitions. [2022-11-20 11:18:20,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 545 transitions. [2022-11-20 11:18:20,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:18:20,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 545 transitions. [2022-11-20 11:18:20,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 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) [2022-11-20 11:18:20,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 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) [2022-11-20 11:18:20,364 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 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) [2022-11-20 11:18:20,364 INFO L175 Difference]: Start difference. First operand has 120 places, 121 transitions, 354 flow. Second operand 5 states and 545 transitions. [2022-11-20 11:18:20,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 170 transitions, 657 flow [2022-11-20 11:18:20,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 170 transitions, 657 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:18:20,375 INFO L231 Difference]: Finished difference. Result has 128 places, 134 transitions, 492 flow [2022-11-20 11:18:20,376 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=492, PETRI_PLACES=128, PETRI_TRANSITIONS=134} [2022-11-20 11:18:20,378 INFO L288 CegarLoopForPetriNet]: 104 programPoint places, 24 predicate places. [2022-11-20 11:18:20,379 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 134 transitions, 492 flow [2022-11-20 11:18:20,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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) [2022-11-20 11:18:20,379 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:18:20,379 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:20,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:18:20,381 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-20 11:18:20,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:20,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1874927951, now seen corresponding path program 4 times [2022-11-20 11:18:20,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:20,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346938926] [2022-11-20 11:18:20,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:20,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:20,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:18:20,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:20,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346938926] [2022-11-20 11:18:20,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346938926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:20,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:18:20,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:18:20,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413158857] [2022-11-20 11:18:20,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:20,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:18:20,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:20,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:18:20,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:18:20,511 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 133 [2022-11-20 11:18:20,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 134 transitions, 492 flow. Second operand has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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) [2022-11-20 11:18:20,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:18:20,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 133 [2022-11-20 11:18:20,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:18:21,128 INFO L130 PetriNetUnfolder]: 692/3268 cut-off events. [2022-11-20 11:18:21,129 INFO L131 PetriNetUnfolder]: For 1989/2082 co-relation queries the response was YES. [2022-11-20 11:18:21,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6609 conditions, 3268 events. 692/3268 cut-off events. For 1989/2082 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 29441 event pairs, 70 based on Foata normal form. 39/3168 useless extension candidates. Maximal degree in co-relation 6593. Up to 470 conditions per place. [2022-11-20 11:18:21,158 INFO L137 encePairwiseOnDemand]: 129/133 looper letters, 26 selfloop transitions, 11 changer transitions 0/155 dead transitions. [2022-11-20 11:18:21,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 155 transitions, 662 flow [2022-11-20 11:18:21,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:18:21,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:18:21,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 578 transitions. [2022-11-20 11:18:21,161 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.869172932330827 [2022-11-20 11:18:21,161 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 578 transitions. [2022-11-20 11:18:21,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 578 transitions. [2022-11-20 11:18:21,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:18:21,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 578 transitions. [2022-11-20 11:18:21,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 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) [2022-11-20 11:18:21,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 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) [2022-11-20 11:18:21,167 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 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) [2022-11-20 11:18:21,168 INFO L175 Difference]: Start difference. First operand has 128 places, 134 transitions, 492 flow. Second operand 5 states and 578 transitions. [2022-11-20 11:18:21,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 155 transitions, 662 flow [2022-11-20 11:18:21,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 155 transitions, 662 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:18:21,179 INFO L231 Difference]: Finished difference. Result has 136 places, 142 transitions, 586 flow [2022-11-20 11:18:21,179 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=586, PETRI_PLACES=136, PETRI_TRANSITIONS=142} [2022-11-20 11:18:21,180 INFO L288 CegarLoopForPetriNet]: 104 programPoint places, 32 predicate places. [2022-11-20 11:18:21,180 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 142 transitions, 586 flow [2022-11-20 11:18:21,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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) [2022-11-20 11:18:21,180 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:18:21,181 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:21,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:18:21,181 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-20 11:18:21,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:21,182 INFO L85 PathProgramCache]: Analyzing trace with hash 953619915, now seen corresponding path program 1 times [2022-11-20 11:18:21,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:21,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665866283] [2022-11-20 11:18:21,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:21,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:21,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:18:21,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:21,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665866283] [2022-11-20 