./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_642e09e4-2250-42e0-9bd5-a9b202a5aa44/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642e09e4-2250-42e0-9bd5-a9b202a5aa44/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642e09e4-2250-42e0-9bd5-a9b202a5aa44/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642e09e4-2250-42e0-9bd5-a9b202a5aa44/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642e09e4-2250-42e0-9bd5-a9b202a5aa44/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642e09e4-2250-42e0-9bd5-a9b202a5aa44/bin/uautomizer-ZsLfNo2U6R --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 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 --- 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-38b53e6 [2022-11-25 17:36:57,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:36:57,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:36:57,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:36:57,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:36:57,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:36:57,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:36:57,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:36:57,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:36:57,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:36:57,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:36:57,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:36:57,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:36:57,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:36:57,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:36:57,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:36:57,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:36:57,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:36:57,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:36:57,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:36:57,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:36:57,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:36:57,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:36:57,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:36:57,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:36:57,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:36:57,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:36:57,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:36:57,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:36:57,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:36:57,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:36:57,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:36:57,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:36:57,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:36:57,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:36:57,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:36:57,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:36:57,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:36:57,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:36:57,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:36:57,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:36:57,358 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642e09e4-2250-42e0-9bd5-a9b202a5aa44/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:36:57,381 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:36:57,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:36:57,382 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:36:57,382 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:36:57,383 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:36:57,383 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:36:57,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:36:57,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:36:57,385 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:36:57,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:36:57,386 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:36:57,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:36:57,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:36:57,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:36:57,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:36:57,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:36:57,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:36:57,388 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:36:57,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:36:57,389 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:36:57,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:36:57,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:36:57,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:36:57,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:36:57,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:36:57,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:36:57,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:36:57,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:36:57,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:36:57,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:36:57,392 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:36:57,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:36:57,392 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:36:57,393 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:36:57,393 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_642e09e4-2250-42e0-9bd5-a9b202a5aa44/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642e09e4-2250-42e0-9bd5-a9b202a5aa44/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 [2022-11-25 17:36:57,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:36:57,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:36:57,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:36:57,868 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:36:57,868 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:36:57,870 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642e09e4-2250-42e0-9bd5-a9b202a5aa44/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-25 17:37:01,305 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:37:01,717 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:37:01,718 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642e09e4-2250-42e0-9bd5-a9b202a5aa44/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-25 17:37:01,734 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642e09e4-2250-42e0-9bd5-a9b202a5aa44/bin/uautomizer-ZsLfNo2U6R/data/2cce2a851/99dbcd072334488790034a4c087754ef/FLAGf09bf0950 [2022-11-25 17:37:01,751 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642e09e4-2250-42e0-9bd5-a9b202a5aa44/bin/uautomizer-ZsLfNo2U6R/data/2cce2a851/99dbcd072334488790034a4c087754ef [2022-11-25 17:37:01,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:37:01,756 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:37:01,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:37:01,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:37:01,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:37:01,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:37:01" (1/1) ... [2022-11-25 17:37:01,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a50ce97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:37:01, skipping insertion in model container [2022-11-25 17:37:01,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:37:01" (1/1) ... [2022-11-25 17:37:01,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:37:01,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:37:02,066 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_642e09e4-2250-42e0-9bd5-a9b202a5aa44/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-11-25 17:37:02,317 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,318 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,319 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,321 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,321 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,321 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,322 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,323 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,324 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,325 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,325 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,326 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,326 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,327 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,329 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,329 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,330 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,331 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,331 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,332 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,333 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,334 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,336 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,338 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,340 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,342 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,355 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,356 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,357 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,357 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,357 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,359 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:37:02,373 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:37:02,387 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_642e09e4-2250-42e0-9bd5-a9b202a5aa44/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-11-25 17:37:02,413 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,414 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,414 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,415 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,415 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,416 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,416 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,417 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,418 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,418 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,418 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,419 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,419 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,420 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,421 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,421 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,422 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,422 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,423 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,423 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,424 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,424 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,425 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,426 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,426 