./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a0f40f7-2fa7-40b2-9451-f40f0cd4ad1e/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a0f40f7-2fa7-40b2-9451-f40f0cd4ad1e/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_7a0f40f7-2fa7-40b2-9451-f40f0cd4ad1e/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a0f40f7-2fa7-40b2-9451-f40f0cd4ad1e/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a0f40f7-2fa7-40b2-9451-f40f0cd4ad1e/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_7a0f40f7-2fa7-40b2-9451-f40f0cd4ad1e/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 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 --- 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 17:34:55,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:34:55,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:34:55,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:34:55,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:34:55,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:34:55,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:34:55,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:34:55,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:34:55,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:34:55,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:34:55,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:34:55,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:34:55,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:34:55,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:34:55,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:34:55,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:34:55,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:34:55,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:34:55,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:34:55,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:34:55,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:34:55,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:34:55,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:34:55,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:34:55,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:34:55,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:34:55,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:34:55,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:34:55,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:34:55,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:34:55,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:34:55,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:34:55,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:34:55,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:34:55,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:34:55,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:34:55,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:34:55,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:34:55,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:34:55,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:34:55,368 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a0f40f7-2fa7-40b2-9451-f40f0cd4ad1e/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:34:55,407 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:34:55,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:34:55,409 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:34:55,409 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:34:55,410 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:34:55,411 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:34:55,412 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:34:55,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:34:55,412 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:34:55,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:34:55,414 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:34:55,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:34:55,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:34:55,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:34:55,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:34:55,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:34:55,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:34:55,416 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:34:55,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:34:55,416 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:34:55,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:34:55,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:34:55,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:34:55,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:34:55,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:34:55,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:34:55,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:34:55,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:34:55,419 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:34:55,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:34:55,420 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:34:55,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:34:55,421 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:34:55,421 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:34:55,421 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_7a0f40f7-2fa7-40b2-9451-f40f0cd4ad1e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a0f40f7-2fa7-40b2-9451-f40f0cd4ad1e/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 [2022-11-25 17:34:55,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:34:55,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:34:55,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:34:55,907 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:34:55,908 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:34:55,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a0f40f7-2fa7-40b2-9451-f40f0cd4ad1e/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2022-11-25 17:34:59,649 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:34:59,979 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:34:59,983 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a0f40f7-2fa7-40b2-9451-f40f0cd4ad1e/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2022-11-25 17:34:59,995 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a0f40f7-2fa7-40b2-9451-f40f0cd4ad1e/bin/uautomizer-ZsLfNo2U6R/data/d7bb10c09/9f0e72b4d050456bb26b15ada0290054/FLAG035be1fef [2022-11-25 17:35:00,018 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a0f40f7-2fa7-40b2-9451-f40f0cd4ad1e/bin/uautomizer-ZsLfNo2U6R/data/d7bb10c09/9f0e72b4d050456bb26b15ada0290054 [2022-11-25 17:35:00,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:35:00,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:35:00,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:35:00,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:35:00,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:35:00,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:35:00" (1/1) ... [2022-11-25 17:35:00,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7444736d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:00, skipping insertion in model container [2022-11-25 17:35:00,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:35:00" (1/1) ... [2022-11-25 17:35:00,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:35:00,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:35:00,354 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,356 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,356 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,358 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,359 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,362 