11:18:21,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665866283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:21,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:18:21,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:18:21,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795261025] [2022-11-20 11:18:21,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:21,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:18:21,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:21,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:18:21,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:18:21,302 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 133 [2022-11-20 11:18:21,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 142 transitions, 586 flow. Second operand has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 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) [2022-11-20 11:18:21,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:18:21,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 133 [2022-11-20 11:18:21,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:18:21,945 INFO L130 PetriNetUnfolder]: 672/3164 cut-off events. [2022-11-20 11:18:21,945 INFO L131 PetriNetUnfolder]: For 1591/1644 co-relation queries the response was YES. [2022-11-20 11:18:21,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6493 conditions, 3164 events. 672/3164 cut-off events. For 1591/1644 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 29268 event pairs, 75 based on Foata normal form. 13/3055 useless extension candidates. Maximal degree in co-relation 6473. Up to 385 conditions per place. [2022-11-20 11:18:21,978 INFO L137 encePairwiseOnDemand]: 126/133 looper letters, 15 selfloop transitions, 10 changer transitions 5/155 dead transitions. [2022-11-20 11:18:21,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 155 transitions, 659 flow [2022-11-20 11:18:21,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:18:21,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:18:21,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 569 transitions. [2022-11-20 11:18:21,984 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8556390977443609 [2022-11-20 11:18:21,984 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 569 transitions. [2022-11-20 11:18:21,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 569 transitions. [2022-11-20 11:18:21,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:18:21,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 569 transitions. [2022-11-20 11:18:21,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 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) [2022-11-20 11:18:21,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 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) [2022-11-20 11:18:21,990 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 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) [2022-11-20 11:18:21,990 INFO L175 Difference]: Start difference. First operand has 136 places, 142 transitions, 586 flow. Second operand 5 states and 569 transitions. [2022-11-20 11:18:21,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 155 transitions, 659 flow [2022-11-20 11:18:22,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 155 transitions, 655 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-11-20 11:18:22,003 INFO L231 Difference]: Finished difference. Result has 143 places, 144 transitions, 615 flow [2022-11-20 11:18:22,004 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=615, PETRI_PLACES=143, PETRI_TRANSITIONS=144} [2022-11-20 11:18:22,004 INFO L288 CegarLoopForPetriNet]: 104 programPoint places, 39 predicate places. [2022-11-20 11:18:22,005 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 144 transitions, 615 flow [2022-11-20 11:18:22,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 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) [2022-11-20 11:18:22,005 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:18:22,006 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:22,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:18:22,006 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-20 11:18:22,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:22,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1878550952, now seen corresponding path program 1 times [2022-11-20 11:18:22,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:22,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399646896] [2022-11-20 11:18:22,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:22,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:22,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:18:22,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:22,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399646896] [2022-11-20 11:18:22,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399646896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:22,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:18:22,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:18:22,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118598600] [2022-11-20 11:18:22,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:22,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:18:22,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:22,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:18:22,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:18:22,153 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 133 [2022-11-20 11:18:22,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 144 transitions, 615 flow. Second operand has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 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) [2022-11-20 11:18:22,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:18:22,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 133 [2022-11-20 11:18:22,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:18:22,634 INFO L130 PetriNetUnfolder]: 623/2915 cut-off events. [2022-11-20 11:18:22,634 INFO L131 PetriNetUnfolder]: For 1357/1393 co-relation queries the response was YES. [2022-11-20 11:18:22,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6295 conditions, 2915 events. 