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,426 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,427 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,428 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,433 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,434 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,434 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,435 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,435 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:02,436 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:02,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:37:02,479 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:37:02,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:37:02 WrapperNode [2022-11-25 17:37:02,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:37:02,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:37:02,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:37:02,482 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:37:02,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:37:02" (1/1) ... [2022-11-25 17:37:02,509 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:37:02" (1/1) ... [2022-11-25 17:37:02,536 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2022-11-25 17:37:02,536 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:37:02,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:37:02,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:37:02,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:37:02,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:37:02" (1/1) ... [2022-11-25 17:37:02,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:37:02" (1/1) ... [2022-11-25 17:37:02,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:37:02" (1/1) ... [2022-11-25 17:37:02,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:37:02" (1/1) ... [2022-11-25 17:37:02,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:37:02" (1/1) ... [2022-11-25 17:37:02,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:37:02" (1/1) ... [2022-11-25 17:37:02,565 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:37:02" (1/1) ... [2022-11-25 17:37:02,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:37:02" (1/1) ... [2022-11-25 17:37:02,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:37:02,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:37:02,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:37:02,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:37:02,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:37:02" (1/1) ... [2022-11-25 17:37:02,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:37:02,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642e09e4-2250-42e0-9bd5-a9b202a5aa44/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:37:02,636 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642e09e4-2250-42e0-9bd5-a9b202a5aa44/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:37:02,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642e09e4-2250-42e0-9bd5-a9b202a5aa44/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:37:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:37:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:37:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:37:02,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:37:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:37:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-25 17:37:02,710 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-25 17:37:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-25 17:37:02,710 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-25 17:37:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-25 17:37:02,711 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-25 17:37:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-25 17:37:02,711 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-25 17:37:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:37:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:37:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:37:02,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:37:02,714 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:37:02,983 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:37:02,986 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:37:03,288 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:37:03,298 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:37:03,298 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:37:03,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:37:03 BoogieIcfgContainer [2022-11-25 17:37:03,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:37:03,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:37:03,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:37:03,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:37:03,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:37:01" (1/3) ... [2022-11-25 17:37:03,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d13adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:37:03, skipping insertion in model container [2022-11-25 17:37:03,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:37:02" (2/3) ... [2022-11-25 17:37:03,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d13adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:37:03, skipping insertion in model container [2022-11-25 17:37:03,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:37:03" (3/3) ... [2022-11-25 17:37:03,319 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-25 17:37:03,337 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:37:03,350 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:37:03,351 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:37:03,351 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:37:03,452 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:37:03,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 105 transitions, 230 flow [2022-11-25 17:37:03,573 INFO L130 PetriNetUnfolder]: 2/101 cut-off events. [2022-11-25 17:37:03,574 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:37:03,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 101 events. 2/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2022-11-25 17:37:03,581 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 105 transitions, 230 flow [2022-11-25 17:37:03,587 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 85 transitions, 182 flow [2022-11-25 17:37:03,592 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:37:03,612 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 85 transitions, 182 flow [2022-11-25 17:37:03,616 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 85 transitions, 182 flow [2022-11-25 17:37:03,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 85 transitions, 182 flow [2022-11-25 17:37:03,651 INFO L130 PetriNetUnfolder]: 1/85 cut-off events. [2022-11-25 17:37:03,652 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:37:03,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 85 events. 1/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 44 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2022-11-25 17:37:03,655 INFO L119 LiptonReduction]: Number of co-enabled transitions 1630 [2022-11-25 17:37:07,246 INFO L134 LiptonReduction]: Checked pairs total: 2582 [2022-11-25 17:37:07,246 INFO L136 LiptonReduction]: Total number of compositions: 67 [2022-11-25 17:37:07,281 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:37:07,293 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;@6a57a4d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:37:07,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-25 17:37:07,309 INFO L130 PetriNetUnfolder]: 0/19 cut-off events. [2022-11-25 17:37:07,309 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:37:07,309 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:37:07,311 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:37:07,312 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:37:07,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:37:07,319 INFO L85 PathProgramCache]: Analyzing trace with hash -287316291, now seen corresponding path program 1 times [2022-11-25 17:37:07,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:37:07,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455186674] [2022-11-25 17:37:07,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:37:07,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:37:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:08,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:37:08,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:37:08,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455186674] [2022-11-25 17:37:08,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455186674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:37:08,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:37:08,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:37:08,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833605448] [2022-11-25 17:37:08,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:37:08,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:37:08,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:37:08,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:37:08,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:37:08,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 172 [2022-11-25 17:37:08,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 20 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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) [2022-11-25 17:37:08,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:37:08,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 172 [2022-11-25 17:37:08,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:37:08,846 INFO L130 PetriNetUnfolder]: 2019/2943 cut-off events. [2022-11-25 17:37:08,846 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2022-11-25 17:37:08,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6086 conditions, 2943 events. 2019/2943 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 13608 event pairs, 796 based on Foata normal form. 109/3052 useless extension candidates. Maximal degree in co-relation 6074. Up to 1819 conditions per place. [2022-11-25 17:37:08,874 INFO L137 encePairwiseOnDemand]: 164/172 looper letters, 30 selfloop transitions, 7 changer transitions 0/37 dead transitions. [2022-11-25 17:37:08,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 169 flow [2022-11-25 17:37:08,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:37:08,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:37:08,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2022-11-25 17:37:08,892 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5852713178294574 [2022-11-25 17:37:08,894 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2022-11-25 17:37:08,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2022-11-25 17:37:08,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:37:08,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2022-11-25 17:37:08,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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) [2022-11-25 17:37:08,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 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) [2022-11-25 17:37:08,920 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 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) [2022-11-25 17:37:08,923 INFO L175 Difference]: Start difference. First operand has 33 places, 20 transitions, 52 flow. Second operand 3 states and 302 transitions. [2022-11-25 17:37:08,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 169 flow [2022-11-25 17:37:08,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 162 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 17:37:08,933 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 102 flow [2022-11-25 17:37:08,935 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2022-11-25 17:37:08,940 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2022-11-25 17:37:08,940 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 102 flow [2022-11-25 17:37:08,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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) [2022-11-25 17:37:08,941 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:37:08,941 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:37:08,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:37:08,942 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:37:08,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:37:08,943 INFO L85 PathProgramCache]: Analyzing trace with hash -316871208, now seen corresponding path program 1 times [2022-11-25 17:37:08,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:37:08,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621353606] [2022-11-25 17:37:08,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:37:08,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:37:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:09,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:37:09,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:37:09,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621353606] [2022-11-25 17:37:09,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621353606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:37:09,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:37:09,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:37:09,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361661649] [2022-11-25 17:37:09,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:37:09,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:37:09,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:37:09,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:37:09,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:37:09,198 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 172 [2022-11-25 17:37:09,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 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) [2022-11-25 17:37:09,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:37:09,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 172 [2022-11-25 17:37:09,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:37:09,646 INFO L130 PetriNetUnfolder]: 1886/2759 cut-off events. [2022-11-25 17:37:09,647 INFO L131 PetriNetUnfolder]: For 1167/1167 co-relation queries the response was YES. [2022-11-25 17:37:09,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7639 conditions, 2759 events. 1886/2759 cut-off events. For 1167/1167 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12624 event pairs, 269 based on Foata normal form. 33/2792 useless extension candidates. Maximal degree in co-relation 7627. Up to 1394 conditions per place. [2022-11-25 17:37:09,726 INFO L137 encePairwiseOnDemand]: 164/172 looper letters, 38 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2022-11-25 17:37:09,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 46 transitions, 260 flow [2022-11-25 17:37:09,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:37:09,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:37:09,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 395 transitions. [2022-11-25 17:37:09,735 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5741279069767442 [2022-11-25 17:37:09,735 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 395 transitions. [2022-11-25 17:37:09,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 395 transitions. [2022-11-25 17:37:09,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:37:09,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 395 transitions. [2022-11-25 17:37:09,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 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) [2022-11-25 17:37:09,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 172.0) internal successors, (860), 5 states have internal predecessors, (860), 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) [2022-11-25 17:37:09,744 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 172.0) internal successors, (860), 5 states have internal predecessors, (860), 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) [2022-11-25 17:37:09,744 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 102 flow. Second operand 4 states and 395 transitions. [2022-11-25 17:37:09,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 46 transitions, 260 flow [2022-11-25 17:37:09,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 46 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:37:09,759 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 146 flow [2022-11-25 17:37:09,760 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2022-11-25 17:37:09,761 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2022-11-25 17:37:09,761 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 146 flow [2022-11-25 17:37:09,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 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) [2022-11-25 17:37:09,762 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:37:09,762 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:37:09,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:37:09,763 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:37:09,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:37:09,767 INFO L85 PathProgramCache]: Analyzing trace with hash -316871177, now seen corresponding path program 1 times [2022-11-25 17:37:09,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:37:09,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346801741] [2022-11-25 17:37:09,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:37:09,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:37:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:09,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:37:09,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:37:09,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346801741] [2022-11-25 17:37:09,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346801741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:37:09,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:37:09,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:37:09,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077403245] [2022-11-25 17:37:09,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:37:09,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:37:09,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:37:09,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:37:09,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:37:10,018 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 172 [2022-11-25 17:37:10,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 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) [2022-11-25 17:37:10,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:37:10,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 172 [2022-11-25 17:37:10,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:37:10,498 INFO L130 PetriNetUnfolder]: 1794/2633 cut-off events. [2022-11-25 17:37:10,498 INFO L131 PetriNetUnfolder]: For 2471/2471 co-relation queries the response was YES. [2022-11-25 17:37:10,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8003 conditions, 2633 events. 1794/2633 cut-off events. For 2471/2471 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 12135 event pairs, 287 based on Foata normal form. 16/2649 useless extension candidates. Maximal degree in co-relation 7988. Up to 1438 conditions per place. [2022-11-25 17:37:10,526 INFO L137 encePairwiseOnDemand]: 164/172 looper letters, 46 selfloop transitions, 16 changer transitions 0/62 dead transitions. [2022-11-25 17:37:10,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 62 transitions, 406 flow [2022-11-25 17:37:10,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:37:10,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:37:10,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2022-11-25 17:37:10,546 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5857558139534884 [2022-11-25 17:37:10,546 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2022-11-25 17:37:10,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2022-11-25 17:37:10,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:37:10,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2022-11-25 17:37:10,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 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) [2022-11-25 17:37:10,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 172.0) internal successors, (860), 5 states have internal predecessors, (860), 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) [2022-11-25 17:37:10,551 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 172.0) internal successors, (860), 5 states have internal predecessors, (860), 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) [2022-11-25 17:37:10,552 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 146 flow. Second operand 4 states and 403 transitions. [2022-11-25 17:37:10,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 62 transitions, 406 flow [2022-11-25 17:37:10,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 62 transitions, 401 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:37:10,563 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 296 flow [2022-11-25 17:37:10,563 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=296, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2022-11-25 17:37:10,564 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2022-11-25 17:37:10,565 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 296 flow [2022-11-25 17:37:10,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 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) [2022-11-25 17:37:10,565 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:37:10,566 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:37:10,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:37:10,566 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:37:10,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:37:10,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1233070721, now seen corresponding path program 1 times [2022-11-25 17:37:10,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:37:10,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503431793] [2022-11-25 17:37:10,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:37:10,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:37:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:10,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:37:10,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:37:10,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503431793] [2022-11-25 17:37:10,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503431793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:37:10,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:37:10,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:37:10,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870717121] [2022-11-25 17:37:10,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:37:10,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:37:10,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:37:10,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:37:10,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:37:10,727 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 172 [2022-11-25 17:37:10,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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) [2022-11-25 17:37:10,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:37:10,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 172 [2022-11-25 17:37:10,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:37:11,119 INFO L130 PetriNetUnfolder]: 1384/2144 cut-off events. [2022-11-25 17:37:11,120 INFO L131 PetriNetUnfolder]: For 4928/5057 co-relation queries the response was YES. [2022-11-25 17:37:11,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7530 conditions, 2144 events. 1384/2144 cut-off events. For 4928/5057 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 10511 event pairs, 641 based on Foata normal form. 73/2210 useless extension candidates. Maximal degree in co-relation 7511. Up to 1639 conditions per place. [2022-11-25 17:37:11,144 INFO L137 encePairwiseOnDemand]: 169/172 looper letters, 43 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2022-11-25 17:37:11,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 471 flow [2022-11-25 17:37:11,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:37:11,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:37:11,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 320 transitions. [2022-11-25 17:37:11,147 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6201550387596899 [2022-11-25 17:37:11,147 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 320 transitions. [2022-11-25 17:37:11,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 320 transitions. [2022-11-25 17:37:11,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:37:11,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 320 transitions. [2022-11-25 17:37:11,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) [2022-11-25 17:37:11,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 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) [2022-11-25 17:37:11,152 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 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) [2022-11-25 17:37:11,153 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 296 flow. Second operand 3 states and 320 transitions. [2022-11-25 17:37:11,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 471 flow [2022-11-25 17:37:11,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 57 transitions, 471 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:37:11,170 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 313 flow [2022-11-25 17:37:11,170 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2022-11-25 17:37:11,171 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2022-11-25 17:37:11,172 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 313 flow [2022-11-25 17:37:11,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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) [2022-11-25 17:37:11,172 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:37:11,172 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:37:11,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:37:11,173 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:37:11,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:37:11,174 INFO L85 PathProgramCache]: Analyzing trace with hash 429369376, now seen corresponding path program 1 times [2022-11-25 17:37:11,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:37:11,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563103715] [2022-11-25 17:37:11,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:37:11,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:37:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:11,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:37:11,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:37:11,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563103715] [2022-11-25 17:37:11,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563103715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:37:11,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:37:11,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:37:11,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332796304] [2022-11-25 17:37:11,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:37:11,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:37:11,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:37:11,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:37:11,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:37:11,378 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 172 [2022-11-25 17:37:11,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 313 flow. Second operand has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 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) [2022-11-25 17:37:11,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:37:11,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 172 [2022-11-25 17:37:11,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:37:11,897 INFO L130 PetriNetUnfolder]: 1972/2947 cut-off events. [2022-11-25 17:37:11,897 INFO L131 PetriNetUnfolder]: For 6446/6446 co-relation queries the response was YES. [2022-11-25 17:37:11,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10440 conditions, 2947 events. 1972/2947 cut-off events. For 6446/6446 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 14190 event pairs, 451 based on Foata normal form. 42/2989 useless extension candidates. Maximal degree in co-relation 10418. Up to 1277 conditions per place. [2022-11-25 17:37:11,925 INFO L137 encePairwiseOnDemand]: 164/172 looper letters, 46 selfloop transitions, 20 changer transitions 1/67 dead transitions. [2022-11-25 17:37:11,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 67 transitions, 538 flow [2022-11-25 17:37:11,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:37:11,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:37:11,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 404 transitions. [2022-11-25 17:37:11,928 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5872093023255814 [2022-11-25 17:37:11,928 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 404 transitions. [2022-11-25 17:37:11,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 404 transitions. [2022-11-25 17:37:11,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:37:11,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 404 transitions. [2022-11-25 17:37:11,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 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) [2022-11-25 17:37:11,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 172.0) internal successors, (860), 5 states have internal predecessors, (860), 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) [2022-11-25 17:37:11,933 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 172.0) internal successors, (860), 5 states have internal predecessors, (860), 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) [2022-11-25 17:37:11,933 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 313 flow. Second operand 4 states and 404 transitions. [2022-11-25 17:37:11,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 67 transitions, 538 flow [2022-11-25 17:37:11,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 67 transitions, 528 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:37:11,960 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 403 flow [2022-11-25 17:37:11,960 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=403, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2022-11-25 17:37:11,961 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2022-11-25 17:37:11,961 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 403 flow [2022-11-25 17:37:11,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 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) [2022-11-25 17:37:11,962 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:37:11,962 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:37:11,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:37:11,962 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:37:11,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:37:11,963 INFO L85 PathProgramCache]: Analyzing trace with hash 429425114, now seen corresponding path program 1 times [2022-11-25 17:37:11,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:37:11,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838122269] [2022-11-25 17:37:11,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:37:11,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:37:11,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:12,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:37:12,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:37:12,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838122269] [2022-11-25 17:37:12,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838122269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:37:12,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:37:12,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:37:12,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945808540] [2022-11-25 17:37:12,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:37:12,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:37:12,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:37:12,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:37:12,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:37:12,163 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 172 [2022-11-25 17:37:12,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 403 flow. Second operand has 5 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 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) [2022-11-25 17:37:12,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:37:12,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 172 [2022-11-25 17:37:12,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:37:12,798 INFO L130 PetriNetUnfolder]: 2505/3778 cut-off events. [2022-11-25 17:37:12,798 INFO L131 PetriNetUnfolder]: For 12853/12853 co-relation queries the response was YES. [2022-11-25 17:37:12,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14067 conditions, 3778 events. 2505/3778 cut-off events. For 12853/12853 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 19045 event pairs, 455 based on Foata normal form. 54/3832 useless extension candidates. Maximal degree in co-relation 14042. Up to 1796 conditions per place. [2022-11-25 17:37:12,841 INFO L137 encePairwiseOnDemand]: 164/172 looper letters, 49 selfloop transitions, 19 changer transitions 27/95 dead transitions. [2022-11-25 17:37:12,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 95 transitions, 1036 flow [2022-11-25 17:37:12,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:37:12,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:37:12,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 497 transitions. [2022-11-25 17:37:12,844 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.577906976744186 [2022-11-25 17:37:12,844 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 497 transitions. [2022-11-25 17:37:12,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 497 transitions. [2022-11-25 17:37:12,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:37:12,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 497 transitions. [2022-11-25 17:37:12,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.4) internal successors, (497), 5 states have internal predecessors, (497), 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) [2022-11-25 17:37:12,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 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) [2022-11-25 17:37:12,849 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 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) [2022-11-25 17:37:12,849 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 403 flow. Second operand 5 states and 497 transitions. [2022-11-25 17:37:12,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 95 transitions, 1036 flow [2022-11-25 17:37:12,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 95 transitions, 1022 flow, removed 7 selfloop flow, removed 0 redundant places. [2022-11-25 17:37:12,900 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 531 flow [2022-11-25 17:37:12,900 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=531, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2022-11-25 17:37:12,901 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 23 predicate places. [2022-11-25 17:37:12,901 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 531 flow [2022-11-25 17:37:12,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 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) [2022-11-25 17:37:12,902 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:37:12,902 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:37:12,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:37:12,903 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:37:12,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:37:12,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1293545063, now seen corresponding path program 1 times [2022-11-25 17:37:12,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:37:12,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082168756] [2022-11-25 17:37:12,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:37:12,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:37:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:13,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:37:13,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:37:13,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082168756] [2022-11-25 17:37:13,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082168756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:37:13,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:37:13,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:37:13,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765010694] [2022-11-25 17:37:13,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:37:13,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:37:13,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:37:13,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:37:13,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:37:13,092 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 172 [2022-11-25 17:37:13,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 531 flow. Second operand has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 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) [2022-11-25 17:37:13,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:37:13,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 172 [2022-11-25 17:37:13,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:37:13,525 INFO L130 PetriNetUnfolder]: 1459/2232 cut-off events. [2022-11-25 17:37:13,525 INFO L131 PetriNetUnfolder]: For 9482/9482 co-relation queries the response was YES. [2022-11-25 17:37:13,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8794 conditions, 2232 events. 1459/2232 cut-off events. For 9482/9482 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 10749 event pairs, 356 based on Foata normal form. 36/2268 useless extension candidates. Maximal degree in co-relation 8764. Up to 1124 conditions per place. [2022-11-25 17:37:13,546 INFO L137 encePairwiseOnDemand]: 165/172 looper letters, 42 selfloop transitions, 18 changer transitions 7/67 dead transitions. [2022-11-25 17:37:13,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 67 transitions, 776 flow [2022-11-25 17:37:13,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:37:13,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:37:13,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 397 transitions. [2022-11-25 17:37:13,549 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5770348837209303 [2022-11-25 17:37:13,549 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 397 transitions. [2022-11-25 17:37:13,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 397 transitions. [2022-11-25 17:37:13,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:37:13,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 397 transitions. [2022-11-25 17:37:13,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 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) [2022-11-25 17:37:13,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 172.0) internal successors, (860), 5 states have internal predecessors, (860), 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) [2022-11-25 17:37:13,554 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 172.0) internal successors, (860), 5 states have internal predecessors, (860), 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) [2022-11-25 17:37:13,554 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 531 flow. Second operand 4 states and 397 transitions. [2022-11-25 17:37:13,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 67 transitions, 776 flow [2022-11-25 17:37:13,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 67 transitions, 761 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-25 17:37:13,583 INFO L231 Difference]: Finished difference. Result has 60 places, 42 transitions, 537 flow [2022-11-25 17:37:13,584 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=537, PETRI_PLACES=60, PETRI_TRANSITIONS=42} [2022-11-25 17:37:13,585 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2022-11-25 17:37:13,585 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 42 transitions, 537 flow [2022-11-25 17:37:13,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 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) [2022-11-25 17:37:13,586 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:37:13,586 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:37:13,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:37:13,586 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:37:13,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:37:13,587 INFO L85 PathProgramCache]: Analyzing trace with hash 429968589, now seen corresponding path program 1 times [2022-11-25 17:37:13,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:37:13,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829910435] [2022-11-25 17:37:13,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:37:13,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:37:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:13,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:37:13,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:37:13,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829910435] [2022-11-25 17:37:13,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829910435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:37:13,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:37:13,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:37:13,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012640381] [2022-11-25 17:37:13,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:37:13,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:37:13,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:37:13,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:37:13,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:37:13,785 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 172 [2022-11-25 17:37:13,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 42 transitions, 537 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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) [2022-11-25 17:37:13,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:37:13,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 172 [2022-11-25 17:37:13,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:37:14,036 INFO L130 PetriNetUnfolder]: 785/1282 cut-off events. [2022-11-25 17:37:14,036 INFO L131 PetriNetUnfolder]: For 7177/7230 co-relation queries the response was YES. [2022-11-25 17:37:14,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4957 conditions, 1282 events. 785/1282 cut-off events. For 7177/7230 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6465 event pairs, 231 based on Foata normal form. 61/1315 useless extension candidates. Maximal degree in co-relation 4924. Up to 1152 conditions per place. [2022-11-25 17:37:14,048 INFO L137 encePairwiseOnDemand]: 166/172 looper letters, 52 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2022-11-25 17:37:14,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 911 flow [2022-11-25 17:37:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:37:14,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:37:14,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2022-11-25 17:37:14,051 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6007751937984496 [2022-11-25 17:37:14,051 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2022-11-25 17:37:14,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2022-11-25 17:37:14,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:37:14,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2022-11-25 17:37:14,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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) [2022-11-25 17:37:14,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 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) [2022-11-25 17:37:14,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 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) [2022-11-25 17:37:14,055 INFO L175 Difference]: Start difference. First operand has 60 places, 42 transitions, 537 flow. Second operand 3 states and 310 transitions. [2022-11-25 17:37:14,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 911 flow [2022-11-25 17:37:14,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 66 transitions, 857 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-11-25 17:37:14,070 INFO L231 Difference]: Finished difference. Result has 61 places, 46 transitions, 534 flow [2022-11-25 17:37:14,070 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=534, PETRI_PLACES=61, PETRI_TRANSITIONS=46} [2022-11-25 17:37:14,074 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 28 predicate places. [2022-11-25 17:37:14,074 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 46 transitions, 534 flow [2022-11-25 17:37:14,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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) [2022-11-25 17:37:14,075 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:37:14,075 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:37:14,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:37:14,076 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:37:14,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:37:14,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1560028946, now seen corresponding path program 1 times [2022-11-25 17:37:14,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:37:14,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581336600] [2022-11-25 17:37:14,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:37:14,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:37:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:14,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:37:14,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:37:14,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581336600] [2022-11-25 17:37:14,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581336600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:37:14,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:37:14,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:37:14,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064513864] [2022-11-25 17:37:14,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:37:14,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:37:14,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:37:14,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:37:14,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:37:14,316 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 172 [2022-11-25 17:37:14,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 46 transitions, 534 flow. Second operand has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 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) [2022-11-25 17:37:14,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:37:14,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 172 [2022-11-25 17:37:14,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:37:14,522 INFO L130 PetriNetUnfolder]: 545/945 cut-off events. [2022-11-25 17:37:14,523 INFO L131 PetriNetUnfolder]: For 4375/4470 co-relation queries the response was YES. [2022-11-25 17:37:14,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4320 conditions, 945 events. 545/945 cut-off events. For 4375/4470 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4612 event pairs, 71 based on Foata normal form. 105/1033 useless extension candidates. Maximal degree in co-relation 4286. Up to 616 conditions per place. [2022-11-25 17:37:14,535 INFO L137 encePairwiseOnDemand]: 166/172 looper letters, 66 selfloop transitions, 9 changer transitions 0/84 dead transitions. [2022-11-25 17:37:14,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 84 transitions, 1108 flow [2022-11-25 17:37:14,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:37:14,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:37:14,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 413 transitions. [2022-11-25 17:37:14,538 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6002906976744186 [2022-11-25 17:37:14,539 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 413 transitions. [2022-11-25 17:37:14,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 413 transitions. [2022-11-25 17:37:14,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:37:14,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 413 transitions. [2022-11-25 17:37:14,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 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) [2022-11-25 17:37:14,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 172.0) internal successors, (860), 5 states have internal predecessors, (860), 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) [2022-11-25 17:37:14,543 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 172.0) internal successors, (860), 5 states have internal predecessors, (860), 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) [2022-11-25 17:37:14,543 INFO L175 Difference]: Start difference. First operand has 61 places, 46 transitions, 534 flow. Second operand 4 states and 413 transitions. [2022-11-25 17:37:14,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 84 transitions, 1108 flow [2022-11-25 17:37:14,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 84 transitions, 1065 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:37:14,557 INFO L231 Difference]: Finished difference. Result has 63 places, 50 transitions, 560 flow [2022-11-25 17:37:14,558 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=560, PETRI_PLACES=63, PETRI_TRANSITIONS=50} [2022-11-25 17:37:14,560 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 30 predicate places. [2022-11-25 17:37:14,560 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 50 transitions, 560 flow [2022-11-25 17:37:14,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 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) [2022-11-25 17:37:14,563 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:37:14,563 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:37:14,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:37:14,564 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:37:14,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:37:14,565 INFO L85 PathProgramCache]: Analyzing trace with hash 346437883, now seen corresponding path program 1 times [2022-11-25 17:37:14,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:37:14,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587932885] [2022-11-25 17:37:14,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:37:14,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:37:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:14,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:37:14,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:37:14,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587932885] [2022-11-25 17:37:14,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587932885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:37:14,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:37:14,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:37:14,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187243537] [2022-11-25 17:37:14,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:37:14,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:37:14,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:37:14,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:37:14,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:37:14,794 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 172 [2022-11-25 17:37:14,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 560 flow. Second operand has 5 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 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) [2022-11-25 17:37:14,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:37:14,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 172 [2022-11-25 17:37:14,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:37:15,017 INFO L130 PetriNetUnfolder]: 402/706 cut-off events. [2022-11-25 17:37:15,018 INFO L131 PetriNetUnfolder]: For 3053/3234 co-relation queries the response was YES. [2022-11-25 17:37:15,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3735 conditions, 706 events. 402/706 cut-off events. For 3053/3234 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3328 event pairs, 24 based on Foata normal form. 123/810 useless extension candidates. Maximal degree in co-relation 3700. Up to 405 conditions per place. [2022-11-25 17:37:15,025 INFO L137 encePairwiseOnDemand]: 166/172 looper letters, 72 selfloop transitions, 13 changer transitions 3/96 dead transitions. [2022-11-25 17:37:15,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 96 transitions, 1221 flow [2022-11-25 17:37:15,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:37:15,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:37:15,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 516 transitions. [2022-11-25 17:37:15,029 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6 [2022-11-25 17:37:15,029 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 516 transitions. [2022-11-25 17:37:15,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 516 transitions. [2022-11-25 17:37:15,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:37:15,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 516 transitions. [2022-11-25 17:37:15,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.2) internal successors, (516), 5 states have internal predecessors, (516), 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) [2022-11-25 17:37:15,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 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) [2022-11-25 17:37:15,034 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 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) [2022-11-25 17:37:15,034 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 560 flow. Second operand 5 states and 516 transitions. [2022-11-25 17:37:15,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 96 transitions, 1221 flow [2022-11-25 17:37:15,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 96 transitions, 1203 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-11-25 17:37:15,046 INFO L231 Difference]: Finished difference. Result has 66 places, 53 transitions, 602 flow [2022-11-25 17:37:15,047 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=602, PETRI_PLACES=66, PETRI_TRANSITIONS=53} [2022-11-25 17:37:15,048 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 33 predicate places. [2022-11-25 17:37:15,049 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 53 transitions, 602 flow [2022-11-25 17:37:15,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 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) [2022-11-25 17:37:15,049 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:37:15,050 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:37:15,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:37:15,050 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:37:15,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:37:15,051 INFO L85 PathProgramCache]: Analyzing trace with hash 2061355151, now seen corresponding path program 1 times [2022-11-25 17:37:15,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:37:15,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667746202] [2022-11-25 17:37:15,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:37:15,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:37:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:15,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:37:15,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:37:15,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667746202] [2022-11-25 17:37:15,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667746202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:37:15,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:37:15,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:37:15,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594872376] [2022-11-25 17:37:15,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:37:15,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:37:15,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:37:15,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:37:15,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:37:15,279 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 172 [2022-11-25 17:37:15,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 53 transitions, 602 flow. Second operand has 5 states, 5 states have (on average 91.6) internal successors, (458), 5 states have internal predecessors, (458), 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) [2022-11-25 17:37:15,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:37:15,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 172 [2022-11-25 17:37:15,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:37:15,558 INFO L130 PetriNetUnfolder]: 548/965 cut-off events. [2022-11-25 17:37:15,558 INFO L131 PetriNetUnfolder]: For 5977/5977 co-relation queries the response was YES. [2022-11-25 17:37:15,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5513 conditions, 965 events. 548/965 cut-off events. For 5977/5977 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4514 event pairs, 63 based on Foata normal form. 6/971 useless extension candidates. Maximal degree in co-relation 5477. Up to 448 conditions per place. [2022-11-25 17:37:15,567 INFO L137 encePairwiseOnDemand]: 164/172 looper letters, 53 selfloop transitions, 16 changer transitions 62/131 dead transitions. [2022-11-25 17:37:15,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 131 transitions, 1491 flow [2022-11-25 17:37:15,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:37:15,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:37:15,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 588 transitions. [2022-11-25 17:37:15,570 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5697674418604651 [2022-11-25 17:37:15,570 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 588 transitions. [2022-11-25 17:37:15,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 588 transitions. [2022-11-25 17:37:15,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:37:15,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 588 transitions. [2022-11-25 17:37:15,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 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) [2022-11-25 17:37:15,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 172.0) internal successors, (1204), 7 states have internal predecessors, (1204), 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) [2022-11-25 17:37:15,576 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 172.0) internal successors, (1204), 7 states have internal predecessors, (1204), 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) [2022-11-25 17:37:15,576 INFO L175 Difference]: Start difference. First operand has 66 places, 53 transitions, 602 flow. Second operand 6 states and 588 transitions. [2022-11-25 17:37:15,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 131 transitions, 1491 flow [2022-11-25 17:37:15,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 131 transitions, 1325 flow, removed 39 selfloop flow, removed 4 redundant places. [2022-11-25 17:37:15,597 INFO L231 Difference]: Finished difference. Result has 69 places, 47 transitions, 509 flow [2022-11-25 17:37:15,598 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=509, PETRI_PLACES=69, PETRI_TRANSITIONS=47} [2022-11-25 17:37:15,598 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 36 predicate places. [2022-11-25 17:37:15,599 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 47 transitions, 509 flow [2022-11-25 17:37:15,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.6) internal successors, (458), 5 states have internal predecessors, (458), 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) [2022-11-25 17:37:15,599 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:37:15,599 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:37:15,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:37:15,600 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:37:15,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:37:15,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2075041861, now seen corresponding path program 2 times [2022-11-25 17:37:15,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:37:15,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880565234] [2022-11-25 17:37:15,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:37:15,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:37:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:15,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:37:15,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:37:15,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880565234] [2022-11-25 17:37:15,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880565234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:37:15,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:37:15,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:37:15,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708823318] [2022-11-25 17:37:15,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:37:15,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:37:15,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:37:15,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:37:15,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:37:15,802 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 172 [2022-11-25 17:37:15,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 47 transitions, 509 flow. Second operand has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 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) [2022-11-25 17:37:15,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:37:15,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 172 [2022-11-25 17:37:15,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:37:15,962 INFO L130 PetriNetUnfolder]: 209/390 cut-off events. [2022-11-25 17:37:15,962 INFO L131 PetriNetUnfolder]: For 1978/2060 co-relation queries the response was YES. [2022-11-25 17:37:15,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1998 conditions, 390 events. 209/390 cut-off events. For 1978/2060 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1596 event pairs, 12 based on Foata normal form. 63/444 useless extension candidates. Maximal degree in co-relation 1966. Up to 127 conditions per place. [2022-11-25 17:37:15,966 INFO L137 encePairwiseOnDemand]: 166/172 looper letters, 21 selfloop transitions, 17 changer transitions 37/77 dead transitions. [2022-11-25 17:37:15,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 77 transitions, 987 flow [2022-11-25 17:37:15,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:37:15,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:37:15,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 606 transitions. [2022-11-25 17:37:15,970 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5872093023255814 [2022-11-25 17:37:15,970 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 606 transitions. [2022-11-25 17:37:15,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 606 transitions. [2022-11-25 17:37:15,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:37:15,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 606 transitions. [2022-11-25 17:37:15,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 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) [2022-11-25 17:37:15,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 172.0) internal successors, (1204), 7 states have internal predecessors, (1204), 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) [2022-11-25 17:37:15,977 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 172.0) internal successors, (1204), 7 states have internal predecessors, (1204), 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) [2022-11-25 17:37:15,977 INFO L175 Difference]: Start difference. First operand has 69 places, 47 transitions, 509 flow. Second operand 6 states and 606 transitions. [2022-11-25 17:37:15,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 77 transitions, 987 flow [2022-11-25 17:37:15,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 77 transitions, 872 flow, removed 4 selfloop flow, removed 9 redundant places. [2022-11-25 17:37:15,989 INFO L231 Difference]: Finished difference. Result has 64 places, 32 transitions, 284 flow [2022-11-25 17:37:15,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=284, PETRI_PLACES=64, PETRI_TRANSITIONS=32} [2022-11-25 17:37:15,990 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 31 predicate places. [2022-11-25 17:37:15,990 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 32 transitions, 284 flow [2022-11-25 17:37:15,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 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) [2022-11-25 17:37:15,991 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:37:15,991 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] [2022-11-25 17:37:15,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:37:15,992 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:37:15,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:37:15,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1060775618, now seen corresponding path program 1 times [2022-11-25 17:37:15,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:37:15,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069424063] [2022-11-25 17:37:15,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:37:15,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:37:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:16,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:37:16,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:37:16,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069424063] [2022-11-25 17:37:16,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069424063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:37:16,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:37:16,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:37:16,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605582153] [2022-11-25 17:37:16,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:37:16,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:37:16,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:37:16,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:37:16,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:37:16,176 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 172 [2022-11-25 17:37:16,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 32 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 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) [2022-11-25 17:37:16,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:37:16,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 172 [2022-11-25 17:37:16,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:37:16,230 INFO L130 PetriNetUnfolder]: 42/91 cut-off events. [2022-11-25 17:37:16,230 INFO L131 PetriNetUnfolder]: For 541/542 co-relation queries the response was YES. [2022-11-25 17:37:16,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 544 conditions, 91 events. 42/91 cut-off events. For 541/542 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 180 event pairs, 12 based on Foata normal form. 1/91 useless extension candidates. Maximal degree in co-relation 512. Up to 57 conditions per place. [2022-11-25 17:37:16,231 INFO L137 encePairwiseOnDemand]: 169/172 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2022-11-25 17:37:16,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 35 transitions, 376 flow [2022-11-25 17:37:16,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:37:16,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:37:16,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 393 transitions. [2022-11-25 17:37:16,234 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5712209302325582 [2022-11-25 17:37:16,234 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 393 transitions. [2022-11-25 17:37:16,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 393 transitions. [2022-11-25 17:37:16,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:37:16,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 393 transitions. [2022-11-25 17:37:16,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:16,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 172.0) internal successors, (860), 5 states have internal predecessors, (860), 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) [2022-11-25 17:37:16,239 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 172.0) internal successors, (860), 5 states have internal predecessors, (860), 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) [2022-11-25 17:37:16,239 INFO L175 Difference]: Start difference. First operand has 64 places, 32 transitions, 284 flow. Second operand 4 states and 393 transitions. [2022-11-25 17:37:16,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 35 transitions, 376 flow [2022-11-25 17:37:16,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 35 transitions, 238 flow, removed 16 selfloop flow, removed 25 redundant places. [2022-11-25 17:37:16,242 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2022-11-25 17:37:16,243 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2022-11-25 17:37:16,243 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2022-11-25 17:37:16,244 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2022-11-25 17:37:16,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 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) [2022-11-25 17:37:16,252 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-11-25 17:37:16,253 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-11-25 17:37:16,253 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-11-25 17:37:16,253 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-11-25 17:37:16,254 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-11-25 17:37:16,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 17:37:16,254 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:37:16,259 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 17:37:16,259 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:37:16,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:37:16 BasicIcfg [2022-11-25 17:37:16,263 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:37:16,264 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:37:16,264 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:37:16,264 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:37:16,265 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:37:03" (3/4) ... [2022-11-25 17:37:16,269 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 17:37:16,277 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-25 17:37:16,277 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-25 17:37:16,277 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-25 17:37:16,278 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2022-11-25 17:37:16,283 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-25 17:37:16,283 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 17:37:16,283 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 17:37:16,284 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 17:37:16,321 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642e09e4-2250-42e0-9bd5-a9b202a5aa44/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:37:16,322 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:37:16,323 INFO L158 Benchmark]: Toolchain (without parser) took 14567.03ms. Allocated memory was 174.1MB in the beginning and 308.3MB in the end (delta: 134.2MB). Free memory was 139.0MB in the beginning and 234.8MB in the end (delta: -95.8MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. [2022-11-25 17:37:16,323 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 123.7MB. Free memory was 91.9MB in the beginning and 91.8MB in the end (delta: 69.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:37:16,324 INFO L158 Benchmark]: CACSL2BoogieTranslator took 723.27ms. Allocated memory is still 174.1MB. Free memory was 139.0MB in the beginning and 125.8MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 17:37:16,324 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.84ms. Allocated memory is still 174.1MB. Free memory was 125.8MB in the beginning and 123.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:37:16,324 INFO L158 Benchmark]: Boogie Preprocessor took 56.38ms. Allocated memory is still 174.1MB. Free memory was 123.7MB in the beginning and 122.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:37:16,325 INFO L158 Benchmark]: RCFGBuilder took 707.86ms. Allocated memory is still 174.1MB. Free memory was 122.2MB in the beginning and 107.3MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 17:37:16,325 INFO L158 Benchmark]: TraceAbstraction took 12957.76ms. Allocated memory was 174.1MB in the beginning and 308.3MB in the end (delta: 134.2MB). Free memory was 107.0MB in the beginning and 237.9MB in the end (delta: -131.0MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2022-11-25 17:37:16,326 INFO L158 Benchmark]: Witness Printer took 58.35ms. Allocated memory is still 308.3MB. Free memory was 237.9MB in the beginning and 234.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:37:16,328 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 123.7MB. Free memory was 91.9MB in the beginning and 91.8MB in the end (delta: 69.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 723.27ms. Allocated memory is still 174.1MB. Free memory was 139.0MB in the beginning and 125.8MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.84ms. Allocated memory is still 174.1MB. Free memory was 125.8MB in the beginning and 123.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.38ms. Allocated memory is still 174.1MB. Free memory was 123.7MB in the beginning and 122.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 707.86ms. Allocated memory is still 174.1MB. Free memory was 122.2MB in the beginning and 107.3MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 12957.76ms. Allocated memory was 174.1MB in the beginning and 308.3MB in the end (delta: 134.2MB). Free memory was 107.0MB in the beginning and 237.9MB in the end (delta: -131.0MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * Witness Printer took 58.35ms. Allocated memory is still 308.3MB. Free memory was 237.9MB in the beginning and 234.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.6s, 97 PlacesBefore, 33 PlacesAfterwards, 85 TransitionsBefore, 20 TransitionsAfterwards, 1630 CoEnabledTransitionPairs, 5 FixpointIterations, 22 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 67 TotalNumberOfCompositions, 2582 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1436, independent: 1359, independent conditional: 0, independent unconditional: 1359, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1056, independent: 1014, independent conditional: 0, independent unconditional: 1014, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1056, independent: 1002, independent conditional: 0, independent unconditional: 1002, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 54, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 212, independent: 61, independent conditional: 0, independent unconditional: 61, dependent: 151, dependent conditional: 0, dependent unconditional: 151, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1436, independent: 345, independent conditional: 0, independent unconditional: 345, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 1056, unknown conditional: 0, unknown unconditional: 1056] , Statistics on independence cache: Total cache size (in pairs): 76, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 134 locations, 5 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: 12.7s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 456 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 335 mSDsluCounter, 101 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 51 mSDsCounter, 106 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 790 IncrementalHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 106 mSolverCounterUnsat, 50 mSDtfsCounter, 790 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=602occurred in iteration=10, InterpolantAutomatonStates: 55, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 185 NumberOfCodeBlocks, 185 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 172 ConstructedInterpolants, 0 QuantifiedInterpolants, 717 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 17:37:16,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642e09e4-2250-42e0-9bd5-a9b202a5aa44/bin/uautomizer-ZsLfNo2U6R/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