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,363 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,365 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,366 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,367 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,368 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,369 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,373 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,373 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,374 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,375 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,375 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,376 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,376 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,377 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,378 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,379 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,379 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,380 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,400 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,402 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,404 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,405 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,408 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,408 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,413 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,413 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,414 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,415 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,416 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,418 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,419 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,420 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,420 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,421 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,422 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,422 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,424 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,425 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,425 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,426 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,427 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,449 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_7a0f40f7-2fa7-40b2-9451-f40f0cd4ad1e/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4722,4735] [2022-11-25 17:35:00,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:35:00,474 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:35:00,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,503 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,504 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,504 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,505 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,505 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,505 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,506 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,507 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,507 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,507 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,508 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,509 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,510 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,510 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,511 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,512 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,512 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,513 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,514 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,514 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,515 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,515 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,517 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,536 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,543 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,543 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,544 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,544 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,547 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,547 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,548 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,548 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,549 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,550 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,550 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,551 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,553 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,554 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,564 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,564 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:35:00,565 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:35:00,572 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_7a0f40f7-2fa7-40b2-9451-f40f0cd4ad1e/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4722,4735] [2022-11-25 17:35:00,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:35:00,604 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:35:00,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:00 WrapperNode [2022-11-25 17:35:00,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:35:00,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:35:00,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:35:00,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:35:00,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:00" (1/1) ... [2022-11-25 17:35:00,646 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:00" (1/1) ... [2022-11-25 17:35:00,696 INFO L138 Inliner]: procedures = 25, calls = 98, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 253 [2022-11-25 17:35:00,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:35:00,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:35:00,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:35:00,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:35:00,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:00" (1/1) ... [2022-11-25 17:35:00,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:00" (1/1) ... [2022-11-25 17:35:00,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:00" (1/1) ... [2022-11-25 17:35:00,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:00" (1/1) ... [2022-11-25 17:35:00,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:00" (1/1) ... [2022-11-25 17:35:00,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:00" (1/1) ... [2022-11-25 17:35:00,759 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:00" (1/1) ... [2022-11-25 17:35:00,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:00" (1/1) ... [2022-11-25 17:35:00,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:35:00,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:35:00,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:35:00,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:35:00,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:00" (1/1) ... [2022-11-25 17:35:00,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:35:00,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a0f40f7-2fa7-40b2-9451-f40f0cd4ad1e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:35:00,823 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a0f40f7-2fa7-40b2-9451-f40f0cd4ad1e/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:35:00,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a0f40f7-2fa7-40b2-9451-f40f0cd4ad1e/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:35:00,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:35:00,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:35:00,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:35:00,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:35:00,894 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:35:00,895 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:35:00,895 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:35:00,902 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:35:00,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 17:35:00,902 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 17:35:00,903 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-25 17:35:00,903 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-25 17:35:00,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:35:00,903 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-25 17:35:00,904 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-25 17:35:00,904 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-25 17:35:00,904 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-25 17:35:00,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:35:00,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:35:00,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:35:00,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:35:00,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:35:00,913 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 17:35:01,074 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:35:01,076 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:35:01,532 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:35:01,658 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:35:01,659 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:35:01,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:35:01 BoogieIcfgContainer [2022-11-25 17:35:01,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:35:01,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:35:01,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:35:01,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:35:01,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:35:00" (1/3) ... [2022-11-25 17:35:01,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@109b97af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:35:01, skipping insertion in model container [2022-11-25 17:35:01,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:00" (2/3) ... [2022-11-25 17:35:01,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@109b97af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:35:01, skipping insertion in model container [2022-11-25 17:35:01,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:35:01" (3/3) ... [2022-11-25 17:35:01,681 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2022-11-25 17:35:01,697 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:35:01,711 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:35:01,712 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:35:01,712 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:35:02,015 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-11-25 17:35:02,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 235 transitions, 542 flow [2022-11-25 17:35:02,216 INFO L130 PetriNetUnfolder]: 8/207 cut-off events. [2022-11-25 17:35:02,216 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 17:35:02,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 207 events. 8/207 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 238 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 177. Up to 3 conditions per place. [2022-11-25 17:35:02,229 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 235 transitions, 542 flow [2022-11-25 17:35:02,236 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 198 transitions, 444 flow [2022-11-25 17:35:02,241 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:35:02,260 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 198 transitions, 444 flow [2022-11-25 17:35:02,264 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 198 transitions, 444 flow [2022-11-25 17:35:02,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 198 transitions, 444 flow [2022-11-25 17:35:02,375 INFO L130 PetriNetUnfolder]: 8/198 cut-off events. [2022-11-25 17:35:02,375 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 17:35:02,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 198 events. 8/198 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 237 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 177. Up to 3 conditions per place. [2022-11-25 17:35:02,394 INFO L119 LiptonReduction]: Number of co-enabled transitions 7736 [2022-11-25 17:35:09,775 INFO L134 LiptonReduction]: Checked pairs total: 36856 [2022-11-25 17:35:09,775 INFO L136 LiptonReduction]: Total number of compositions: 149 [2022-11-25 17:35:09,796 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:35:09,803 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;@1598a65a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:35:09,804 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-25 17:35:09,829 INFO L130 PetriNetUnfolder]: 5/67 cut-off events. [2022-11-25 17:35:09,835 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 17:35:09,835 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:35:09,836 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:09,837 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 17:35:09,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:09,851 INFO L85 PathProgramCache]: Analyzing trace with hash 226737365, now seen corresponding path program 1 times [2022-11-25 17:35:09,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:35:09,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320714182] [2022-11-25 17:35:09,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:09,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:35:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:10,271 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 17:35:10,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:35:10,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320714182] [2022-11-25 17:35:10,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320714182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:35:10,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:35:10,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:35:10,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099714124] [2022-11-25 17:35:10,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:10,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:35:10,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:35:10,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:35:10,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:35:10,319 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 388 [2022-11-25 17:35:10,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 68 transitions, 184 flow. Second operand has 2 states, 2 states have (on average 226.0) internal successors, (452), 2 states have internal predecessors, (452), 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 17:35:10,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:35:10,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 388 [2022-11-25 17:35:10,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:35:14,596 INFO L130 PetriNetUnfolder]: 17085/24119 cut-off events. [2022-11-25 17:35:14,597 INFO L131 PetriNetUnfolder]: For 3791/3791 co-relation queries the response was YES. [2022-11-25 17:35:14,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50648 conditions, 24119 events. 17085/24119 cut-off events. For 3791/3791 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 139564 event pairs, 16065 based on Foata normal form. 102/22900 useless extension candidates. Maximal degree in co-relation 49955. Up to 22289 conditions per place. [2022-11-25 17:35:14,839 INFO L137 encePairwiseOnDemand]: 387/388 looper letters, 45 selfloop transitions, 0 changer transitions 0/67 dead transitions. [2022-11-25 17:35:14,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 67 transitions, 272 flow [2022-11-25 17:35:14,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:35:14,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:35:14,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 458 transitions. [2022-11-25 17:35:14,870 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5902061855670103 [2022-11-25 17:35:14,872 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 458 transitions. [2022-11-25 17:35:14,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 458 transitions. [2022-11-25 17:35:14,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:35:14,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 458 transitions. [2022-11-25 17:35:14,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 229.0) internal successors, (458), 2 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 17:35:14,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 388.0) internal successors, (1164), 3 states have internal predecessors, (1164), 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 17:35:14,901 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 388.0) internal successors, (1164), 3 states have internal predecessors, (1164), 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 17:35:14,904 INFO L175 Difference]: Start difference. First operand has 82 places, 68 transitions, 184 flow. Second operand 2 states and 458 transitions. [2022-11-25 17:35:14,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 67 transitions, 272 flow [2022-11-25 17:35:15,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 67 transitions, 240 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-25 17:35:15,007 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 150 flow [2022-11-25 17:35:15,009 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=150, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2022-11-25 17:35:15,015 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -11 predicate places. [2022-11-25 17:35:15,016 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 150 flow [2022-11-25 17:35:15,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 226.0) internal successors, (452), 2 states have internal predecessors, (452), 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 17:35:15,017 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:35:15,018 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:15,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:35:15,018 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 17:35:15,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:15,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1812870210, now seen corresponding path program 1 times [2022-11-25 17:35:15,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:35:15,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37966864] [2022-11-25 17:35:15,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:15,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:35:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:17,325 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 17:35:17,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:35:17,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37966864] [2022-11-25 17:35:17,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37966864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:35:17,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:35:17,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-25 17:35:17,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492270480] [2022-11-25 17:35:17,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:17,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-25 17:35:17,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:35:17,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-25 17:35:17,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2022-11-25 17:35:18,534 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 388 [2022-11-25 17:35:18,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 150 flow. Second operand has 19 states, 19 states have (on average 177.3684210526316) internal successors, (3370), 19 states have internal predecessors, (3370), 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 17:35:18,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:35:18,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 388 [2022-11-25 17:35:18,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:35:31,712 INFO L130 PetriNetUnfolder]: 50458/67429 cut-off events. [2022-11-25 17:35:31,713 INFO L131 PetriNetUnfolder]: For 2110/2110 co-relation queries the response was YES. [2022-11-25 17:35:31,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134542 conditions, 67429 events. 50458/67429 cut-off events. For 2110/2110 co-relation queries the response was YES. Maximal size of possible extension queue 1399. Compared 373074 event pairs, 7214 based on Foata normal form. 1/64469 useless extension candidates. Maximal degree in co-relation 134539. Up to 47277 conditions per place. [2022-11-25 17:35:32,152 INFO L137 encePairwiseOnDemand]: 370/388 looper letters, 477 selfloop transitions, 162 changer transitions 18/675 dead transitions. [2022-11-25 17:35:32,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 675 transitions, 2850 flow [2022-11-25 17:35:32,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-25 17:35:32,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-25 17:35:32,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 8358 transitions. [2022-11-25 17:35:32,178 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48957357075913777 [2022-11-25 17:35:32,179 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 8358 transitions. [2022-11-25 17:35:32,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 8358 transitions. [2022-11-25 17:35:32,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:35:32,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 8358 transitions. [2022-11-25 17:35:32,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 189.95454545454547) internal successors, (8358), 44 states have internal predecessors, (8358), 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 17:35:32,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 388.0) internal successors, (17460), 45 states have internal predecessors, (17460), 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 17:35:32,265 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 388.0) internal successors, (17460), 45 states have internal predecessors, (17460), 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 17:35:32,265 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 150 flow. Second operand 44 states and 8358 transitions. [2022-11-25 17:35:32,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 675 transitions, 2850 flow [2022-11-25 17:35:32,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 675 transitions, 2850 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:35:32,285 INFO L231 Difference]: Finished difference. Result has 134 places, 236 transitions, 1004 flow [2022-11-25 17:35:32,286 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1004, PETRI_PLACES=134, PETRI_TRANSITIONS=236} [2022-11-25 17:35:32,288 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 52 predicate places. [2022-11-25 17:35:32,288 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 236 transitions, 1004 flow [2022-11-25 17:35:32,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 177.3684210526316) internal successors, (3370), 19 states have internal predecessors, (3370), 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 17:35:32,291 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:35:32,291 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:32,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:35:32,292 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 17:35:32,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:32,296 INFO L85 PathProgramCache]: Analyzing trace with hash -607428536, now seen corresponding path program 2 times [2022-11-25 17:35:32,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:35:32,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554017286] [2022-11-25 17:35:32,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:32,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:35:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:32,934 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 17:35:32,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:35:32,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554017286] [2022-11-25 17:35:32,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554017286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:35:32,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:35:32,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:35:32,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967893724] [2022-11-25 17:35:32,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:32,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:35:32,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:35:32,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:35:32,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:35:32,959 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 388 [2022-11-25 17:35:32,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 236 transitions, 1004 flow. Second operand has 4 states, 4 states have (on average 212.25) internal successors, (849), 4 states have internal predecessors, (849), 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 17:35:32,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:35:32,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 388 [2022-11-25 17:35:32,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:35:39,658 INFO L130 PetriNetUnfolder]: 31905/44663 cut-off events. [2022-11-25 17:35:39,659 INFO L131 PetriNetUnfolder]: For 81755/82081 co-relation queries the response was YES. [2022-11-25 17:35:39,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129418 conditions, 44663 events. 31905/44663 cut-off events. For 81755/82081 co-relation queries the response was YES. Maximal size of possible extension queue 1122. Compared 266289 event pairs, 13596 based on Foata normal form. 552/42353 useless extension candidates. Maximal degree in co-relation 129394. Up to 35261 conditions per place. [2022-11-25 17:35:40,205 INFO L137 encePairwiseOnDemand]: 384/388 looper letters, 274 selfloop transitions, 14 changer transitions 0/316 dead transitions. [2022-11-25 17:35:40,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 316 transitions, 1911 flow [2022-11-25 17:35:40,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:35:40,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:35:40,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 900 transitions. [2022-11-25 17:35:40,210 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5798969072164949 [2022-11-25 17:35:40,211 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 900 transitions. [2022-11-25 17:35:40,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 900 transitions. [2022-11-25 17:35:40,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:35:40,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 900 transitions. [2022-11-25 17:35:40,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 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 17:35:40,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 388.0) internal successors, (1940), 5 states have internal predecessors, (1940), 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 17:35:40,221 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 388.0) internal successors, (1940), 5 states have internal predecessors, (1940), 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 17:35:40,222 INFO L175 Difference]: Start difference. First operand has 134 places, 236 transitions, 1004 flow. Second operand 4 states and 900 transitions. [2022-11-25 17:35:40,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 316 transitions, 1911 flow [2022-11-25 17:35:41,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 316 transitions, 1911 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:35:41,903 INFO L231 Difference]: Finished difference. Result has 138 places, 236 transitions, 1047 flow [2022-11-25 17:35:41,904 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1047, PETRI_PLACES=138, PETRI_TRANSITIONS=236} [2022-11-25 17:35:41,905 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 56 predicate places. [2022-11-25 17:35:41,905 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 236 transitions, 1047 flow [2022-11-25 17:35:41,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 212.25) internal successors, (849), 4 states have internal predecessors, (849), 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 17:35:41,906 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:35:41,907 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:41,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:35:41,907 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 17:35:41,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:41,908 INFO L85 PathProgramCache]: Analyzing trace with hash 199563528, now seen corresponding path program 3 times [2022-11-25 17:35:41,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:35:41,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502300133] [2022-11-25 17:35:41,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:41,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:35:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:42,323 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 17:35:42,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:35:42,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502300133] [2022-11-25 17:35:42,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502300133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:35:42,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:35:42,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:35:42,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866486019] [2022-11-25 17:35:42,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:42,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:35:42,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:35:42,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:35:42,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:35:42,345 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 388 [2022-11-25 17:35:42,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 236 transitions, 1047 flow. Second operand has 4 states, 4 states have (on average 212.25) internal successors, (849), 4 states have internal predecessors, (849), 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 17:35:42,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:35:42,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 388 [2022-11-25 17:35:42,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:35:46,298 INFO L130 PetriNetUnfolder]: 21999/31973 cut-off events. [2022-11-25 17:35:46,298 INFO L131 PetriNetUnfolder]: For 71916/72106 co-relation queries the response was YES. [2022-11-25 17:35:46,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96130 conditions, 31973 events. 21999/31973 cut-off events. For 71916/72106 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 194433 event pairs, 9080 based on Foata normal form. 1134/31137 useless extension candidates. Maximal degree in co-relation 96104. Up to 20269 conditions per place. [2022-11-25 17:35:46,593 INFO L137 encePairwiseOnDemand]: 384/388 looper letters, 208 selfloop transitions, 21 changer transitions 2/259 dead transitions. [2022-11-25 17:35:46,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 259 transitions, 1585 flow [2022-11-25 17:35:46,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:35:46,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:35:46,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 898 transitions. [2022-11-25 17:35:46,603 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5786082474226805 [2022-11-25 17:35:46,603 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 898 transitions. [2022-11-25 17:35:46,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 898 transitions. [2022-11-25 17:35:46,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:35:46,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 898 transitions. [2022-11-25 17:35:46,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 224.5) internal successors, (898), 4 states have internal predecessors, (898), 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 17:35:46,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 388.0) internal successors, (1940), 5 states have internal predecessors, (1940), 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 17:35:46,617 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 388.0) internal successors, (1940), 5 states have internal predecessors, (1940), 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 17:35:46,617 INFO L175 Difference]: Start difference. First operand has 138 places, 236 transitions, 1047 flow. Second operand 4 states and 898 transitions. [2022-11-25 17:35:46,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 259 transitions, 1585 flow [2022-11-25 17:35:46,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 259 transitions, 1537 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-11-25 17:35:46,870 INFO L231 Difference]: Finished difference. Result has 128 places, 179 transitions, 814 flow [2022-11-25 17:35:46,870 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=814, PETRI_PLACES=128, PETRI_TRANSITIONS=179} [2022-11-25 17:35:46,871 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 46 predicate places. [2022-11-25 17:35:46,871 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 179 transitions, 814 flow [2022-11-25 17:35:46,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 212.25) internal successors, (849), 4 states have internal predecessors, (849), 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 17:35:46,872 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:35:46,872 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:46,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:35:46,873 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 17:35:46,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:46,873 INFO L85 PathProgramCache]: Analyzing trace with hash -129521247, now seen corresponding path program 1 times [2022-11-25 17:35:46,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:35:46,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42837683] [2022-11-25 17:35:46,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:46,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:35:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:47,357 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 17:35:47,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:35:47,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42837683] [2022-11-25 17:35:47,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42837683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:35:47,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:35:47,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:35:47,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109034020] [2022-11-25 17:35:47,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:47,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:35:47,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:35:47,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:35:47,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:35:47,371 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 388 [2022-11-25 17:35:47,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 179 transitions, 814 flow. Second operand has 4 states, 4 states have (on average 212.25) internal successors, (849), 4 states have internal predecessors, (849), 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 17:35:47,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:35:47,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 388 [2022-11-25 17:35:47,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:35:50,299 INFO L130 PetriNetUnfolder]: 16145/23392 cut-off events. [2022-11-25 17:35:50,300 INFO L131 PetriNetUnfolder]: For 42978/43154 co-relation queries the response was YES. [2022-11-25 17:35:50,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68959 conditions, 23392 events. 16145/23392 cut-off events. For 42978/43154 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 134550 event pairs, 8997 based on Foata normal form. 444/22352 useless extension candidates. Maximal degree in co-relation 68935. Up to 17789 conditions per place. [2022-11-25 17:35:50,549 INFO L137 encePairwiseOnDemand]: 384/388 looper letters, 181 selfloop transitions, 7 changer transitions 0/215 dead transitions. [2022-11-25 17:35:50,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 215 transitions, 1328 flow [2022-11-25 17:35:50,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:35:50,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:35:50,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 898 transitions. [2022-11-25 17:35:50,554 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5786082474226805 [2022-11-25 17:35:50,554 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 898 transitions. [2022-11-25 17:35:50,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 898 transitions. [2022-11-25 17:35:50,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:35:50,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 898 transitions. [2022-11-25 17:35:50,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 224.5) internal successors, (898), 4 states have internal predecessors, (898), 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 17:35:50,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 388.0) internal successors, (1940), 5 states have internal predecessors, (1940), 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 17:35:50,565 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 388.0) internal successors, (1940), 5 states have internal predecessors, (1940), 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 17:35:50,565 INFO L175 Difference]: Start difference. First operand has 128 places, 179 transitions, 814 flow. Second operand 4 states and 898 transitions. [2022-11-25 17:35:50,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 215 transitions, 1328 flow [2022-11-25 17:35:50,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 215 transitions, 1270 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-25 17:35:50,737 INFO L231 Difference]: Finished difference. Result has 123 places, 167 transitions, 728 flow [2022-11-25 17:35:50,737 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=728, PETRI_PLACES=123, PETRI_TRANSITIONS=167} [2022-11-25 17:35:50,738 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 41 predicate places. [2022-11-25 17:35:50,738 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 167 transitions, 728 flow [2022-11-25 17:35:50,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 212.25) internal successors, (849), 4 states have internal predecessors, (849), 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 17:35:50,739 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:35:50,740 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:50,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:35:50,740 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 17:35:50,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:50,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1276164671, now seen corresponding path program 2 times [2022-11-25 17:35:50,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:35:50,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578164984] [2022-11-25 17:35:50,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:50,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:35:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:52,303 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 17:35:52,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:35:52,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578164984] [2022-11-25 17:35:52,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578164984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:35:52,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:35:52,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-25 17:35:52,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249014960] [2022-11-25 17:35:52,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:52,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 17:35:52,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:35:52,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 17:35:52,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-11-25 17:35:53,249 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 388 [2022-11-25 17:35:53,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 167 transitions, 728 flow. Second operand has 18 states, 18 states have (on average 177.5) internal successors, (3195), 18 states have internal predecessors, (3195), 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 17:35:53,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:35:53,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 388 [2022-11-25 17:35:53,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:36:02,558 INFO L130 PetriNetUnfolder]: 30792/41923 cut-off events. [2022-11-25 17:36:02,558 INFO L131 PetriNetUnfolder]: For 67313/67313 co-relation queries the response was YES. [2022-11-25 17:36:02,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128339 conditions, 41923 events. 30792/41923 cut-off events. For 67313/67313 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 222552 event pairs, 3570 based on Foata normal form. 1/40365 useless extension candidates. Maximal degree in co-relation 128316. Up to 28511 conditions per place. [2022-11-25 17:36:02,854 INFO L137 encePairwiseOnDemand]: 370/388 looper letters, 418 selfloop transitions, 190 changer transitions 34/660 dead transitions. [2022-11-25 17:36:02,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 660 transitions, 3874 flow [2022-11-25 17:36:02,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-25 17:36:02,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-25 17:36:02,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 7357 transitions. [2022-11-25 17:36:02,882 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48618821041501453 [2022-11-25 17:36:02,882 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 7357 transitions. [2022-11-25 17:36:02,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 7357 transitions. [2022-11-25 17:36:02,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:36:02,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 7357 transitions. [2022-11-25 17:36:02,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 188.64102564102564) internal successors, (7357), 39 states have internal predecessors, (7357), 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 17:36:02,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 388.0) internal successors, (15520), 40 states have internal predecessors, (15520), 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 17:36:02,941 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 388.0) internal successors, (15520), 40 states have internal predecessors, (15520), 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 17:36:02,942 INFO L175 Difference]: Start difference. First operand has 123 places, 167 transitions, 728 flow. Second operand 39 states and 7357 transitions. [2022-11-25 17:36:02,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 660 transitions, 3874 flow [2022-11-25 17:36:03,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 660 transitions, 3784 flow, removed 32 selfloop flow, removed 4 redundant places. [2022-11-25 17:36:03,610 INFO L231 Difference]: Finished difference. Result has 169 places, 312 transitions, 2000 flow [2022-11-25 17:36:03,610 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=2000, PETRI_PLACES=169, PETRI_TRANSITIONS=312} [2022-11-25 17:36:03,611 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 87 predicate places. [2022-11-25 17:36:03,611 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 312 transitions, 2000 flow [2022-11-25 17:36:03,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 177.5) internal successors, (3195), 18 states have internal predecessors, (3195), 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 17:36:03,613 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:36:03,614 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:36:03,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:36:03,614 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 17:36:03,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:36:03,615 INFO L85 PathProgramCache]: Analyzing trace with hash 628204805, now seen corresponding path program 3 times [2022-11-25 17:36:03,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:36:03,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51848740] [2022-11-25 17:36:03,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:36:03,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:36:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:05,258 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 17:36:05,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:36:05,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51848740] [2022-11-25 17:36:05,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51848740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:36:05,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:36:05,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-25 17:36:05,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430300128] [2022-11-25 17:36:05,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:36:05,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-25 17:36:05,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:36:05,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-25 17:36:05,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2022-11-25 17:36:06,300 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 388 [2022-11-25 17:36:06,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 312 transitions, 2000 flow. Second operand has 21 states, 21 states have (on average 176.14285714285714) internal successors, (3699), 21 states have internal predecessors, (3699), 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 17:36:06,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:36:06,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 388 [2022-11-25 17:36:06,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:36:18,639 INFO L130 PetriNetUnfolder]: 37717/51244 cut-off events. [2022-11-25 17:36:18,639 INFO L131 PetriNetUnfolder]: For 150901/150915 co-relation queries the response was YES. [2022-11-25 17:36:18,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191287 conditions, 51244 events. 37717/51244 cut-off events. For 150901/150915 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 275961 event pairs, 7940 based on Foata normal form. 15/49291 useless extension candidates. Maximal degree in co-relation 191253. Up to 38749 conditions per place. [2022-11-25 17:36:19,106 INFO L137 encePairwiseOnDemand]: 368/388 looper letters, 670 selfloop transitions, 228 changer transitions 33/949 dead transitions. [2022-11-25 17:36:19,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 949 transitions, 7048 flow [2022-11-25 17:36:19,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-25 17:36:19,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-11-25 17:36:19,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 10218 transitions. [2022-11-25 17:36:19,135 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4788191190253046 [2022-11-25 17:36:19,135 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 10218 transitions. [2022-11-25 17:36:19,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 10218 transitions. [2022-11-25 17:36:19,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:36:19,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 10218 transitions. [2022-11-25 17:36:19,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 185.78181818181818) internal successors, (10218), 55 states have internal predecessors, (10218), 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 17:36:19,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 388.0) internal successors, (21728), 56 states have internal predecessors, (21728), 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 17:36:19,208 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 388.0) internal successors, (21728), 56 states have internal predecessors, (21728), 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 17:36:19,208 INFO L175 Difference]: Start difference. First operand has 169 places, 312 transitions, 2000 flow. Second operand 55 states and 10218 transitions. [2022-11-25 17:36:19,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 949 transitions, 7048 flow [2022-11-25 17:36:22,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 949 transitions, 6735 flow, removed 113 selfloop flow, removed 4 redundant places. [2022-11-25 17:36:22,444 INFO L231 Difference]: Finished difference. Result has 238 places, 537 transitions, 4461 flow [2022-11-25 17:36:22,444 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=1777, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=4461, PETRI_PLACES=238, PETRI_TRANSITIONS=537} [2022-11-25 17:36:22,445 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 156 predicate places. [2022-11-25 17:36:22,446 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 537 transitions, 4461 flow [2022-11-25 17:36:22,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 176.14285714285714) internal successors, (3699), 21 states have internal predecessors, (3699), 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 17:36:22,448 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:36:22,448 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:36:22,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:36:22,449 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 17:36:22,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:36:22,450 INFO L85 PathProgramCache]: Analyzing trace with hash -71063233, now seen corresponding path program 4 times [2022-11-25 17:36:22,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:36:22,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303996010] [2022-11-25 17:36:22,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:36:22,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:36:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:23,911 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 17:36:23,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:36:23,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303996010] [2022-11-25 17:36:23,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303996010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:36:23,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:36:23,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-25 17:36:23,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216966536] [2022-11-25 17:36:23,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:36:23,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-25 17:36:23,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:36:23,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-25 17:36:23,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2022-11-25 17:36:24,971 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 388 [2022-11-25 17:36:24,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 537 transitions, 4461 flow. Second operand has 19 states, 19 states have (on average 177.3684210526316) internal successors, (3370), 19 states have internal predecessors, (3370), 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 17:36:24,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:36:24,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 388 [2022-11-25 17:36:24,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:36:39,613 INFO L130 PetriNetUnfolder]: 42932/58413 cut-off events. [2022-11-25 17:36:39,613 INFO L131 PetriNetUnfolder]: For 231292/231306 co-relation queries the response was YES. [2022-11-25 17:36:40,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247177 conditions, 58413 events. 42932/58413 cut-off events. For 231292/231306 co-relation queries the response was YES. Maximal size of possible extension queue 1020. Compared 321353 event pairs, 7394 based on Foata normal form. 15/55967 useless extension candidates. Maximal degree in co-relation 247123. Up to 44990 conditions per place. [2022-11-25 17:36:40,354 INFO L137 encePairwiseOnDemand]: 370/388 looper letters, 757 selfloop transitions, 248 changer transitions 33/1056 dead transitions. [2022-11-25 17:36:40,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 1056 transitions, 9293 flow [2022-11-25 17:36:40,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-25 17:36:40,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-25 17:36:40,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 7512 transitions. [2022-11-25 17:36:40,369 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48402061855670103 [2022-11-25 17:36:40,369 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 7512 transitions. [2022-11-25 17:36:40,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 7512 transitions. [2022-11-25 17:36:40,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:36:40,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 7512 transitions. [2022-11-25 17:36:40,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 187.8) internal successors, (7512), 40 states have internal predecessors, (7512), 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 17:36:40,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 388.0) internal successors, (15908), 41 states have internal predecessors, (15908), 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 17:36:40,412 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 388.0) internal successors, (15908), 41 states have internal predecessors, (15908), 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 17:36:40,412 INFO L175 Difference]: Start difference. First operand has 238 places, 537 transitions, 4461 flow. Second operand 40 states and 7512 transitions. [2022-11-25 17:36:40,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 1056 transitions, 9293 flow