623/2915 cut-off events. For 1357/1393 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 25986 event pairs, 63 based on Foata normal form. 8/2824 useless extension candidates. Maximal degree in co-relation 6271. Up to 348 conditions per place. [2022-11-20 11:18:22,665 INFO L137 encePairwiseOnDemand]: 126/133 looper letters, 0 selfloop transitions, 0 changer transitions 154/154 dead transitions. [2022-11-20 11:18:22,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 154 transitions, 674 flow [2022-11-20 11:18:22,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:18:22,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:18:22,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 570 transitions. [2022-11-20 11:18:22,668 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2022-11-20 11:18:22,669 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 570 transitions. [2022-11-20 11:18:22,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 570 transitions. [2022-11-20 11:18:22,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:18:22,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 570 transitions. [2022-11-20 11:18:22,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 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) [2022-11-20 11:18:22,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 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) [2022-11-20 11:18:22,674 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 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) [2022-11-20 11:18:22,674 INFO L175 Difference]: Start difference. First operand has 143 places, 144 transitions, 615 flow. Second operand 5 states and 570 transitions. [2022-11-20 11:18:22,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 154 transitions, 674 flow [2022-11-20 11:18:22,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 154 transitions, 660 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-20 11:18:22,692 INFO L231 Difference]: Finished difference. Result has 142 places, 0 transitions, 0 flow [2022-11-20 11:18:22,692 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=142, PETRI_TRANSITIONS=0} [2022-11-20 11:18:22,693 INFO L288 CegarLoopForPetriNet]: 104 programPoint places, 38 predicate places. [2022-11-20 11:18:22,693 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 0 transitions, 0 flow [2022-11-20 11:18:22,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 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) [2022-11-20 11:18:22,697 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-11-20 11:18:22,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-11-20 11:18:22,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-11-20 11:18:22,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-11-20 11:18:22,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-11-20 11:18:22,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-11-20 11:18:22,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:18:22,700 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1] [2022-11-20 11:18:22,706 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 11:18:22,707 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:18:22,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:18:22 BasicIcfg [2022-11-20 11:18:22,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:18:22,714 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:18:22,714 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:18:22,714 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:18:22,715 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:18:16" (3/4) ... [2022-11-20 11:18:22,718 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:18:22,725 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2022-11-20 11:18:22,725 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2022-11-20 11:18:22,729 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-20 11:18:22,729 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 11:18:22,729 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 11:18:22,730 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:18:22,768 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ca4222a-0c6c-4557-bb67-2ea8a5dbaf4d/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:18:22,768 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:18:22,769 INFO L158 Benchmark]: Toolchain (without parser) took 7258.85ms. Allocated memory was 157.3MB in the beginning and 251.7MB in the end (delta: 94.4MB). Free memory was 119.6MB in the beginning and 196.9MB in the end (delta: -77.3MB). Peak memory consumption was 133.5MB. Max. memory is 16.1GB. [2022-11-20 11:18:22,769 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 121.6MB. Free memory was 89.4MB in the beginning and 89.3MB in the end (delta: 70.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:18:22,770 INFO L158 Benchmark]: CACSL2BoogieTranslator took 716.83ms. Allocated memory is still 157.3MB. Free memory was 119.3MB in the beginning and 113.5MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 11:18:22,770 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.50ms. Allocated memory is still 157.3MB. Free memory was 113.5MB in the beginning and 111.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:18:22,771 INFO L158 Benchmark]: Boogie Preprocessor took 71.05ms. Allocated memory is still 157.3MB. Free memory was 111.5MB in the beginning and 109.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:18:22,771 INFO L158 Benchmark]: RCFGBuilder took 549.01ms. Allocated memory is still 157.3MB. Free memory was 109.4MB in the beginning and 94.4MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 11:18:22,772 INFO L158 Benchmark]: TraceAbstraction took 5796.07ms. Allocated memory was 157.3MB in the beginning and 251.7MB in the end (delta: 94.4MB). Free memory was 93.7MB in the beginning and 83.2MB in the end (delta: 10.5MB). Peak memory consumption was 115.8MB. Max. memory is 16.1GB. [2022-11-20 11:18:22,772 INFO L158 Benchmark]: Witness Printer took 54.71ms. Allocated memory is still 251.7MB. Free memory was 83.2MB in the beginning and 196.9MB in the end (delta: -113.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:18:22,774 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 121.6MB. Free memory was 89.4MB in the beginning and 89.3MB in the end (delta: 70.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 716.83ms. Allocated memory is still 157.3MB. Free memory was 119.3MB in the beginning and 113.5MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.50ms. Allocated memory is still 157.3MB. Free memory was 113.5MB in the beginning and 111.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.05ms. Allocated memory is still 157.3MB. Free memory was 111.5MB in the beginning and 109.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 549.01ms. Allocated memory is still 157.3MB. Free memory was 109.4MB in the beginning and 94.4MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5796.07ms. Allocated memory was 157.3MB in the beginning and 251.7MB in the end (delta: 94.4MB). Free memory was 93.7MB in the beginning and 83.2MB in the end (delta: 10.5MB). Peak memory consumption was 115.8MB. Max. memory is 16.1GB. * Witness Printer took 54.71ms. Allocated memory is still 251.7MB. Free memory was 83.2MB in the beginning and 196.9MB in the end (delta: -113.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 834]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 764]: 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, 176 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.6s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 134 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 134 mSDsluCounter, 204 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 66 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 353 IncrementalHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 138 mSDtfsCounter, 353 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=615occurred in iteration=8, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 434 NumberOfCodeBlocks, 434 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 425 ConstructedInterpolants, 0 QuantifiedInterpolants, 573 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 11:18:22,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ca4222a-0c6c-4557-bb67-2ea8a5dbaf4d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE