./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df65a29-4ec2-4181-b379-07a0da62bed7/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df65a29-4ec2-4181-b379-07a0da62bed7/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_5df65a29-4ec2-4181-b379-07a0da62bed7/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df65a29-4ec2-4181-b379-07a0da62bed7/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df65a29-4ec2-4181-b379-07a0da62bed7/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_5df65a29-4ec2-4181-b379-07a0da62bed7/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 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d --- 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 18:14:14,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:14:14,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:14:14,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:14:14,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:14:14,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:14:14,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:14:14,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:14:14,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:14:14,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:14:14,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:14:14,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:14:14,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:14:14,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:14:14,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:14:14,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:14:14,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:14:14,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:14:14,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:14:14,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:14:14,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:14:14,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:14:14,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:14:14,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:14:14,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:14:14,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:14:14,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:14:14,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:14:14,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:14:14,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:14:14,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:14:14,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:14:14,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:14:14,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:14:14,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:14:14,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:14:14,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:14:14,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:14:14,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:14:14,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:14:14,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:14:14,280 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df65a29-4ec2-4181-b379-07a0da62bed7/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 18:14:14,333 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:14:14,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:14:14,335 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:14:14,335 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:14:14,336 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:14:14,337 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:14:14,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:14:14,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:14:14,339 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:14:14,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:14:14,341 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:14:14,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:14:14,342 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:14:14,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:14:14,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:14:14,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:14:14,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:14:14,343 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:14:14,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:14:14,344 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:14:14,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:14:14,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:14:14,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:14:14,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:14:14,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:14:14,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:14:14,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:14:14,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:14:14,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:14:14,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:14:14,349 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:14:14,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:14:14,350 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:14:14,350 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:14:14,351 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_5df65a29-4ec2-4181-b379-07a0da62bed7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df65a29-4ec2-4181-b379-07a0da62bed7/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d [2022-11-25 18:14:14,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:14:14,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:14:14,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:14:14,775 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:14:14,776 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:14:14,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df65a29-4ec2-4181-b379-07a0da62bed7/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2022-11-25 18:14:18,723 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:14:19,033 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:14:19,033 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df65a29-4ec2-4181-b379-07a0da62bed7/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2022-11-25 18:14:19,045 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df65a29-4ec2-4181-b379-07a0da62bed7/bin/uautomizer-ZsLfNo2U6R/data/1262d59d5/e806badf26a54f6bae1309f120846680/FLAG0e56de13a [2022-11-25 18:14:19,070 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df65a29-4ec2-4181-b379-07a0da62bed7/bin/uautomizer-ZsLfNo2U6R/data/1262d59d5/e806badf26a54f6bae1309f120846680 [2022-11-25 18:14:19,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:14:19,077 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:14:19,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:14:19,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:14:19,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:14:19,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:14:19" (1/1) ... [2022-11-25 18:14:19,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@561c9120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:19, skipping insertion in model container [2022-11-25 18:14:19,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:14:19" (1/1) ... [2022-11-25 18:14:19,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:14:19,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:14:19,418 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,421 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,422 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,425 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,427 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,429 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,430 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,431 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,433 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,434 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,438 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,439 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,440 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,441 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,442 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,446 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,447 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,448 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,450 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,451 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,451 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,453 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,453 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,477 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,477 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,477 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,478 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,478 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,491 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_5df65a29-4ec2-4181-b379-07a0da62bed7/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3526,3539] [2022-11-25 18:14:19,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:14:19,529 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:14:19,559 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,560 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,560 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,564 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,565 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,566 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,567 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,569 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,570 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,570 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,571 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,572 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,573 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,573 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,574 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,578 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,578 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,579 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,579 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,580 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,580 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,581 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,582 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,582 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,583 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,583 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,583 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,584 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,585 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:14:19,585 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:14:19,593 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_5df65a29-4ec2-4181-b379-07a0da62bed7/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3526,3539] [2022-11-25 18:14:19,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:14:19,613 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:14:19,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:19 WrapperNode [2022-11-25 18:14:19,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:14:19,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:14:19,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:14:19,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:14:19,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:19" (1/1) ... [2022-11-25 18:14:19,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:19" (1/1) ... [2022-11-25 18:14:19,664 INFO L138 Inliner]: procedures = 23, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 198 [2022-11-25 18:14:19,665 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:14:19,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:14:19,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:14:19,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:14:19,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:19" (1/1) ... [2022-11-25 18:14:19,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:19" (1/1) ... [2022-11-25 18:14:19,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:19" (1/1) ... [2022-11-25 18:14:19,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:19" (1/1) ... [2022-11-25 18:14:19,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:19" (1/1) ... [2022-11-25 18:14:19,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:19" (1/1) ... [2022-11-25 18:14:19,693 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:19" (1/1) ... [2022-11-25 18:14:19,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:19" (1/1) ... [2022-11-25 18:14:19,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:14:19,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:14:19,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:14:19,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:14:19,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:19" (1/1) ... [2022-11-25 18:14:19,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:14:19,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df65a29-4ec2-4181-b379-07a0da62bed7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:14:19,762 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df65a29-4ec2-4181-b379-07a0da62bed7/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:14:19,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df65a29-4ec2-4181-b379-07a0da62bed7/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:14:19,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:14:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 18:14:19,805 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 18:14:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 18:14:19,805 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 18:14:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 18:14:19,806 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 18:14:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-25 18:14:19,806 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-25 18:14:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:14:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:14:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:14:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 18:14:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 18:14:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:14:19,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:14:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:14:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:14:19,814 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 18:14:19,949 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:14:19,952 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:14:20,430 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:14:20,624 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:14:20,624 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 18:14:20,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:14:20 BoogieIcfgContainer [2022-11-25 18:14:20,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:14:20,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:14:20,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:14:20,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:14:20,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:14:19" (1/3) ... [2022-11-25 18:14:20,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c069664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:14:20, skipping insertion in model container [2022-11-25 18:14:20,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:19" (2/3) ... [2022-11-25 18:14:20,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c069664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:14:20, skipping insertion in model container [2022-11-25 18:14:20,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:14:20" (3/3) ... [2022-11-25 18:14:20,658 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2022-11-25 18:14:20,670 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 18:14:20,685 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:14:20,686 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 18:14:20,686 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:14:20,814 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-25 18:14:20,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 142 transitions, 316 flow [2022-11-25 18:14:20,990 INFO L130 PetriNetUnfolder]: 2/138 cut-off events. [2022-11-25 18:14:20,990 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 18:14:20,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 138 events. 2/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-11-25 18:14:20,996 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 142 transitions, 316 flow [2022-11-25 18:14:21,001 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 125 transitions, 274 flow [2022-11-25 18:14:21,021 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:14:21,050 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 125 transitions, 274 flow [2022-11-25 18:14:21,056 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 125 transitions, 274 flow [2022-11-25 18:14:21,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 125 transitions, 274 flow [2022-11-25 18:14:21,152 INFO L130 PetriNetUnfolder]: 2/125 cut-off events. [2022-11-25 18:14:21,153 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 18:14:21,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 125 events. 2/125 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-11-25 18:14:21,155 INFO L119 LiptonReduction]: Number of co-enabled transitions 1302 [2022-11-25 18:14:28,986 INFO L134 LiptonReduction]: Checked pairs total: 3301 [2022-11-25 18:14:28,986 INFO L136 LiptonReduction]: Total number of compositions: 112 [2022-11-25 18:14:29,005 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:14:29,013 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;@14dae59d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:14:29,013 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-25 18:14:29,024 INFO L130 PetriNetUnfolder]: 0/25 cut-off events. [2022-11-25 18:14:29,025 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 18:14:29,025 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:29,026 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] [2022-11-25 18:14:29,027 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:14:29,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:29,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1344459281, now seen corresponding path program 1 times [2022-11-25 18:14:29,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:14:29,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280234074] [2022-11-25 18:14:29,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:29,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:14:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:30,559 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 18:14:30,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:14:30,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280234074] [2022-11-25 18:14:30,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280234074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:30,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:30,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:14:30,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073556171] [2022-11-25 18:14:30,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:30,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:14:30,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:14:30,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:14:30,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:14:30,691 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 254 [2022-11-25 18:14:30,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 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 18:14:30,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:14:30,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 254 [2022-11-25 18:14:30,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:14:31,241 INFO L130 PetriNetUnfolder]: 1186/1863 cut-off events. [2022-11-25 18:14:31,241 INFO L131 PetriNetUnfolder]: For 225/225 co-relation queries the response was YES. [2022-11-25 18:14:31,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3978 conditions, 1863 events. 1186/1863 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8395 event pairs, 344 based on Foata normal form. 2/1865 useless extension candidates. Maximal degree in co-relation 3017. Up to 702 conditions per place. [2022-11-25 18:14:31,256 INFO L137 encePairwiseOnDemand]: 247/254 looper letters, 54 selfloop transitions, 9 changer transitions 15/78 dead transitions. [2022-11-25 18:14:31,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 78 transitions, 381 flow [2022-11-25 18:14:31,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:14:31,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:14:31,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 630 transitions. [2022-11-25 18:14:31,277 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49606299212598426 [2022-11-25 18:14:31,278 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 630 transitions. [2022-11-25 18:14:31,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 630 transitions. [2022-11-25 18:14:31,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:14:31,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 630 transitions. [2022-11-25 18:14:31,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.0) internal successors, (630), 5 states have internal predecessors, (630), 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 18:14:31,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 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 18:14:31,300 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 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 18:14:31,303 INFO L175 Difference]: Start difference. First operand has 39 places, 26 transitions, 76 flow. Second operand 5 states and 630 transitions. [2022-11-25 18:14:31,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 78 transitions, 381 flow [2022-11-25 18:14:31,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 78 transitions, 335 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-25 18:14:31,316 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 124 flow [2022-11-25 18:14:31,318 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2022-11-25 18:14:31,323 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -1 predicate places. [2022-11-25 18:14:31,323 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 124 flow [2022-11-25 18:14:31,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 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 18:14:31,324 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:31,325 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] [2022-11-25 18:14:31,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:14:31,325 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:14:31,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:31,326 INFO L85 PathProgramCache]: Analyzing trace with hash 332059657, now seen corresponding path program 2 times [2022-11-25 18:14:31,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:14:31,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545878743] [2022-11-25 18:14:31,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:31,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:14:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:31,748 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 18:14:31,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:14:31,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545878743] [2022-11-25 18:14:31,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545878743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:31,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:31,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:14:31,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541192247] [2022-11-25 18:14:31,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:31,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:14:31,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:14:31,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:14:31,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:14:31,794 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 254 [2022-11-25 18:14:31,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 124 flow. Second operand has 6 states, 6 states have (on average 116.33333333333333) internal successors, (698), 6 states have internal predecessors, (698), 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 18:14:31,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:14:31,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 254 [2022-11-25 18:14:31,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:14:32,176 INFO L130 PetriNetUnfolder]: 816/1265 cut-off events. [2022-11-25 18:14:32,177 INFO L131 PetriNetUnfolder]: For 686/686 co-relation queries the response was YES. [2022-11-25 18:14:32,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3565 conditions, 1265 events. 816/1265 cut-off events. For 686/686 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5157 event pairs, 170 based on Foata normal form. 28/1293 useless extension candidates. Maximal degree in co-relation 2087. Up to 1107 conditions per place. [2022-11-25 18:14:32,190 INFO L137 encePairwiseOnDemand]: 246/254 looper letters, 55 selfloop transitions, 14 changer transitions 0/69 dead transitions. [2022-11-25 18:14:32,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 69 transitions, 377 flow [2022-11-25 18:14:32,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:14:32,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:14:32,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 619 transitions. [2022-11-25 18:14:32,198 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4874015748031496 [2022-11-25 18:14:32,199 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 619 transitions. [2022-11-25 18:14:32,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 619 transitions. [2022-11-25 18:14:32,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:14:32,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 619 transitions. [2022-11-25 18:14:32,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.8) internal successors, (619), 5 states have internal predecessors, (619), 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 18:14:32,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 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 18:14:32,209 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 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 18:14:32,209 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 124 flow. Second operand 5 states and 619 transitions. [2022-11-25 18:14:32,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 69 transitions, 377 flow [2022-11-25 18:14:32,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 69 transitions, 357 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-25 18:14:32,217 INFO L231 Difference]: Finished difference. Result has 42 places, 46 transitions, 216 flow [2022-11-25 18:14:32,217 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=42, PETRI_TRANSITIONS=46} [2022-11-25 18:14:32,219 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2022-11-25 18:14:32,219 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 46 transitions, 216 flow [2022-11-25 18:14:32,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.33333333333333) internal successors, (698), 6 states have internal predecessors, (698), 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 18:14:32,220 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:32,221 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] [2022-11-25 18:14:32,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:14:32,221 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:14:32,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:32,226 INFO L85 PathProgramCache]: Analyzing trace with hash -732334297, now seen corresponding path program 3 times [2022-11-25 18:14:32,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:14:32,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305087473] [2022-11-25 18:14:32,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:32,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:14:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:32,639 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 18:14:32,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:14:32,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305087473] [2022-11-25 18:14:32,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305087473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:32,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:32,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:14:32,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431717748] [2022-11-25 18:14:32,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:32,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:14:32,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:14:32,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:14:32,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:14:32,687 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 254 [2022-11-25 18:14:32,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 46 transitions, 216 flow. Second operand has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 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 18:14:32,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:14:32,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 254 [2022-11-25 18:14:32,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:14:33,420 INFO L130 PetriNetUnfolder]: 1398/2197 cut-off events. [2022-11-25 18:14:33,420 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2022-11-25 18:14:33,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7082 conditions, 2197 events. 1398/2197 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 10647 event pairs, 147 based on Foata normal form. 38/2235 useless extension candidates. Maximal degree in co-relation 3430. Up to 962 conditions per place. [2022-11-25 18:14:33,439 INFO L137 encePairwiseOnDemand]: 245/254 looper letters, 85 selfloop transitions, 53 changer transitions 0/138 dead transitions. [2022-11-25 18:14:33,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 138 transitions, 870 flow [2022-11-25 18:14:33,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:14:33,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 18:14:33,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1109 transitions. [2022-11-25 18:14:33,444 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48512685914260717 [2022-11-25 18:14:33,444 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1109 transitions. [2022-11-25 18:14:33,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1109 transitions. [2022-11-25 18:14:33,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:14:33,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1109 transitions. [2022-11-25 18:14:33,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 123.22222222222223) internal successors, (1109), 9 states have internal predecessors, (1109), 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 18:14:33,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 254.0) internal successors, (2540), 10 states have internal predecessors, (2540), 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 18:14:33,456 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 254.0) internal successors, (2540), 10 states have internal predecessors, (2540), 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 18:14:33,456 INFO L175 Difference]: Start difference. First operand has 42 places, 46 transitions, 216 flow. Second operand 9 states and 1109 transitions. [2022-11-25 18:14:33,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 138 transitions, 870 flow [2022-11-25 18:14:33,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 138 transitions, 870 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:14:33,464 INFO L231 Difference]: Finished difference. Result has 52 places, 83 transitions, 606 flow [2022-11-25 18:14:33,464 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=606, PETRI_PLACES=52, PETRI_TRANSITIONS=83} [2022-11-25 18:14:33,465 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2022-11-25 18:14:33,466 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 83 transitions, 606 flow [2022-11-25 18:14:33,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 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 18:14:33,467 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:33,467 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] [2022-11-25 18:14:33,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:14:33,468 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:14:33,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:33,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1681349655, now seen corresponding path program 4 times [2022-11-25 18:14:33,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:14:33,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139495569] [2022-11-25 18:14:33,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:33,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:14:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:33,760 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 18:14:33,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:14:33,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139495569] [2022-11-25 18:14:33,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139495569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:33,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:33,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:14:33,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376442374] [2022-11-25 18:14:33,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:33,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:14:33,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:14:33,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:14:33,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:14:33,794 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 254 [2022-11-25 18:14:33,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 83 transitions, 606 flow. Second operand has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 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 18:14:33,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:14:33,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 254 [2022-11-25 18:14:33,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:14:34,588 INFO L130 PetriNetUnfolder]: 1449/2294 cut-off events. [2022-11-25 18:14:34,589 INFO L131 PetriNetUnfolder]: For 4250/4250 co-relation queries the response was YES. [2022-11-25 18:14:34,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9542 conditions, 2294 events. 1449/2294 cut-off events. For 4250/4250 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 11446 event pairs, 154 based on Foata normal form. 54/2348 useless extension candidates. Maximal degree in co-relation 5010. Up to 962 conditions per place. [2022-11-25 18:14:34,613 INFO L137 encePairwiseOnDemand]: 245/254 looper letters, 84 selfloop transitions, 65 changer transitions 6/155 dead transitions. [2022-11-25 18:14:34,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 155 transitions, 1240 flow [2022-11-25 18:14:34,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:14:34,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 18:14:34,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1113 transitions. [2022-11-25 18:14:34,618 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4868766404199475 [2022-11-25 18:14:34,618 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1113 transitions. [2022-11-25 18:14:34,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1113 transitions. [2022-11-25 18:14:34,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:14:34,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1113 transitions. [2022-11-25 18:14:34,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 123.66666666666667) internal successors, (1113), 9 states have internal predecessors, (1113), 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 18:14:34,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 254.0) internal successors, (2540), 10 states have internal predecessors, (2540), 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 18:14:34,629 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 254.0) internal successors, (2540), 10 states have internal predecessors, (2540), 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 18:14:34,629 INFO L175 Difference]: Start difference. First operand has 52 places, 83 transitions, 606 flow. Second operand 9 states and 1113 transitions. [2022-11-25 18:14:34,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 155 transitions, 1240 flow [2022-11-25 18:14:34,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 155 transitions, 1176 flow, removed 24 selfloop flow, removed 2 redundant places. [2022-11-25 18:14:34,662 INFO L231 Difference]: Finished difference. Result has 58 places, 97 transitions, 806 flow [2022-11-25 18:14:34,663 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=806, PETRI_PLACES=58, PETRI_TRANSITIONS=97} [2022-11-25 18:14:34,664 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 19 predicate places. [2022-11-25 18:14:34,664 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 97 transitions, 806 flow [2022-11-25 18:14:34,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 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 18:14:34,665 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:34,665 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] [2022-11-25 18:14:34,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:14:34,665 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:14:34,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:34,666 INFO L85 PathProgramCache]: Analyzing trace with hash -142922981, now seen corresponding path program 5 times [2022-11-25 18:14:34,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:14:34,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243435] [2022-11-25 18:14:34,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:34,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:14:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:35,146 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 18:14:35,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:14:35,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243435] [2022-11-25 18:14:35,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:35,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:35,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:14:35,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638598791] [2022-11-25 18:14:35,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:35,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:14:35,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:14:35,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:14:35,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:14:35,204 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 254 [2022-11-25 18:14:35,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 97 transitions, 806 flow. Second operand has 7 states, 7 states have (on average 111.71428571428571) internal successors, (782), 7 states have internal predecessors, (782), 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 18:14:35,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:14:35,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 254 [2022-11-25 18:14:35,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:14:35,833 INFO L130 PetriNetUnfolder]: 1443/2290 cut-off events. [2022-11-25 18:14:35,833 INFO L131 PetriNetUnfolder]: For 4988/4988 co-relation queries the response was YES. [2022-11-25 18:14:35,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9989 conditions, 2290 events. 1443/2290 cut-off events. For 4988/4988 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 11312 event pairs, 240 based on Foata normal form. 54/2344 useless extension candidates. Maximal degree in co-relation 5549. Up to 1887 conditions per place. [2022-11-25 18:14:35,858 INFO L137 encePairwiseOnDemand]: 246/254 looper letters, 95 selfloop transitions, 41 changer transitions 4/140 dead transitions. [2022-11-25 18:14:35,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 140 transitions, 1279 flow [2022-11-25 18:14:35,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:14:35,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:14:35,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 834 transitions. [2022-11-25 18:14:35,863 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46906636670416196 [2022-11-25 18:14:35,863 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 834 transitions. [2022-11-25 18:14:35,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 834 transitions. [2022-11-25 18:14:35,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:14:35,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 834 transitions. [2022-11-25 18:14:35,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 119.14285714285714) internal successors, (834), 7 states have internal predecessors, (834), 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 18:14:35,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 254.0) internal successors, (2032), 8 states have internal predecessors, (2032), 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 18:14:35,871 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 254.0) internal successors, (2032), 8 states have internal predecessors, (2032), 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 18:14:35,871 INFO L175 Difference]: Start difference. First operand has 58 places, 97 transitions, 806 flow. Second operand 7 states and 834 transitions. [2022-11-25 18:14:35,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 140 transitions, 1279 flow [2022-11-25 18:14:35,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 140 transitions, 1195 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-25 18:14:35,886 INFO L231 Difference]: Finished difference. Result has 63 places, 102 transitions, 906 flow [2022-11-25 18:14:35,886 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=906, PETRI_PLACES=63, PETRI_TRANSITIONS=102} [2022-11-25 18:14:35,887 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 24 predicate places. [2022-11-25 18:14:35,887 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 102 transitions, 906 flow [2022-11-25 18:14:35,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 111.71428571428571) internal successors, (782), 7 states have internal predecessors, (782), 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 18:14:35,888 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:35,888 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] [2022-11-25 18:14:35,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:14:35,889 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:14:35,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:35,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1538573581, now seen corresponding path program 6 times [2022-11-25 18:14:35,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:14:35,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73130586] [2022-11-25 18:14:35,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:35,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:14:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:36,163 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 18:14:36,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:14:36,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73130586] [2022-11-25 18:14:36,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73130586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:36,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:36,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:14:36,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263852488] [2022-11-25 18:14:36,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:36,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:14:36,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:14:36,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:14:36,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:14:36,199 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 254 [2022-11-25 18:14:36,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 102 transitions, 906 flow. Second operand has 6 states, 6 states have (on average 115.33333333333333) internal successors, (692), 6 states have internal predecessors, (692), 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 18:14:36,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:14:36,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 254 [2022-11-25 18:14:36,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:14:36,749 INFO L130 PetriNetUnfolder]: 1403/2238 cut-off events. [2022-11-25 18:14:36,749 INFO L131 PetriNetUnfolder]: For 5006/5006 co-relation queries the response was YES. [2022-11-25 18:14:36,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9828 conditions, 2238 events. 1403/2238 cut-off events. For 5006/5006 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 11063 event pairs, 250 based on Foata normal form. 40/2278 useless extension candidates. Maximal degree in co-relation 9553. Up to 1871 conditions per place. [2022-11-25 18:14:36,774 INFO L137 encePairwiseOnDemand]: 246/254 looper letters, 80 selfloop transitions, 37 changer transitions 14/131 dead transitions. [2022-11-25 18:14:36,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 131 transitions, 1264 flow [2022-11-25 18:14:36,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:14:36,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:14:36,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 847 transitions. [2022-11-25 18:14:36,778 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4763779527559055 [2022-11-25 18:14:36,778 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 847 transitions. [2022-11-25 18:14:36,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 847 transitions. [2022-11-25 18:14:36,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:14:36,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 847 transitions. [2022-11-25 18:14:36,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 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 18:14:36,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 254.0) internal successors, (2032), 8 states have internal predecessors, (2032), 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 18:14:36,786 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 254.0) internal successors, (2032), 8 states have internal predecessors, (2032), 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 18:14:36,786 INFO L175 Difference]: Start difference. First operand has 63 places, 102 transitions, 906 flow. Second operand 7 states and 847 transitions. [2022-11-25 18:14:36,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 131 transitions, 1264 flow [2022-11-25 18:14:36,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 131 transitions, 1255 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-25 18:14:36,797 INFO L231 Difference]: Finished difference. Result has 67 places, 98 transitions, 956 flow [2022-11-25 18:14:36,798 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=956, PETRI_PLACES=67, PETRI_TRANSITIONS=98} [2022-11-25 18:14:36,799 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 28 predicate places. [2022-11-25 18:14:36,799 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 98 transitions, 956 flow [2022-11-25 18:14:36,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.33333333333333) internal successors, (692), 6 states have internal predecessors, (692), 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 18:14:36,800 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:36,800 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] [2022-11-25 18:14:36,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:14:36,801 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:14:36,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:36,801 INFO L85 PathProgramCache]: Analyzing trace with hash -112264863, now seen corresponding path program 7 times [2022-11-25 18:14:36,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:14:36,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145496891] [2022-11-25 18:14:36,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:36,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:14:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:37,122 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 18:14:37,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:14:37,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145496891] [2022-11-25 18:14:37,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145496891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:37,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:37,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:14:37,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638640552] [2022-11-25 18:14:37,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:37,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:14:37,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:14:37,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:14:37,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:14:37,144 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 254 [2022-11-25 18:14:37,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 98 transitions, 956 flow. Second operand has 5 states, 5 states have (on average 116.2) internal successors, (581), 5 states have internal predecessors, (581), 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 18:14:37,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:14:37,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 254 [2022-11-25 18:14:37,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:14:37,624 INFO L130 PetriNetUnfolder]: 1236/1969 cut-off events. [2022-11-25 18:14:37,624 INFO L131 PetriNetUnfolder]: For 4682/4682 co-relation queries the response was YES. [2022-11-25 18:14:37,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9040 conditions, 1969 events. 1236/1969 cut-off events. For 4682/4682 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 9504 event pairs, 214 based on Foata normal form. 24/1993 useless extension candidates. Maximal degree in co-relation 9025. Up to 1888 conditions per place. [2022-11-25 18:14:37,658 INFO L137 encePairwiseOnDemand]: 247/254 looper letters, 108 selfloop transitions, 19 changer transitions 0/127 dead transitions. [2022-11-25 18:14:37,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 127 transitions, 1410 flow [2022-11-25 18:14:37,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:14:37,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:14:37,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 607 transitions. [2022-11-25 18:14:37,661 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4779527559055118 [2022-11-25 18:14:37,662 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 607 transitions. [2022-11-25 18:14:37,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 607 transitions. [2022-11-25 18:14:37,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:14:37,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 607 transitions. [2022-11-25 18:14:37,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.4) internal successors, (607), 5 states have internal predecessors, (607), 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 18:14:37,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 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 18:14:37,669 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 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 18:14:37,669 INFO L175 Difference]: Start difference. First operand has 67 places, 98 transitions, 956 flow. Second operand 5 states and 607 transitions. [2022-11-25 18:14:37,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 127 transitions, 1410 flow [2022-11-25 18:14:37,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 127 transitions, 1368 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:14:37,686 INFO L231 Difference]: Finished difference. Result has 62 places, 106 transitions, 1089 flow [2022-11-25 18:14:37,687 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1089, PETRI_PLACES=62, PETRI_TRANSITIONS=106} [2022-11-25 18:14:37,687 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 23 predicate places. [2022-11-25 18:14:37,688 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 106 transitions, 1089 flow [2022-11-25 18:14:37,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.2) internal successors, (581), 5 states have internal predecessors, (581), 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 18:14:37,688 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:37,689 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] [2022-11-25 18:14:37,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:14:37,689 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:14:37,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:37,690 INFO L85 PathProgramCache]: Analyzing trace with hash 952467699, now seen corresponding path program 8 times [2022-11-25 18:14:37,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:14:37,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848418360] [2022-11-25 18:14:37,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:37,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:14:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:38,042 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 18:14:38,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:14:38,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848418360] [2022-11-25 18:14:38,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848418360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:38,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:38,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:14:38,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173320172] [2022-11-25 18:14:38,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:38,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:14:38,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:14:38,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:14:38,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:14:38,081 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 254 [2022-11-25 18:14:38,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 106 transitions, 1089 flow. Second operand has 8 states, 8 states have (on average 114.25) internal successors, (914), 8 states have internal predecessors, (914), 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 18:14:38,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:14:38,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 254 [2022-11-25 18:14:38,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:14:38,830 INFO L130 PetriNetUnfolder]: 1436/2363 cut-off events. [2022-11-25 18:14:38,889 INFO L131 PetriNetUnfolder]: For 5362/5362 co-relation queries the response was YES. [2022-11-25 18:14:38,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10487 conditions, 2363 events. 1436/2363 cut-off events. For 5362/5362 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 12406 event pairs, 56 based on Foata normal form. 8/2371 useless extension candidates. Maximal degree in co-relation 10470. Up to 898 conditions per place. [2022-11-25 18:14:38,915 INFO L137 encePairwiseOnDemand]: 245/254 looper letters, 84 selfloop transitions, 111 changer transitions 2/197 dead transitions. [2022-11-25 18:14:38,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 197 transitions, 1919 flow [2022-11-25 18:14:38,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 18:14:38,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 18:14:38,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1228 transitions. [2022-11-25 18:14:38,921 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48346456692913387 [2022-11-25 18:14:38,921 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1228 transitions. [2022-11-25 18:14:38,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1228 transitions. [2022-11-25 18:14:38,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:14:38,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1228 transitions. [2022-11-25 18:14:38,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 122.8) internal successors, (1228), 10 states have internal predecessors, (1228), 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 18:14:38,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 254.0) internal successors, (2794), 11 states have internal predecessors, (2794), 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 18:14:38,934 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 254.0) internal successors, (2794), 11 states have internal predecessors, (2794), 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 18:14:38,935 INFO L175 Difference]: Start difference. First operand has 62 places, 106 transitions, 1089 flow. Second operand 10 states and 1228 transitions. [2022-11-25 18:14:38,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 197 transitions, 1919 flow [2022-11-25 18:14:38,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 197 transitions, 1915 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:14:38,961 INFO L231 Difference]: Finished difference. Result has 72 places, 140 transitions, 1683 flow [2022-11-25 18:14:38,962 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1683, PETRI_PLACES=72, PETRI_TRANSITIONS=140} [2022-11-25 18:14:38,965 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 33 predicate places. [2022-11-25 18:14:38,965 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 140 transitions, 1683 flow [2022-11-25 18:14:38,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 114.25) internal successors, (914), 8 states have internal predecessors, (914), 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 18:14:38,966 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:38,967 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] [2022-11-25 18:14:38,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:14:38,967 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:14:38,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:38,974 INFO L85 PathProgramCache]: Analyzing trace with hash 598542293, now seen corresponding path program 9 times [2022-11-25 18:14:38,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:14:38,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606569824] [2022-11-25 18:14:38,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:38,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:14:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:39,281 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 18:14:39,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:14:39,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606569824] [2022-11-25 18:14:39,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606569824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:39,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:39,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:14:39,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420426484] [2022-11-25 18:14:39,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:39,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:14:39,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:14:39,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:14:39,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:14:39,317 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 254 [2022-11-25 18:14:39,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 140 transitions, 1683 flow. Second operand has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 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 18:14:39,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:14:39,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 254 [2022-11-25 18:14:39,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:14:40,059 INFO L130 PetriNetUnfolder]: 1565/2628 cut-off events. [2022-11-25 18:14:40,059 INFO L131 PetriNetUnfolder]: For 10966/10966 co-relation queries the response was YES. [2022-11-25 18:14:40,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14179 conditions, 2628 events. 1565/2628 cut-off events. For 10966/10966 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 14545 event pairs, 110 based on Foata normal form. 24/2652 useless extension candidates. Maximal degree in co-relation 14159. Up to 1007 conditions per place. [2022-11-25 18:14:40,088 INFO L137 encePairwiseOnDemand]: 245/254 looper letters, 105 selfloop transitions, 109 changer transitions 1/215 dead transitions. [2022-11-25 18:14:40,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 215 transitions, 2649 flow [2022-11-25 18:14:40,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 18:14:40,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 18:14:40,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 978 transitions. [2022-11-25 18:14:40,094 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4812992125984252 [2022-11-25 18:14:40,094 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 978 transitions. [2022-11-25 18:14:40,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 978 transitions. [2022-11-25 18:14:40,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:14:40,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 978 transitions. [2022-11-25 18:14:40,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 122.25) internal successors, (978), 8 states have internal predecessors, (978), 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 18:14:40,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 254.0) internal successors, (2286), 9 states have internal predecessors, (2286), 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 18:14:40,103 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 254.0) internal successors, (2286), 9 states have internal predecessors, (2286), 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 18:14:40,103 INFO L175 Difference]: Start difference. First operand has 72 places, 140 transitions, 1683 flow. Second operand 8 states and 978 transitions. [2022-11-25 18:14:40,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 215 transitions, 2649 flow [2022-11-25 18:14:40,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 215 transitions, 2513 flow, removed 58 selfloop flow, removed 2 redundant places. [2022-11-25 18:14:40,154 INFO L231 Difference]: Finished difference. Result has 80 places, 171 transitions, 2317 flow [2022-11-25 18:14:40,155 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=1593, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2317, PETRI_PLACES=80, PETRI_TRANSITIONS=171} [2022-11-25 18:14:40,156 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 41 predicate places. [2022-11-25 18:14:40,156 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 171 transitions, 2317 flow [2022-11-25 18:14:40,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 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 18:14:40,159 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:40,159 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] [2022-11-25 18:14:40,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:14:40,161 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:14:40,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:40,162 INFO L85 PathProgramCache]: Analyzing trace with hash -2040070501, now seen corresponding path program 10 times [2022-11-25 18:14:40,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:14:40,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763082862] [2022-11-25 18:14:40,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:40,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:14:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:40,485 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 18:14:40,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:14:40,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763082862] [2022-11-25 18:14:40,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763082862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:40,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:40,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:14:40,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616601609] [2022-11-25 18:14:40,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:40,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:14:40,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:14:40,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:14:40,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:14:40,520 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 254 [2022-11-25 18:14:40,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 171 transitions, 2317 flow. Second operand has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 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 18:14:40,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:14:40,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 254 [2022-11-25 18:14:40,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:14:41,381 INFO L130 PetriNetUnfolder]: 1576/2669 cut-off events. [2022-11-25 18:14:41,382 INFO L131 PetriNetUnfolder]: For 15563/15563 co-relation queries the response was YES. [2022-11-25 18:14:41,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15930 conditions, 2669 events. 1576/2669 cut-off events. For 15563/15563 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 15069 event pairs, 112 based on Foata normal form. 36/2705 useless extension candidates. Maximal degree in co-relation 15907. Up to 1007 conditions per place. [2022-11-25 18:14:41,456 INFO L137 encePairwiseOnDemand]: 245/254 looper letters, 104 selfloop transitions, 113 changer transitions 6/223 dead transitions. [2022-11-25 18:14:41,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 223 transitions, 3049 flow [2022-11-25 18:14:41,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 18:14:41,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 18:14:41,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 982 transitions. [2022-11-25 18:14:41,460 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48326771653543305 [2022-11-25 18:14:41,460 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 982 transitions. [2022-11-25 18:14:41,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 982 transitions. [2022-11-25 18:14:41,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:14:41,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 982 transitions. [2022-11-25 18:14:41,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 122.75) internal successors, (982), 8 states have internal predecessors, (982), 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 18:14:41,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 254.0) internal successors, (2286), 9 states have internal predecessors, (2286), 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 18:14:41,470 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 254.0) internal successors, (2286), 9 states have internal predecessors, (2286), 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 18:14:41,470 INFO L175 Difference]: Start difference. First operand has 80 places, 171 transitions, 2317 flow. Second operand 8 states and 982 transitions. [2022-11-25 18:14:41,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 223 transitions, 3049 flow [2022-11-25 18:14:41,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 223 transitions, 3035 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-11-25 18:14:41,537 INFO L231 Difference]: Finished difference. Result has 87 places, 178 transitions, 2687 flow [2022-11-25 18:14:41,539 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=2303, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2687, PETRI_PLACES=87, PETRI_TRANSITIONS=178} [2022-11-25 18:14:41,540 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 48 predicate places. [2022-11-25 18:14:41,540 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 178 transitions, 2687 flow [2022-11-25 18:14:41,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 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 18:14:41,541 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:41,541 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] [2022-11-25 18:14:41,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 18:14:41,541 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:14:41,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:41,542 INFO L85 PathProgramCache]: Analyzing trace with hash -865289391, now seen corresponding path program 11 times [2022-11-25 18:14:41,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:14:41,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437127328] [2022-11-25 18:14:41,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:41,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:14:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:41,827 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 18:14:41,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:14:41,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437127328] [2022-11-25 18:14:41,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437127328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:41,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:41,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:14:41,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429546812] [2022-11-25 18:14:41,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:41,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:14:41,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:14:41,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:14:41,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:14:41,864 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 254 [2022-11-25 18:14:41,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 178 transitions, 2687 flow. Second operand has 8 states, 8 states have (on average 114.25) internal successors, (914), 8 states have internal predecessors, (914), 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 18:14:41,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:14:41,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 254 [2022-11-25 18:14:41,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:14:42,901 INFO L130 PetriNetUnfolder]: 1591/2700 cut-off events. [2022-11-25 18:14:42,901 INFO L131 PetriNetUnfolder]: For 16885/16885 co-relation queries the response was YES. [2022-11-25 18:14:42,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17533 conditions, 2700 events. 1591/2700 cut-off events. For 16885/16885 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 15357 event pairs, 60 based on Foata normal form. 36/2736 useless extension candidates. Maximal degree in co-relation 17508. Up to 1051 conditions per place. [2022-11-25 18:14:42,939 INFO L137 encePairwiseOnDemand]: 244/254 looper letters, 89 selfloop transitions, 161 changer transitions 2/252 dead transitions. [2022-11-25 18:14:42,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 252 transitions, 3745 flow [2022-11-25 18:14:42,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 18:14:42,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 18:14:42,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1232 transitions. [2022-11-25 18:14:42,945 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48503937007874015 [2022-11-25 18:14:42,945 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1232 transitions. [2022-11-25 18:14:42,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1232 transitions. [2022-11-25 18:14:42,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:14:42,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1232 transitions. [2022-11-25 18:14:42,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 123.2) internal successors, (1232), 10 states have internal predecessors, (1232), 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 18:14:42,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 254.0) internal successors, (2794), 11 states have internal predecessors, (2794), 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 18:14:42,958 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 254.0) internal successors, (2794), 11 states have internal predecessors, (2794), 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 18:14:42,958 INFO L175 Difference]: Start difference. First operand has 87 places, 178 transitions, 2687 flow. Second operand 10 states and 1232 transitions. [2022-11-25 18:14:42,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 252 transitions, 3745 flow [2022-11-25 18:14:43,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 252 transitions, 3606 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-25 18:14:43,046 INFO L231 Difference]: Finished difference. Result has 94 places, 194 transitions, 3230 flow [2022-11-25 18:14:43,047 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=2459, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3230, PETRI_PLACES=94, PETRI_TRANSITIONS=194} [2022-11-25 18:14:43,047 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 55 predicate places. [2022-11-25 18:14:43,048 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 194 transitions, 3230 flow [2022-11-25 18:14:43,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 114.25) internal successors, (914), 8 states have internal predecessors, (914), 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 18:14:43,049 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:43,049 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] [2022-11-25 18:14:43,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 18:14:43,050 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:14:43,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:43,050 INFO L85 PathProgramCache]: Analyzing trace with hash -4363447, now seen corresponding path program 12 times [2022-11-25 18:14:43,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:14:43,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128164857] [2022-11-25 18:14:43,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:43,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:14:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:43,334 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 18:14:43,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:14:43,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128164857] [2022-11-25 18:14:43,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128164857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:43,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:43,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:14:43,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123266419] [2022-11-25 18:14:43,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:43,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:14:43,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:14:43,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:14:43,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:14:43,369 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 254 [2022-11-25 18:14:43,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 194 transitions, 3230 flow. Second operand has 9 states, 9 states have (on average 115.88888888888889) internal successors, (1043), 9 states have internal predecessors, (1043), 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 18:14:43,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:14:43,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 254 [2022-11-25 18:14:43,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:14:44,310 INFO L130 PetriNetUnfolder]: 1223/2192 cut-off events. [2022-11-25 18:14:44,310 INFO L131 PetriNetUnfolder]: For 15366/15366 co-relation queries the response was YES. [2022-11-25 18:14:44,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15083 conditions, 2192 events. 1223/2192 cut-off events. For 15366/15366 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 12970 event pairs, 18 based on Foata normal form. 130/2322 useless extension candidates. Maximal degree in co-relation 15057. Up to 783 conditions per place. [2022-11-25 18:14:44,334 INFO L137 encePairwiseOnDemand]: 244/254 looper letters, 103 selfloop transitions, 158 changer transitions 27/288 dead transitions. [2022-11-25 18:14:44,334 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 288 transitions, 4549 flow [2022-11-25 18:14:44,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 18:14:44,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-25 18:14:44,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1621 transitions. [2022-11-25 18:14:44,340 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4909145972138098 [2022-11-25 18:14:44,340 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1621 transitions. [2022-11-25 18:14:44,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1621 transitions. [2022-11-25 18:14:44,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:14:44,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1621 transitions. [2022-11-25 18:14:44,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 124.6923076923077) internal successors, (1621), 13 states have internal predecessors, (1621), 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 18:14:44,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 254.0) internal successors, (3556), 14 states have internal predecessors, (3556), 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 18:14:44,355 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 254.0) internal successors, (3556), 14 states have internal predecessors, (3556), 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 18:14:44,355 INFO L175 Difference]: Start difference. First operand has 94 places, 194 transitions, 3230 flow. Second operand 13 states and 1621 transitions. [2022-11-25 18:14:44,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 288 transitions, 4549 flow [2022-11-25 18:14:44,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 288 transitions, 4131 flow, removed 26 selfloop flow, removed 10 redundant places. [2022-11-25 18:14:44,427 INFO L231 Difference]: Finished difference. Result has 98 places, 190 transitions, 3191 flow [2022-11-25 18:14:44,427 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=2622, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3191, PETRI_PLACES=98, PETRI_TRANSITIONS=190} [2022-11-25 18:14:44,428 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 59 predicate places. [2022-11-25 18:14:44,429 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 190 transitions, 3191 flow [2022-11-25 18:14:44,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 115.88888888888889) internal successors, (1043), 9 states have internal predecessors, (1043), 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 18:14:44,430 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:44,430 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] [2022-11-25 18:14:44,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 18:14:44,430 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:14:44,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:44,431 INFO L85 PathProgramCache]: Analyzing trace with hash -71684469, now seen corresponding path program 13 times [2022-11-25 18:14:44,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:14:44,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570945993] [2022-11-25 18:14:44,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:44,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:14:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:44,727 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 18:14:44,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:14:44,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570945993] [2022-11-25 18:14:44,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570945993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:44,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:44,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:14:44,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161964791] [2022-11-25 18:14:44,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:44,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:14:44,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:14:44,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:14:44,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:14:44,764 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 254 [2022-11-25 18:14:44,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 190 transitions, 3191 flow. Second operand has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 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 18:14:44,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:14:44,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 254 [2022-11-25 18:14:44,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:14:45,461 INFO L130 PetriNetUnfolder]: 1228/2225 cut-off events. [2022-11-25 18:14:45,461 INFO L131 PetriNetUnfolder]: For 16025/16025 co-relation queries the response was YES. [2022-11-25 18:14:45,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15901 conditions, 2225 events. 1228/2225 cut-off events. For 16025/16025 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 13345 event pairs, 108 based on Foata normal form. 16/2241 useless extension candidates. Maximal degree in co-relation 15877. Up to 1868 conditions per place. [2022-11-25 18:14:45,485 INFO L137 encePairwiseOnDemand]: 246/254 looper letters, 165 selfloop transitions, 76 changer transitions 1/242 dead transitions. [2022-11-25 18:14:45,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 242 transitions, 4256 flow [2022-11-25 18:14:45,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 18:14:45,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 18:14:45,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 965 transitions. [2022-11-25 18:14:45,492 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4749015748031496 [2022-11-25 18:14:45,492 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 965 transitions. [2022-11-25 18:14:45,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 965 transitions. [2022-11-25 18:14:45,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:14:45,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 965 transitions. [2022-11-25 18:14:45,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 120.625) internal successors, (965), 8 states have internal predecessors, (965), 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 18:14:45,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 254.0) internal successors, (2286), 9 states have internal predecessors, (2286), 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 18:14:45,504 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 254.0) internal successors, (2286), 9 states have internal predecessors, (2286), 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 18:14:45,504 INFO L175 Difference]: Start difference. First operand has 98 places, 190 transitions, 3191 flow. Second operand 8 states and 965 transitions. [2022-11-25 18:14:45,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 242 transitions, 4256 flow [2022-11-25 18:14:45,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 242 transitions, 4018 flow, removed 50 selfloop flow, removed 6 redundant places. [2022-11-25 18:14:45,606 INFO L231 Difference]: Finished difference. Result has 100 places, 208 transitions, 3590 flow [2022-11-25 18:14:45,607 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=2954, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3590, PETRI_PLACES=100, PETRI_TRANSITIONS=208} [2022-11-25 18:14:45,609 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 61 predicate places. [2022-11-25 18:14:45,609 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 208 transitions, 3590 flow [2022-11-25 18:14:45,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 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 18:14:45,610 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:45,610 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] [2022-11-25 18:14:45,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 18:14:45,610 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:14:45,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:45,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1266154191, now seen corresponding path program 14 times [2022-11-25 18:14:45,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:14:45,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15329624] [2022-11-25 18:14:45,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:45,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:14:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:45,987 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 18:14:45,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:14:45,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15329624] [2022-11-25 18:14:45,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15329624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:45,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:45,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:14:45,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287714725] [2022-11-25 18:14:45,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:45,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:14:45,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:14:45,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:14:45,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:14:46,027 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 254 [2022-11-25 18:14:46,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 208 transitions, 3590 flow. Second operand has 8 states, 8 states have (on average 115.25) internal successors, (922), 8 states have internal predecessors, (922), 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 18:14:46,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:14:46,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 254 [2022-11-25 18:14:46,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:14:46,836 INFO L130 PetriNetUnfolder]: 1222/2235 cut-off events. [2022-11-25 18:14:46,836 INFO L131 PetriNetUnfolder]: For 16117/16117 co-relation queries the response was YES. [2022-11-25 18:14:46,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15571 conditions, 2235 events. 1222/2235 cut-off events. For 16117/16117 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 13605 event pairs, 22 based on Foata normal form. 34/2269 useless extension candidates. Maximal degree in co-relation 15547. Up to 884 conditions per place. [2022-11-25 18:14:46,860 INFO L137 encePairwiseOnDemand]: 245/254 looper letters, 80 selfloop transitions, 182 changer transitions 5/267 dead transitions. [2022-11-25 18:14:46,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 267 transitions, 4474 flow [2022-11-25 18:14:46,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 18:14:46,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 18:14:46,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1236 transitions. [2022-11-25 18:14:46,864 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48661417322834644 [2022-11-25 18:14:46,864 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1236 transitions. [2022-11-25 18:14:46,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1236 transitions. [2022-11-25 18:14:46,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:14:46,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1236 transitions. [2022-11-25 18:14:46,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 123.6) internal successors, (1236), 10 states have internal predecessors, (1236), 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 18:14:46,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 254.0) internal successors, (2794), 11 states have internal predecessors, (2794), 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 18:14:46,874 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 254.0) internal successors, (2794), 11 states have internal predecessors, (2794), 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 18:14:46,874 INFO L175 Difference]: Start difference. First operand has 100 places, 208 transitions, 3590 flow. Second operand 10 states and 1236 transitions. [2022-11-25 18:14:46,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 267 transitions, 4474 flow [2022-11-25 18:14:46,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 267 transitions, 4326 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-25 18:14:46,963 INFO L231 Difference]: Finished difference. Result has 103 places, 212 transitions, 3905 flow [2022-11-25 18:14:46,963 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=3412, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3905, PETRI_PLACES=103, PETRI_TRANSITIONS=212} [2022-11-25 18:14:46,964 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 64 predicate places. [2022-11-25 18:14:46,965 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 212 transitions, 3905 flow [2022-11-25 18:14:46,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 115.25) internal successors, (922), 8 states have internal predecessors, (922), 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 18:14:46,965 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:46,966 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] [2022-11-25 18:14:46,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 18:14:46,966 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:14:46,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:46,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1595791307, now seen corresponding path program 15 times [2022-11-25 18:14:46,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:14:46,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234489868] [2022-11-25 18:14:46,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:46,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:14:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:47,266 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 18:14:47,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:14:47,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234489868] [2022-11-25 18:14:47,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234489868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:47,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:47,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:14:47,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975381489] [2022-11-25 18:14:47,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:47,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:14:47,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:14:47,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:14:47,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:14:47,300 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 254 [2022-11-25 18:14:47,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 212 transitions, 3905 flow. Second operand has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 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 18:14:47,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:14:47,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 254 [2022-11-25 18:14:47,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:14:48,012 INFO L130 PetriNetUnfolder]: 1199/2210 cut-off events. [2022-11-25 18:14:48,012 INFO L131 PetriNetUnfolder]: For 17493/17493 co-relation queries the response was YES. [2022-11-25 18:14:48,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16090 conditions, 2210 events. 1199/2210 cut-off events. For 17493/17493 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 13522 event pairs, 108 based on Foata normal form. 20/2230 useless extension candidates. Maximal degree in co-relation 16067. Up to 1852 conditions per place. [2022-11-25 18:14:48,033 INFO L137 encePairwiseOnDemand]: 246/254 looper letters, 169 selfloop transitions, 72 changer transitions 6/247 dead transitions. [2022-11-25 18:14:48,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 247 transitions, 4548 flow [2022-11-25 18:14:48,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 18:14:48,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 18:14:48,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 969 transitions. [2022-11-25 18:14:48,042 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47687007874015747 [2022-11-25 18:14:48,042 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 969 transitions. [2022-11-25 18:14:48,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 969 transitions. [2022-11-25 18:14:48,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:14:48,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 969 transitions. [2022-11-25 18:14:48,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 121.125) internal successors, (969), 8 states have internal predecessors, (969), 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 18:14:48,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 254.0) internal successors, (2286), 9 states have internal predecessors, (2286), 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 18:14:48,050 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 254.0) internal successors, (2286), 9 states have internal predecessors, (2286), 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 18:14:48,050 INFO L175 Difference]: Start difference. First operand has 103 places, 212 transitions, 3905 flow. Second operand 8 states and 969 transitions. [2022-11-25 18:14:48,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 247 transitions, 4548 flow [2022-11-25 18:14:48,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 247 transitions, 4293 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-11-25 18:14:48,140 INFO L231 Difference]: Finished difference. Result has 104 places, 211 transitions, 3802 flow [2022-11-25 18:14:48,140 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=3552, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3802, PETRI_PLACES=104, PETRI_TRANSITIONS=211} [2022-11-25 18:14:48,141 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 65 predicate places. [2022-11-25 18:14:48,141 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 211 transitions, 3802 flow [2022-11-25 18:14:48,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 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 18:14:48,142 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:48,142 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] [2022-11-25 18:14:48,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 18:14:48,143 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:14:48,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:48,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1970503043, now seen corresponding path program 16 times [2022-11-25 18:14:48,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:14:48,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055028771] [2022-11-25 18:14:48,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:48,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:14:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:48,668 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 18:14:48,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:14:48,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055028771] [2022-11-25 18:14:48,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055028771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:48,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:48,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 18:14:48,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233280258] [2022-11-25 18:14:48,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:48,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 18:14:48,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:14:48,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 18:14:48,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:14:48,795 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 254 [2022-11-25 18:14:48,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 211 transitions, 3802 flow. Second operand has 10 states, 10 states have (on average 108.6) internal successors, (1086), 10 states have internal predecessors, (1086), 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 18:14:48,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:14:48,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 254 [2022-11-25 18:14:48,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:14:49,592 INFO L130 PetriNetUnfolder]: 1161/2152 cut-off events. [2022-11-25 18:14:49,593 INFO L131 PetriNetUnfolder]: For 17393/17393 co-relation queries the response was YES. [2022-11-25 18:14:49,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15173 conditions, 2152 events. 1161/2152 cut-off events. For 17393/17393 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 13184 event pairs, 118 based on Foata normal form. 24/2176 useless extension candidates. Maximal degree in co-relation 15149. Up to 1984 conditions per place. [2022-11-25 18:14:49,617 INFO L137 encePairwiseOnDemand]: 245/254 looper letters, 210 selfloop transitions, 39 changer transitions 12/261 dead transitions. [2022-11-25 18:14:49,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 261 transitions, 4771 flow [2022-11-25 18:14:49,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 18:14:49,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-25 18:14:49,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1469 transitions. [2022-11-25 18:14:49,622 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4448818897637795 [2022-11-25 18:14:49,622 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1469 transitions. [2022-11-25 18:14:49,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1469 transitions. [2022-11-25 18:14:49,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:14:49,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1469 transitions. [2022-11-25 18:14:49,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 113.0) internal successors, (1469), 13 states have internal predecessors, (1469), 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 18:14:49,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 254.0) internal successors, (3556), 14 states have internal predecessors, (3556), 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 18:14:49,634 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 254.0) internal successors, (3556), 14 states have internal predecessors, (3556), 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 18:14:49,635 INFO L175 Difference]: Start difference. First operand has 104 places, 211 transitions, 3802 flow. Second operand 13 states and 1469 transitions. [2022-11-25 18:14:49,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 261 transitions, 4771 flow [2022-11-25 18:14:49,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 261 transitions, 4683 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-25 18:14:49,719 INFO L231 Difference]: Finished difference. Result has 116 places, 215 transitions, 3878 flow [2022-11-25 18:14:49,719 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=3680, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3878, PETRI_PLACES=116, PETRI_TRANSITIONS=215} [2022-11-25 18:14:49,720 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 77 predicate places. [2022-11-25 18:14:49,720 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 215 transitions, 3878 flow [2022-11-25 18:14:49,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 108.6) internal successors, (1086), 10 states have internal predecessors, (1086), 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 18:14:49,721 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:49,721 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] [2022-11-25 18:14:49,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 18:14:49,722 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:14:49,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:49,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1868195983, now seen corresponding path program 17 times [2022-11-25 18:14:49,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:14:49,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706177319] [2022-11-25 18:14:49,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:49,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:14:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:50,062 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 18:14:50,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:14:50,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706177319] [2022-11-25 18:14:50,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706177319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:50,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:50,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:14:50,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548887397] [2022-11-25 18:14:50,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:50,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:14:50,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:14:50,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:14:50,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:14:50,187 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 254 [2022-11-25 18:14:50,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 215 transitions, 3878 flow. Second operand has 7 states, 7 states have (on average 111.71428571428571) internal successors, (782), 7 states have internal predecessors, (782), 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 18:14:50,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:14:50,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 254 [2022-11-25 18:14:50,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:14:50,903 INFO L130 PetriNetUnfolder]: 1115/2086 cut-off events. [2022-11-25 18:14:50,903 INFO L131 PetriNetUnfolder]: For 17083/17083 co-relation queries the response was YES. [2022-11-25 18:14:50,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14528 conditions, 2086 events. 1115/2086 cut-off events. For 17083/17083 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 12766 event pairs, 120 based on Foata normal form. 20/2106 useless extension candidates. Maximal degree in co-relation 14499. Up to 1968 conditions per place. [2022-11-25 18:14:50,925 INFO L137 encePairwiseOnDemand]: 246/254 looper letters, 203 selfloop transitions, 20 changer transitions 16/239 dead transitions. [2022-11-25 18:14:50,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 239 transitions, 4360 flow [2022-11-25 18:14:50,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 18:14:50,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 18:14:50,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 936 transitions. [2022-11-25 18:14:50,929 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46062992125984253 [2022-11-25 18:14:50,929 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 936 transitions. [2022-11-25 18:14:50,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 936 transitions. [2022-11-25 18:14:50,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:14:50,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 936 transitions. [2022-11-25 18:14:50,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 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 18:14:50,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 254.0) internal successors, (2286), 9 states have internal predecessors, (2286), 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 18:14:50,937 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 254.0) internal successors, (2286), 9 states have internal predecessors, (2286), 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 18:14:50,937 INFO L175 Difference]: Start difference. First operand has 116 places, 215 transitions, 3878 flow. Second operand 8 states and 936 transitions. [2022-11-25 18:14:50,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 239 transitions, 4360 flow [2022-11-25 18:14:51,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 239 transitions, 4264 flow, removed 15 selfloop flow, removed 8 redundant places. [2022-11-25 18:14:51,029 INFO L231 Difference]: Finished difference. Result has 115 places, 205 transitions, 3615 flow [2022-11-25 18:14:51,029 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=3645, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3615, PETRI_PLACES=115, PETRI_TRANSITIONS=205} [2022-11-25 18:14:51,030 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 76 predicate places. [2022-11-25 18:14:51,030 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 205 transitions, 3615 flow [2022-11-25 18:14:51,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 111.71428571428571) internal successors, (782), 7 states have internal predecessors, (782), 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 18:14:51,031 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:51,031 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] [2022-11-25 18:14:51,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 18:14:51,031 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:14:51,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:51,032 INFO L85 PathProgramCache]: Analyzing trace with hash -268374001, now seen corresponding path program 18 times [2022-11-25 18:14:51,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:14:51,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623236999] [2022-11-25 18:14:51,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:51,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:14:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:51,328 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 18:14:51,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:14:51,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623236999] [2022-11-25 18:14:51,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623236999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:51,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:51,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:14:51,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428381427] [2022-11-25 18:14:51,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:51,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:14:51,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:14:51,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:14:51,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:14:51,382 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 254 [2022-11-25 18:14:51,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 205 transitions, 3615 flow. Second operand has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 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 18:14:51,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:14:51,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 254 [2022-11-25 18:14:51,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:14:52,279 INFO L130 PetriNetUnfolder]: 1095/2064 cut-off events. [2022-11-25 18:14:52,279 INFO L131 PetriNetUnfolder]: For 16653/16653 co-relation queries the response was YES. [2022-11-25 18:14:52,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14251 conditions, 2064 events. 1095/2064 cut-off events. For 16653/16653 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 12733 event pairs, 24 based on Foata normal form. 40/2104 useless extension candidates. Maximal degree in co-relation 14222. Up to 756 conditions per place. [2022-11-25 18:14:52,301 INFO L137 encePairwiseOnDemand]: 245/254 looper letters, 86 selfloop transitions, 175 changer transitions 14/275 dead transitions. [2022-11-25 18:14:52,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 275 transitions, 4654 flow [2022-11-25 18:14:52,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 18:14:52,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-25 18:14:52,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1572 transitions. [2022-11-25 18:14:52,306 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4760751059963658 [2022-11-25 18:14:52,307 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1572 transitions. [2022-11-25 18:14:52,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1572 transitions. [2022-11-25 18:14:52,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:14:52,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1572 transitions. [2022-11-25 18:14:52,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 120.92307692307692) internal successors, (1572), 13 states have internal predecessors, (1572), 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 18:14:52,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 254.0) internal successors, (3556), 14 states have internal predecessors, (3556), 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 18:14:52,319 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 254.0) internal successors, (3556), 14 states have internal predecessors, (3556), 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 18:14:52,319 INFO L175 Difference]: Start difference. First operand has 115 places, 205 transitions, 3615 flow. Second operand 13 states and 1572 transitions. [2022-11-25 18:14:52,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 275 transitions, 4654 flow [2022-11-25 18:14:52,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 275 transitions, 4566 flow, removed 15 selfloop flow, removed 8 redundant places. [2022-11-25 18:14:52,462 INFO L231 Difference]: Finished difference. Result has 118 places, 209 transitions, 3923 flow [2022-11-25 18:14:52,463 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=3533, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3923, PETRI_PLACES=118, PETRI_TRANSITIONS=209} [2022-11-25 18:14:52,463 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 79 predicate places. [2022-11-25 18:14:52,464 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 209 transitions, 3923 flow [2022-11-25 18:14:52,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 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 18:14:52,464 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:52,465 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] [2022-11-25 18:14:52,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 18:14:52,465 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:14:52,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:52,466 INFO L85 PathProgramCache]: Analyzing trace with hash -866110791, now seen corresponding path program 19 times [2022-11-25 18:14:52,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:14:52,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735432587] [2022-11-25 18:14:52,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:52,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:14:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:52,942 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 18:14:52,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:14:52,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735432587] [2022-11-25 18:14:52,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735432587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:52,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:52,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:14:52,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656732704] [2022-11-25 18:14:52,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:52,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:14:52,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:14:52,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:14:52,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:14:53,002 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 254 [2022-11-25 18:14:53,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 209 transitions, 3923 flow. Second operand has 9 states, 9 states have (on average 110.88888888888889) internal successors, (998), 9 states have internal predecessors, (998), 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 18:14:53,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:14:53,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 254 [2022-11-25 18:14:53,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:14:53,749 INFO L130 PetriNetUnfolder]: 1024/1957 cut-off events. [2022-11-25 18:14:53,749 INFO L131 PetriNetUnfolder]: For 16756/16756 co-relation queries the response was YES. [2022-11-25 18:14:53,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14347 conditions, 1957 events. 1024/1957 cut-off events. For 16756/16756 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 12204 event pairs, 26 based on Foata normal form. 34/1991 useless extension candidates. Maximal degree in co-relation 14318. Up to 749 conditions per place. [2022-11-25 18:14:53,765 INFO L137 encePairwiseOnDemand]: 245/254 looper letters, 77 selfloop transitions, 173 changer transitions 12/262 dead transitions. [2022-11-25 18:14:53,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 262 transitions, 4702 flow [2022-11-25 18:14:53,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 18:14:53,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 18:14:53,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1194 transitions. [2022-11-25 18:14:53,774 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4700787401574803 [2022-11-25 18:14:53,775 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1194 transitions. [2022-11-25 18:14:53,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1194 transitions. [2022-11-25 18:14:53,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:14:53,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1194 transitions. [2022-11-25 18:14:53,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 119.4) internal successors, (1194), 10 states have internal predecessors, (1194), 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 18:14:53,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 254.0) internal successors, (2794), 11 states have internal predecessors, (2794), 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 18:14:53,783 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 254.0) internal successors, (2794), 11 states have internal predecessors, (2794), 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 18:14:53,783 INFO L175 Difference]: Start difference. First operand has 118 places, 209 transitions, 3923 flow. Second operand 10 states and 1194 transitions. [2022-11-25 18:14:53,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 262 transitions, 4702 flow [2022-11-25 18:14:53,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 262 transitions, 4314 flow, removed 2 selfloop flow, removed 12 redundant places. [2022-11-25 18:14:53,871 INFO L231 Difference]: Finished difference. Result has 115 places, 206 transitions, 3831 flow [2022-11-25 18:14:53,872 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=3505, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3831, PETRI_PLACES=115, PETRI_TRANSITIONS=206} [2022-11-25 18:14:53,872 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 76 predicate places. [2022-11-25 18:14:53,873 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 206 transitions, 3831 flow [2022-11-25 18:14:53,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 110.88888888888889) internal successors, (998), 9 states have internal predecessors, (998), 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 18:14:53,873 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:53,873 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] [2022-11-25 18:14:53,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 18:14:53,874 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:14:53,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:53,875 INFO L85 PathProgramCache]: Analyzing trace with hash -719565873, now seen corresponding path program 20 times [2022-11-25 18:14:53,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:14:53,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134163316] [2022-11-25 18:14:53,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:53,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:14:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:54,256 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 18:14:54,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:14:54,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134163316] [2022-11-25 18:14:54,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134163316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:54,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:54,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:14:54,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443855041] [2022-11-25 18:14:54,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:54,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:14:54,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:14:54,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:14:54,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:14:54,377 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 254 [2022-11-25 18:14:54,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 206 transitions, 3831 flow. Second operand has 9 states, 9 states have (on average 110.88888888888889) internal successors, (998), 9 states have internal predecessors, (998), 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 18:14:54,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:14:54,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 254 [2022-11-25 18:14:54,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:14:55,256 INFO L130 PetriNetUnfolder]: 980/1915 cut-off events. [2022-11-25 18:14:55,257 INFO L131 PetriNetUnfolder]: For 17164/17164 co-relation queries the response was YES. [2022-11-25 18:14:55,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13975 conditions, 1915 events. 980/1915 cut-off events. For 17164/17164 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 12211 event pairs, 24 based on Foata normal form. 40/1955 useless extension candidates. Maximal degree in co-relation 13948. Up to 680 conditions per place. [2022-11-25 18:14:55,275 INFO L137 encePairwiseOnDemand]: 245/254 looper letters, 81 selfloop transitions, 171 changer transitions 25/277 dead transitions. [2022-11-25 18:14:55,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 277 transitions, 4895 flow [2022-11-25 18:14:55,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 18:14:55,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-25 18:14:55,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1533 transitions. [2022-11-25 18:14:55,280 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4642640823743186 [2022-11-25 18:14:55,280 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1533 transitions. [2022-11-25 18:14:55,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1533 transitions. [2022-11-25 18:14:55,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:14:55,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1533 transitions. [2022-11-25 18:14:55,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 117.92307692307692) internal successors, (1533), 13 states have internal predecessors, (1533), 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 18:14:55,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 254.0) internal successors, (3556), 14 states have internal predecessors, (3556), 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 18:14:55,291 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 254.0) internal successors, (3556), 14 states have internal predecessors, (3556), 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 18:14:55,291 INFO L175 Difference]: Start difference. First operand has 115 places, 206 transitions, 3831 flow. Second operand 13 states and 1533 transitions. [2022-11-25 18:14:55,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 277 transitions, 4895 flow [2022-11-25 18:14:55,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 277 transitions, 4541 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-11-25 18:14:55,369 INFO L231 Difference]: Finished difference. Result has 117 places, 203 transitions, 3785 flow [2022-11-25 18:14:55,369 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=3480, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3785, PETRI_PLACES=117, PETRI_TRANSITIONS=203} [2022-11-25 18:14:55,370 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 78 predicate places. [2022-11-25 18:14:55,370 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 203 transitions, 3785 flow [2022-11-25 18:14:55,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 110.88888888888889) internal successors, (998), 9 states have internal predecessors, (998), 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 18:14:55,371 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:55,371 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] [2022-11-25 18:14:55,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 18:14:55,372 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:14:55,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:55,372 INFO L85 PathProgramCache]: Analyzing trace with hash -698003069, now seen corresponding path program 21 times [2022-11-25 18:14:55,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:14:55,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744212999] [2022-11-25 18:14:55,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:55,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:14:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:55,728 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 18:14:55,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:14:55,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744212999] [2022-11-25 18:14:55,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744212999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:55,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:55,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:14:55,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285869662] [2022-11-25 18:14:55,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:55,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:14:55,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:14:55,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:14:55,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:14:55,772 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 254 [2022-11-25 18:14:55,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 203 transitions, 3785 flow. Second operand has 9 states, 9 states have (on average 114.88888888888889) internal successors, (1034), 9 states have internal predecessors, (1034), 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 18:14:55,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:14:55,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 254 [2022-11-25 18:14:55,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:14:56,364 INFO L130 PetriNetUnfolder]: 773/1490 cut-off events. [2022-11-25 18:14:56,364 INFO L131 PetriNetUnfolder]: For 15936/15936 co-relation queries the response was YES. [2022-11-25 18:14:56,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10768 conditions, 1490 events. 773/1490 cut-off events. For 15936/15936 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 8595 event pairs, 56 based on Foata normal form. 4/1494 useless extension candidates. Maximal degree in co-relation 10742. Up to 749 conditions per place. [2022-11-25 18:14:56,374 INFO L137 encePairwiseOnDemand]: 245/254 looper letters, 117 selfloop transitions, 128 changer transitions 7/252 dead transitions. [2022-11-25 18:14:56,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 252 transitions, 4598 flow [2022-11-25 18:14:56,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 18:14:56,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 18:14:56,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1326 transitions. [2022-11-25 18:14:56,379 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47458840372226196 [2022-11-25 18:14:56,379 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1326 transitions. [2022-11-25 18:14:56,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1326 transitions. [2022-11-25 18:14:56,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:14:56,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1326 transitions. [2022-11-25 18:14:56,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 120.54545454545455) internal successors, (1326), 11 states have internal predecessors, (1326), 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 18:14:56,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 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 18:14:56,389 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 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 18:14:56,389 INFO L175 Difference]: Start difference. First operand has 117 places, 203 transitions, 3785 flow. Second operand 11 states and 1326 transitions. [2022-11-25 18:14:56,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 252 transitions, 4598 flow [2022-11-25 18:14:56,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 252 transitions, 4485 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-11-25 18:14:56,452 INFO L231 Difference]: Finished difference. Result has 122 places, 210 transitions, 4247 flow [2022-11-25 18:14:56,453 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=3689, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4247, PETRI_PLACES=122, PETRI_TRANSITIONS=210} [2022-11-25 18:14:56,453 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 83 predicate places. [2022-11-25 18:14:56,454 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 210 transitions, 4247 flow [2022-11-25 18:14:56,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.88888888888889) internal successors, (1034), 9 states have internal predecessors, (1034), 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 18:14:56,454 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:56,454 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] [2022-11-25 18:14:56,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-25 18:14:56,455 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:14:56,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:56,456 INFO L85 PathProgramCache]: Analyzing trace with hash 33390305, now seen corresponding path program 22 times [2022-11-25 18:14:56,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:14:56,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513234403] [2022-11-25 18:14:56,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:56,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:14:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:56,745 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 18:14:56,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:14:56,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513234403] [2022-11-25 18:14:56,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513234403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:56,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:56,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:14:56,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851321494] [2022-11-25 18:14:56,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:56,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:14:56,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:14:56,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:14:56,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:14:56,780 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 254 [2022-11-25 18:14:56,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 210 transitions, 4247 flow. Second operand has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 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 18:14:56,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:14:56,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 254 [2022-11-25 18:14:56,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:14:57,412 INFO L130 PetriNetUnfolder]: 750/1455 cut-off events. [2022-11-25 18:14:57,412 INFO L131 PetriNetUnfolder]: For 19102/19102 co-relation queries the response was YES. [2022-11-25 18:14:57,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11305 conditions, 1455 events. 750/1455 cut-off events. For 19102/19102 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 8424 event pairs, 104 based on Foata normal form. 2/1457 useless extension candidates. Maximal degree in co-relation 11277. Up to 1381 conditions per place. [2022-11-25 18:14:57,428 INFO L137 encePairwiseOnDemand]: 246/254 looper letters, 207 selfloop transitions, 17 changer transitions 10/234 dead transitions. [2022-11-25 18:14:57,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 234 transitions, 4828 flow [2022-11-25 18:14:57,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 18:14:57,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 18:14:57,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1399 transitions. [2022-11-25 18:14:57,433 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45898950131233596 [2022-11-25 18:14:57,433 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1399 transitions. [2022-11-25 18:14:57,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1399 transitions. [2022-11-25 18:14:57,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:14:57,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1399 transitions. [2022-11-25 18:14:57,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 116.58333333333333) internal successors, (1399), 12 states have internal predecessors, (1399), 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 18:14:57,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 254.0) internal successors, (3302), 13 states have internal predecessors, (3302), 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 18:14:57,443 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 254.0) internal successors, (3302), 13 states have internal predecessors, (3302), 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 18:14:57,443 INFO L175 Difference]: Start difference. First operand has 122 places, 210 transitions, 4247 flow. Second operand 12 states and 1399 transitions. [2022-11-25 18:14:57,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 234 transitions, 4828 flow [2022-11-25 18:14:57,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 234 transitions, 4746 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-11-25 18:14:57,528 INFO L231 Difference]: Finished difference. Result has 126 places, 208 transitions, 4191 flow [2022-11-25 18:14:57,529 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=4166, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4191, PETRI_PLACES=126, PETRI_TRANSITIONS=208} [2022-11-25 18:14:57,529 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 87 predicate places. [2022-11-25 18:14:57,529 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 208 transitions, 4191 flow [2022-11-25 18:14:57,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 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 18:14:57,530 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:57,530 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] [2022-11-25 18:14:57,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-25 18:14:57,531 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:14:57,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:57,531 INFO L85 PathProgramCache]: Analyzing trace with hash -273243115, now seen corresponding path program 23 times [2022-11-25 18:14:57,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:14:57,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495691714] [2022-11-25 18:14:57,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:57,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:14:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:57,806 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 18:14:57,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:14:57,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495691714] [2022-11-25 18:14:57,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495691714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:57,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:57,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:14:57,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17951747] [2022-11-25 18:14:57,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:57,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:14:57,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:14:57,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:14:57,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:14:57,841 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 254 [2022-11-25 18:14:57,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 208 transitions, 4191 flow. Second operand has 9 states, 9 states have (on average 115.88888888888889) internal successors, (1043), 9 states have internal predecessors, (1043), 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 18:14:57,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:14:57,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 254 [2022-11-25 18:14:57,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:14:58,541 INFO L130 PetriNetUnfolder]: 766/1481 cut-off events. [2022-11-25 18:14:58,542 INFO L131 PetriNetUnfolder]: For 20428/20428 co-relation queries the response was YES. [2022-11-25 18:14:58,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11370 conditions, 1481 events. 766/1481 cut-off events. For 20428/20428 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 8595 event pairs, 84 based on Foata normal form. 6/1487 useless extension candidates. Maximal degree in co-relation 11342. Up to 1039 conditions per place. [2022-11-25 18:14:58,557 INFO L137 encePairwiseOnDemand]: 245/254 looper letters, 150 selfloop transitions, 105 changer transitions 20/275 dead transitions. [2022-11-25 18:14:58,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 275 transitions, 5657 flow [2022-11-25 18:14:58,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 18:14:58,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-25 18:14:58,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1581 transitions. [2022-11-25 18:14:58,562 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4788007268322229 [2022-11-25 18:14:58,562 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1581 transitions. [2022-11-25 18:14:58,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1581 transitions. [2022-11-25 18:14:58,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:14:58,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1581 transitions. [2022-11-25 18:14:58,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 121.61538461538461) internal successors, (1581), 13 states have internal predecessors, (1581), 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 18:14:58,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 254.0) internal successors, (3556), 14 states have internal predecessors, (3556), 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 18:14:58,579 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 254.0) internal successors, (3556), 14 states have internal predecessors, (3556), 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 18:14:58,579 INFO L175 Difference]: Start difference. First operand has 126 places, 208 transitions, 4191 flow. Second operand 13 states and 1581 transitions. [2022-11-25 18:14:58,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 275 transitions, 5657 flow [2022-11-25 18:14:58,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 275 transitions, 5616 flow, removed 1 selfloop flow, removed 9 redundant places. [2022-11-25 18:14:58,649 INFO L231 Difference]: Finished difference. Result has 131 places, 221 transitions, 4777 flow [2022-11-25 18:14:58,650 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=4150, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4777, PETRI_PLACES=131, PETRI_TRANSITIONS=221} [2022-11-25 18:14:58,650 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 92 predicate places. [2022-11-25 18:14:58,650 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 221 transitions, 4777 flow [2022-11-25 18:14:58,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 115.88888888888889) internal successors, (1043), 9 states have internal predecessors, (1043), 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 18:14:58,651 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:58,651 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] [2022-11-25 18:14:58,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-25 18:14:58,652 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:14:58,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:58,653 INFO L85 PathProgramCache]: Analyzing trace with hash -372217113, now seen corresponding path program 24 times [2022-11-25 18:14:58,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:14:58,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279035707] [2022-11-25 18:14:58,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:58,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:14:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:59,015 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 18:14:59,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:14:59,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279035707] [2022-11-25 18:14:59,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279035707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:59,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:59,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:14:59,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471368616] [2022-11-25 18:14:59,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:59,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:14:59,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:14:59,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:14:59,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:14:59,059 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 254 [2022-11-25 18:14:59,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 221 transitions, 4777 flow. Second operand has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 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 18:14:59,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:14:59,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 254 [2022-11-25 18:14:59,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:14:59,631 INFO L130 PetriNetUnfolder]: 726/1421 cut-off events. [2022-11-25 18:14:59,631 INFO L131 PetriNetUnfolder]: For 23846/23846 co-relation queries the response was YES. [2022-11-25 18:14:59,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11509 conditions, 1421 events. 726/1421 cut-off events. For 23846/23846 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 8228 event pairs, 84 based on Foata normal form. 4/1425 useless extension candidates. Maximal degree in co-relation 11476. Up to 1353 conditions per place. [2022-11-25 18:14:59,648 INFO L137 encePairwiseOnDemand]: 245/254 looper letters, 215 selfloop transitions, 16 changer transitions 7/238 dead transitions. [2022-11-25 18:14:59,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 238 transitions, 5338 flow [2022-11-25 18:14:59,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 18:14:59,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 18:14:59,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1170 transitions. [2022-11-25 18:14:59,652 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46062992125984253 [2022-11-25 18:14:59,652 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1170 transitions. [2022-11-25 18:14:59,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1170 transitions. [2022-11-25 18:14:59,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:14:59,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1170 transitions. [2022-11-25 18:14:59,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 117.0) internal successors, (1170), 10 states have internal predecessors, (1170), 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 18:14:59,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 254.0) internal successors, (2794), 11 states have internal predecessors, (2794), 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 18:14:59,659 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 254.0) internal successors, (2794), 11 states have internal predecessors, (2794), 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 18:14:59,660 INFO L175 Difference]: Start difference. First operand has 131 places, 221 transitions, 4777 flow. Second operand 10 states and 1170 transitions. [2022-11-25 18:14:59,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 238 transitions, 5338 flow [2022-11-25 18:14:59,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 238 transitions, 5146 flow, removed 41 selfloop flow, removed 8 redundant places. [2022-11-25 18:14:59,757 INFO L231 Difference]: Finished difference. Result has 131 places, 217 transitions, 4559 flow [2022-11-25 18:14:59,757 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=4578, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4559, PETRI_PLACES=131, PETRI_TRANSITIONS=217} [2022-11-25 18:14:59,759 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 92 predicate places. [2022-11-25 18:14:59,759 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 217 transitions, 4559 flow [2022-11-25 18:14:59,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 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 18:14:59,760 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:59,760 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] [2022-11-25 18:14:59,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-25 18:14:59,760 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:14:59,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:59,762 INFO L85 PathProgramCache]: Analyzing trace with hash -276894135, now seen corresponding path program 25 times [2022-11-25 18:14:59,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:14:59,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032712066] [2022-11-25 18:14:59,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:59,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:14:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:00,084 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 18:15:00,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:00,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032712066] [2022-11-25 18:15:00,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032712066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:00,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:00,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:15:00,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863620160] [2022-11-25 18:15:00,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:00,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:15:00,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:00,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:15:00,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:15:00,119 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 254 [2022-11-25 18:15:00,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 217 transitions, 4559 flow. Second operand has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 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 18:15:00,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:00,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 254 [2022-11-25 18:15:00,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:00,751 INFO L130 PetriNetUnfolder]: 716/1399 cut-off events. [2022-11-25 18:15:00,751 INFO L131 PetriNetUnfolder]: For 22400/22400 co-relation queries the response was YES. [2022-11-25 18:15:00,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10975 conditions, 1399 events. 716/1399 cut-off events. For 22400/22400 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 8072 event pairs, 46 based on Foata normal form. 4/1403 useless extension candidates. Maximal degree in co-relation 10944. Up to 737 conditions per place. [2022-11-25 18:15:00,761 INFO L137 encePairwiseOnDemand]: 244/254 looper letters, 115 selfloop transitions, 122 changer transitions 11/248 dead transitions. [2022-11-25 18:15:00,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 248 transitions, 5152 flow [2022-11-25 18:15:00,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 18:15:00,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 18:15:00,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1200 transitions. [2022-11-25 18:15:00,764 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47244094488188976 [2022-11-25 18:15:00,764 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1200 transitions. [2022-11-25 18:15:00,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1200 transitions. [2022-11-25 18:15:00,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:00,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1200 transitions. [2022-11-25 18:15:00,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 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 18:15:00,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 254.0) internal successors, (2794), 11 states have internal predecessors, (2794), 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 18:15:00,772 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 254.0) internal successors, (2794), 11 states have internal predecessors, (2794), 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 18:15:00,773 INFO L175 Difference]: Start difference. First operand has 131 places, 217 transitions, 4559 flow. Second operand 10 states and 1200 transitions. [2022-11-25 18:15:00,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 248 transitions, 5152 flow [2022-11-25 18:15:00,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 248 transitions, 5112 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-25 18:15:00,867 INFO L231 Difference]: Finished difference. Result has 131 places, 208 transitions, 4614 flow [2022-11-25 18:15:00,867 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=4501, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4614, PETRI_PLACES=131, PETRI_TRANSITIONS=208} [2022-11-25 18:15:00,868 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 92 predicate places. [2022-11-25 18:15:00,868 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 208 transitions, 4614 flow [2022-11-25 18:15:00,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 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 18:15:00,869 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:00,869 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] [2022-11-25 18:15:00,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-25 18:15:00,870 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:15:00,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:00,870 INFO L85 PathProgramCache]: Analyzing trace with hash 47002931, now seen corresponding path program 26 times [2022-11-25 18:15:00,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:00,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659547093] [2022-11-25 18:15:00,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:00,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:01,202 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 18:15:01,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:01,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659547093] [2022-11-25 18:15:01,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659547093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:01,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:01,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:15:01,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155128893] [2022-11-25 18:15:01,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:01,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:15:01,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:01,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:15:01,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:15:01,242 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 254 [2022-11-25 18:15:01,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 208 transitions, 4614 flow. Second operand has 9 states, 9 states have (on average 114.88888888888889) internal successors, (1034), 9 states have internal predecessors, (1034), 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 18:15:01,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:01,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 254 [2022-11-25 18:15:01,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:01,853 INFO L130 PetriNetUnfolder]: 702/1363 cut-off events. [2022-11-25 18:15:01,853 INFO L131 PetriNetUnfolder]: For 24631/24631 co-relation queries the response was YES. [2022-11-25 18:15:01,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11319 conditions, 1363 events. 702/1363 cut-off events. For 24631/24631 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7722 event pairs, 46 based on Foata normal form. 2/1365 useless extension candidates. Maximal degree in co-relation 11287. Up to 735 conditions per place. [2022-11-25 18:15:01,868 INFO L137 encePairwiseOnDemand]: 245/254 looper letters, 114 selfloop transitions, 122 changer transitions 2/238 dead transitions. [2022-11-25 18:15:01,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 238 transitions, 5203 flow [2022-11-25 18:15:01,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 18:15:01,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 18:15:01,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1203 transitions. [2022-11-25 18:15:01,872 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4736220472440945 [2022-11-25 18:15:01,872 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1203 transitions. [2022-11-25 18:15:01,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1203 transitions. [2022-11-25 18:15:01,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:01,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1203 transitions. [2022-11-25 18:15:01,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 120.3) internal successors, (1203), 10 states have internal predecessors, (1203), 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 18:15:01,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 254.0) internal successors, (2794), 11 states have internal predecessors, (2794), 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 18:15:01,880 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 254.0) internal successors, (2794), 11 states have internal predecessors, (2794), 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 18:15:01,880 INFO L175 Difference]: Start difference. First operand has 131 places, 208 transitions, 4614 flow. Second operand 10 states and 1203 transitions. [2022-11-25 18:15:01,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 238 transitions, 5203 flow [2022-11-25 18:15:01,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 238 transitions, 5093 flow, removed 18 selfloop flow, removed 6 redundant places. [2022-11-25 18:15:01,987 INFO L231 Difference]: Finished difference. Result has 129 places, 204 transitions, 4671 flow [2022-11-25 18:15:01,988 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=4473, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4671, PETRI_PLACES=129, PETRI_TRANSITIONS=204} [2022-11-25 18:15:01,989 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 90 predicate places. [2022-11-25 18:15:01,989 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 204 transitions, 4671 flow [2022-11-25 18:15:01,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.88888888888889) internal successors, (1034), 9 states have internal predecessors, (1034), 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 18:15:01,990 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:01,990 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] [2022-11-25 18:15:01,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-25 18:15:01,991 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:15:01,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:01,992 INFO L85 PathProgramCache]: Analyzing trace with hash 193547849, now seen corresponding path program 27 times [2022-11-25 18:15:01,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:01,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108874010] [2022-11-25 18:15:01,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:01,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:02,275 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 18:15:02,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:02,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108874010] [2022-11-25 18:15:02,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108874010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:02,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:02,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:15:02,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318895310] [2022-11-25 18:15:02,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:02,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:15:02,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:02,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:15:02,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:15:02,312 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 254 [2022-11-25 18:15:02,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 204 transitions, 4671 flow. Second operand has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 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 18:15:02,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:02,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 254 [2022-11-25 18:15:02,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:02,776 INFO L130 PetriNetUnfolder]: 696/1353 cut-off events. [2022-11-25 18:15:02,776 INFO L131 PetriNetUnfolder]: For 25467/25467 co-relation queries the response was YES. [2022-11-25 18:15:02,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11340 conditions, 1353 events. 696/1353 cut-off events. For 25467/25467 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 7694 event pairs, 78 based on Foata normal form. 4/1357 useless extension candidates. Maximal degree in co-relation 11309. Up to 1310 conditions per place. [2022-11-25 18:15:02,787 INFO L137 encePairwiseOnDemand]: 246/254 looper letters, 204 selfloop transitions, 9 changer transitions 7/220 dead transitions. [2022-11-25 18:15:02,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 220 transitions, 5157 flow [2022-11-25 18:15:02,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 18:15:02,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 18:15:02,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1275 transitions. [2022-11-25 18:15:02,798 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45633500357909806 [2022-11-25 18:15:02,798 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1275 transitions. [2022-11-25 18:15:02,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1275 transitions. [2022-11-25 18:15:02,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:02,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1275 transitions. [2022-11-25 18:15:02,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 115.9090909090909) internal successors, (1275), 11 states have internal predecessors, (1275), 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 18:15:02,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 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 18:15:02,807 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 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 18:15:02,807 INFO L175 Difference]: Start difference. First operand has 129 places, 204 transitions, 4671 flow. Second operand 11 states and 1275 transitions. [2022-11-25 18:15:02,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 220 transitions, 5157 flow [2022-11-25 18:15:02,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 220 transitions, 4924 flow, removed 7 selfloop flow, removed 10 redundant places. [2022-11-25 18:15:02,930 INFO L231 Difference]: Finished difference. Result has 130 places, 201 transitions, 4371 flow [2022-11-25 18:15:02,931 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=4438, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4371, PETRI_PLACES=130, PETRI_TRANSITIONS=201} [2022-11-25 18:15:02,932 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 91 predicate places. [2022-11-25 18:15:02,932 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 201 transitions, 4371 flow [2022-11-25 18:15:02,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 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 18:15:02,932 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:02,933 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] [2022-11-25 18:15:02,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-25 18:15:02,933 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:15:02,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:02,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1631518113, now seen corresponding path program 28 times [2022-11-25 18:15:02,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:02,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047652211] [2022-11-25 18:15:02,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:02,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:03,248 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 18:15:03,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:03,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047652211] [2022-11-25 18:15:03,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047652211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:03,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:03,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:15:03,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056283683] [2022-11-25 18:15:03,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:03,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:15:03,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:03,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:15:03,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:15:03,304 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 254 [2022-11-25 18:15:03,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 201 transitions, 4371 flow. Second operand has 9 states, 9 states have (on average 114.88888888888889) internal successors, (1034), 9 states have internal predecessors, (1034), 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 18:15:03,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:03,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 254 [2022-11-25 18:15:03,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:03,799 INFO L130 PetriNetUnfolder]: 690/1339 cut-off events. [2022-11-25 18:15:03,799 INFO L131 PetriNetUnfolder]: For 24166/24166 co-relation queries the response was YES. [2022-11-25 18:15:03,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10749 conditions, 1339 events. 690/1339 cut-off events. For 24166/24166 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7546 event pairs, 84 based on Foata normal form. 2/1341 useless extension candidates. Maximal degree in co-relation 10719. Up to 1302 conditions per place. [2022-11-25 18:15:03,814 INFO L137 encePairwiseOnDemand]: 246/254 looper letters, 194 selfloop transitions, 3 changer transitions 17/214 dead transitions. [2022-11-25 18:15:03,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 214 transitions, 4831 flow [2022-11-25 18:15:03,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:15:03,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 18:15:03,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1057 transitions. [2022-11-25 18:15:03,822 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46237970253718286 [2022-11-25 18:15:03,822 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1057 transitions. [2022-11-25 18:15:03,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1057 transitions. [2022-11-25 18:15:03,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:03,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1057 transitions. [2022-11-25 18:15:03,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 117.44444444444444) internal successors, (1057), 9 states have internal predecessors, (1057), 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 18:15:03,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 254.0) internal successors, (2540), 10 states have internal predecessors, (2540), 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 18:15:03,830 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 254.0) internal successors, (2540), 10 states have internal predecessors, (2540), 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 18:15:03,830 INFO L175 Difference]: Start difference. First operand has 130 places, 201 transitions, 4371 flow. Second operand 9 states and 1057 transitions. [2022-11-25 18:15:03,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 214 transitions, 4831 flow [2022-11-25 18:15:03,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 214 transitions, 4738 flow, removed 10 selfloop flow, removed 12 redundant places. [2022-11-25 18:15:03,925 INFO L231 Difference]: Finished difference. Result has 123 places, 194 transitions, 4183 flow [2022-11-25 18:15:03,926 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=4270, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4183, PETRI_PLACES=123, PETRI_TRANSITIONS=194} [2022-11-25 18:15:03,933 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 84 predicate places. [2022-11-25 18:15:03,934 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 194 transitions, 4183 flow [2022-11-25 18:15:03,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.88888888888889) internal successors, (1034), 9 states have internal predecessors, (1034), 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 18:15:03,934 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:03,935 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] [2022-11-25 18:15:03,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-25 18:15:03,935 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:15:03,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:03,936 INFO L85 PathProgramCache]: Analyzing trace with hash -632394021, now seen corresponding path program 29 times [2022-11-25 18:15:03,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:03,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411270479] [2022-11-25 18:15:03,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:03,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:04,197 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 18:15:04,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:04,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411270479] [2022-11-25 18:15:04,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411270479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:04,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:04,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:15:04,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693910010] [2022-11-25 18:15:04,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:04,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:15:04,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:04,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:15:04,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:15:04,221 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 254 [2022-11-25 18:15:04,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 194 transitions, 4183 flow. Second operand has 7 states, 7 states have (on average 116.71428571428571) internal successors, (817), 7 states have internal predecessors, (817), 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 18:15:04,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:04,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 254 [2022-11-25 18:15:04,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:04,634 INFO L130 PetriNetUnfolder]: 517/1062 cut-off events. [2022-11-25 18:15:04,634 INFO L131 PetriNetUnfolder]: For 24504/24504 co-relation queries the response was YES. [2022-11-25 18:15:04,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8024 conditions, 1062 events. 517/1062 cut-off events. For 24504/24504 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6056 event pairs, 36 based on Foata normal form. 68/1130 useless extension candidates. Maximal degree in co-relation 7997. Up to 421 conditions per place. [2022-11-25 18:15:04,641 INFO L137 encePairwiseOnDemand]: 245/254 looper letters, 79 selfloop transitions, 94 changer transitions 12/185 dead transitions. [2022-11-25 18:15:04,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 185 transitions, 3720 flow [2022-11-25 18:15:04,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 18:15:04,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 18:15:04,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 992 transitions. [2022-11-25 18:15:04,644 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4881889763779528 [2022-11-25 18:15:04,644 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 992 transitions. [2022-11-25 18:15:04,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 992 transitions. [2022-11-25 18:15:04,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:04,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 992 transitions. [2022-11-25 18:15:04,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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 18:15:04,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 254.0) internal successors, (2286), 9 states have internal predecessors, (2286), 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 18:15:04,650 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 254.0) internal successors, (2286), 9 states have internal predecessors, (2286), 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 18:15:04,650 INFO L175 Difference]: Start difference. First operand has 123 places, 194 transitions, 4183 flow. Second operand 8 states and 992 transitions. [2022-11-25 18:15:04,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 185 transitions, 3720 flow [2022-11-25 18:15:04,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 185 transitions, 3119 flow, removed 14 selfloop flow, removed 16 redundant places. [2022-11-25 18:15:04,708 INFO L231 Difference]: Finished difference. Result has 104 places, 148 transitions, 2752 flow [2022-11-25 18:15:04,708 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=2415, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2752, PETRI_PLACES=104, PETRI_TRANSITIONS=148} [2022-11-25 18:15:04,709 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 65 predicate places. [2022-11-25 18:15:04,709 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 148 transitions, 2752 flow [2022-11-25 18:15:04,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.71428571428571) internal successors, (817), 7 states have internal predecessors, (817), 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 18:15:04,710 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:04,710 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] [2022-11-25 18:15:04,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-25 18:15:04,710 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:15:04,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:04,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1098075519, now seen corresponding path program 30 times [2022-11-25 18:15:04,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:04,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428426306] [2022-11-25 18:15:04,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:04,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:04,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:04,984 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 18:15:04,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:04,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428426306] [2022-11-25 18:15:04,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428426306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:04,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:04,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:15:04,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639328826] [2022-11-25 18:15:04,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:04,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:15:04,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:04,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:15:04,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:15:05,023 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 254 [2022-11-25 18:15:05,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 148 transitions, 2752 flow. Second operand has 8 states, 8 states have (on average 115.25) internal successors, (922), 8 states have internal predecessors, (922), 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 18:15:05,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:05,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 254 [2022-11-25 18:15:05,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:05,454 INFO L130 PetriNetUnfolder]: 382/791 cut-off events. [2022-11-25 18:15:05,454 INFO L131 PetriNetUnfolder]: For 10045/10045 co-relation queries the response was YES. [2022-11-25 18:15:05,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5650 conditions, 791 events. 382/791 cut-off events. For 10045/10045 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4280 event pairs, 6 based on Foata normal form. 28/819 useless extension candidates. Maximal degree in co-relation 5625. Up to 222 conditions per place. [2022-11-25 18:15:05,461 INFO L137 encePairwiseOnDemand]: 245/254 looper letters, 62 selfloop transitions, 93 changer transitions 19/174 dead transitions. [2022-11-25 18:15:05,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 174 transitions, 2965 flow [2022-11-25 18:15:05,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 18:15:05,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 18:15:05,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1216 transitions. [2022-11-25 18:15:05,464 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47874015748031495 [2022-11-25 18:15:05,465 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1216 transitions. [2022-11-25 18:15:05,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1216 transitions. [2022-11-25 18:15:05,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:05,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1216 transitions. [2022-11-25 18:15:05,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 121.6) internal successors, (1216), 10 states have internal predecessors, (1216), 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 18:15:05,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 254.0) internal successors, (2794), 11 states have internal predecessors, (2794), 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 18:15:05,472 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 254.0) internal successors, (2794), 11 states have internal predecessors, (2794), 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 18:15:05,472 INFO L175 Difference]: Start difference. First operand has 104 places, 148 transitions, 2752 flow. Second operand 10 states and 1216 transitions. [2022-11-25 18:15:05,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 174 transitions, 2965 flow [2022-11-25 18:15:05,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 174 transitions, 2724 flow, removed 22 selfloop flow, removed 6 redundant places. [2022-11-25 18:15:05,521 INFO L231 Difference]: Finished difference. Result has 107 places, 123 transitions, 2106 flow [2022-11-25 18:15:05,521 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=2175, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2106, PETRI_PLACES=107, PETRI_TRANSITIONS=123} [2022-11-25 18:15:05,522 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 68 predicate places. [2022-11-25 18:15:05,522 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 123 transitions, 2106 flow [2022-11-25 18:15:05,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 115.25) internal successors, (922), 8 states have internal predecessors, (922), 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 18:15:05,523 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:05,523 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] [2022-11-25 18:15:05,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-25 18:15:05,523 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:15:05,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:05,524 INFO L85 PathProgramCache]: Analyzing trace with hash 256755087, now seen corresponding path program 31 times [2022-11-25 18:15:05,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:05,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701965418] [2022-11-25 18:15:05,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:05,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:05,790 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 18:15:05,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:05,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701965418] [2022-11-25 18:15:05,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701965418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:05,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:05,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:15:05,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520953898] [2022-11-25 18:15:05,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:05,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:15:05,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:05,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:15:05,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:15:05,849 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 254 [2022-11-25 18:15:05,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 123 transitions, 2106 flow. Second operand has 9 states, 9 states have (on average 114.88888888888889) internal successors, (1034), 9 states have internal predecessors, (1034), 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 18:15:05,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:05,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 254 [2022-11-25 18:15:05,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:06,284 INFO L130 PetriNetUnfolder]: 202/465 cut-off events. [2022-11-25 18:15:06,284 INFO L131 PetriNetUnfolder]: For 6356/6356 co-relation queries the response was YES. [2022-11-25 18:15:06,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3305 conditions, 465 events. 202/465 cut-off events. For 6356/6356 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2439 event pairs, 0 based on Foata normal form. 40/505 useless extension candidates. Maximal degree in co-relation 3281. Up to 115 conditions per place. [2022-11-25 18:15:06,287 INFO L137 encePairwiseOnDemand]: 245/254 looper letters, 50 selfloop transitions, 55 changer transitions 42/147 dead transitions. [2022-11-25 18:15:06,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 147 transitions, 2354 flow [2022-11-25 18:15:06,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 18:15:06,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-25 18:15:06,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1554 transitions. [2022-11-25 18:15:06,295 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47062386432465175 [2022-11-25 18:15:06,295 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1554 transitions. [2022-11-25 18:15:06,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1554 transitions. [2022-11-25 18:15:06,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:06,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1554 transitions. [2022-11-25 18:15:06,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 119.53846153846153) internal successors, (1554), 13 states have internal predecessors, (1554), 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 18:15:06,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 254.0) internal successors, (3556), 14 states have internal predecessors, (3556), 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 18:15:06,304 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 254.0) internal successors, (3556), 14 states have internal predecessors, (3556), 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 18:15:06,304 INFO L175 Difference]: Start difference. First operand has 107 places, 123 transitions, 2106 flow. Second operand 13 states and 1554 transitions. [2022-11-25 18:15:06,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 147 transitions, 2354 flow [2022-11-25 18:15:06,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 147 transitions, 1872 flow, removed 6 selfloop flow, removed 18 redundant places. [2022-11-25 18:15:06,335 INFO L231 Difference]: Finished difference. Result has 101 places, 79 transitions, 1061 flow [2022-11-25 18:15:06,336 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=1376, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1061, PETRI_PLACES=101, PETRI_TRANSITIONS=79} [2022-11-25 18:15:06,336 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 62 predicate places. [2022-11-25 18:15:06,336 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 79 transitions, 1061 flow [2022-11-25 18:15:06,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.88888888888889) internal successors, (1034), 9 states have internal predecessors, (1034), 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 18:15:06,337 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:06,337 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] [2022-11-25 18:15:06,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-25 18:15:06,338 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:15:06,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:06,338 INFO L85 PathProgramCache]: Analyzing trace with hash -511112321, now seen corresponding path program 32 times [2022-11-25 18:15:06,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:06,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436870358] [2022-11-25 18:15:06,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:06,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:06,616 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 18:15:06,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:06,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436870358] [2022-11-25 18:15:06,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436870358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:06,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:06,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:15:06,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101816941] [2022-11-25 18:15:06,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:06,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:15:06,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:06,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:15:06,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:15:06,661 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 254 [2022-11-25 18:15:06,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 79 transitions, 1061 flow. Second operand has 9 states, 9 states have (on average 114.88888888888889) internal successors, (1034), 9 states have internal predecessors, (1034), 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 18:15:06,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:06,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 254 [2022-11-25 18:15:06,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:06,933 INFO L130 PetriNetUnfolder]: 130/307 cut-off events. [2022-11-25 18:15:06,933 INFO L131 PetriNetUnfolder]: For 2606/2606 co-relation queries the response was YES. [2022-11-25 18:15:06,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1837 conditions, 307 events. 130/307 cut-off events. For 2606/2606 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1380 event pairs, 4 based on Foata normal form. 2/309 useless extension candidates. Maximal degree in co-relation 1820. Up to 86 conditions per place. [2022-11-25 18:15:06,936 INFO L137 encePairwiseOnDemand]: 245/254 looper letters, 54 selfloop transitions, 52 changer transitions 5/111 dead transitions. [2022-11-25 18:15:06,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 111 transitions, 1469 flow [2022-11-25 18:15:06,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 18:15:06,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 18:15:06,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1308 transitions. [2022-11-25 18:15:06,940 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4681460272011453 [2022-11-25 18:15:06,940 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1308 transitions. [2022-11-25 18:15:06,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1308 transitions. [2022-11-25 18:15:06,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:06,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1308 transitions. [2022-11-25 18:15:06,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 118.9090909090909) internal successors, (1308), 11 states have internal predecessors, (1308), 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 18:15:06,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 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 18:15:06,947 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 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 18:15:06,947 INFO L175 Difference]: Start difference. First operand has 101 places, 79 transitions, 1061 flow. Second operand 11 states and 1308 transitions. [2022-11-25 18:15:06,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 111 transitions, 1469 flow [2022-11-25 18:15:06,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 111 transitions, 1121 flow, removed 23 selfloop flow, removed 19 redundant places. [2022-11-25 18:15:06,962 INFO L231 Difference]: Finished difference. Result has 90 places, 86 transitions, 990 flow [2022-11-25 18:15:06,962 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=990, PETRI_PLACES=90, PETRI_TRANSITIONS=86} [2022-11-25 18:15:06,963 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 51 predicate places. [2022-11-25 18:15:06,963 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 86 transitions, 990 flow [2022-11-25 18:15:06,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.88888888888889) internal successors, (1034), 9 states have internal predecessors, (1034), 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 18:15:06,963 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:06,964 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] [2022-11-25 18:15:06,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-25 18:15:06,964 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:15:06,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:06,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1826841057, now seen corresponding path program 33 times [2022-11-25 18:15:06,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:06,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456322984] [2022-11-25 18:15:06,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:06,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:07,234 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 18:15:07,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:07,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456322984] [2022-11-25 18:15:07,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456322984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:07,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:07,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:15:07,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163878404] [2022-11-25 18:15:07,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:07,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:15:07,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:07,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:15:07,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:15:07,288 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 254 [2022-11-25 18:15:07,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 86 transitions, 990 flow. Second operand has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 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 18:15:07,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:07,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 254 [2022-11-25 18:15:07,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:07,597 INFO L130 PetriNetUnfolder]: 118/283 cut-off events. [2022-11-25 18:15:07,597 INFO L131 PetriNetUnfolder]: For 1991/1991 co-relation queries the response was YES. [2022-11-25 18:15:07,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1508 conditions, 283 events. 118/283 cut-off events. For 1991/1991 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1232 event pairs, 4 based on Foata normal form. 2/285 useless extension candidates. Maximal degree in co-relation 1494. Up to 198 conditions per place. [2022-11-25 18:15:07,600 INFO L137 encePairwiseOnDemand]: 246/254 looper letters, 78 selfloop transitions, 21 changer transitions 8/107 dead transitions. [2022-11-25 18:15:07,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 107 transitions, 1251 flow [2022-11-25 18:15:07,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 18:15:07,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-25 18:15:07,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1509 transitions. [2022-11-25 18:15:07,604 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45699576014536647 [2022-11-25 18:15:07,604 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1509 transitions. [2022-11-25 18:15:07,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1509 transitions. [2022-11-25 18:15:07,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:07,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1509 transitions. [2022-11-25 18:15:07,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.07692307692308) internal successors, (1509), 13 states have internal predecessors, (1509), 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 18:15:07,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 254.0) internal successors, (3556), 14 states have internal predecessors, (3556), 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 18:15:07,612 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 254.0) internal successors, (3556), 14 states have internal predecessors, (3556), 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 18:15:07,612 INFO L175 Difference]: Start difference. First operand has 90 places, 86 transitions, 990 flow. Second operand 13 states and 1509 transitions. [2022-11-25 18:15:07,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 107 transitions, 1251 flow [2022-11-25 18:15:07,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 107 transitions, 1148 flow, removed 6 selfloop flow, removed 8 redundant places. [2022-11-25 18:15:07,624 INFO L231 Difference]: Finished difference. Result has 94 places, 82 transitions, 869 flow [2022-11-25 18:15:07,624 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=869, PETRI_PLACES=94, PETRI_TRANSITIONS=82} [2022-11-25 18:15:07,625 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 55 predicate places. [2022-11-25 18:15:07,625 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 82 transitions, 869 flow [2022-11-25 18:15:07,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 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 18:15:07,626 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:07,626 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] [2022-11-25 18:15:07,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-25 18:15:07,626 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:15:07,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:07,627 INFO L85 PathProgramCache]: Analyzing trace with hash -2090934065, now seen corresponding path program 34 times [2022-11-25 18:15:07,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:07,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412420513] [2022-11-25 18:15:07,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:07,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:07,913 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 18:15:07,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:07,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412420513] [2022-11-25 18:15:07,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412420513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:07,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:07,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:15:07,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940758588] [2022-11-25 18:15:07,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:07,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:15:07,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:07,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:15:07,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:15:07,956 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 254 [2022-11-25 18:15:07,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 82 transitions, 869 flow. Second operand has 9 states, 9 states have (on average 114.88888888888889) internal successors, (1034), 9 states have internal predecessors, (1034), 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 18:15:07,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:07,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 254 [2022-11-25 18:15:07,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:08,233 INFO L130 PetriNetUnfolder]: 114/277 cut-off events. [2022-11-25 18:15:08,233 INFO L131 PetriNetUnfolder]: For 1257/1257 co-relation queries the response was YES. [2022-11-25 18:15:08,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1416 conditions, 277 events. 114/277 cut-off events. For 1257/1257 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1218 event pairs, 4 based on Foata normal form. 2/279 useless extension candidates. Maximal degree in co-relation 1403. Up to 210 conditions per place. [2022-11-25 18:15:08,235 INFO L137 encePairwiseOnDemand]: 246/254 looper letters, 78 selfloop transitions, 15 changer transitions 10/103 dead transitions. [2022-11-25 18:15:08,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 103 transitions, 1164 flow [2022-11-25 18:15:08,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 18:15:08,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 18:15:08,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1404 transitions. [2022-11-25 18:15:08,239 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46062992125984253 [2022-11-25 18:15:08,239 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1404 transitions. [2022-11-25 18:15:08,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1404 transitions. [2022-11-25 18:15:08,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:08,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1404 transitions. [2022-11-25 18:15:08,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 117.0) internal successors, (1404), 12 states have internal predecessors, (1404), 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 18:15:08,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 254.0) internal successors, (3302), 13 states have internal predecessors, (3302), 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 18:15:08,246 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 254.0) internal successors, (3302), 13 states have internal predecessors, (3302), 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 18:15:08,246 INFO L175 Difference]: Start difference. First operand has 94 places, 82 transitions, 869 flow. Second operand 12 states and 1404 transitions. [2022-11-25 18:15:08,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 103 transitions, 1164 flow [2022-11-25 18:15:08,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 103 transitions, 1109 flow, removed 1 selfloop flow, removed 11 redundant places. [2022-11-25 18:15:08,256 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 842 flow [2022-11-25 18:15:08,257 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=842, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2022-11-25 18:15:08,257 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 53 predicate places. [2022-11-25 18:15:08,257 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 842 flow [2022-11-25 18:15:08,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.88888888888889) internal successors, (1034), 9 states have internal predecessors, (1034), 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 18:15:08,258 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:08,258 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] [2022-11-25 18:15:08,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-25 18:15:08,258 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:15:08,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:08,259 INFO L85 PathProgramCache]: Analyzing trace with hash 2104078899, now seen corresponding path program 35 times [2022-11-25 18:15:08,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:08,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015797357] [2022-11-25 18:15:08,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:08,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:08,560 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 18:15:08,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:08,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015797357] [2022-11-25 18:15:08,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015797357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:08,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:08,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:15:08,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125769437] [2022-11-25 18:15:08,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:08,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:15:08,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:08,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:15:08,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:15:08,602 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 254 [2022-11-25 18:15:08,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 842 flow. Second operand has 9 states, 9 states have (on average 114.88888888888889) internal successors, (1034), 9 states have internal predecessors, (1034), 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 18:15:08,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:08,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 254 [2022-11-25 18:15:08,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:08,845 INFO L130 PetriNetUnfolder]: 103/254 cut-off events. [2022-11-25 18:15:08,845 INFO L131 PetriNetUnfolder]: For 1071/1071 co-relation queries the response was YES. [2022-11-25 18:15:08,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 254 events. 103/254 cut-off events. For 1071/1071 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1092 event pairs, 4 based on Foata normal form. 4/258 useless extension candidates. Maximal degree in co-relation 1276. Up to 84 conditions per place. [2022-11-25 18:15:08,847 INFO L137 encePairwiseOnDemand]: 244/254 looper letters, 46 selfloop transitions, 43 changer transitions 5/94 dead transitions. [2022-11-25 18:15:08,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 94 transitions, 1065 flow [2022-11-25 18:15:08,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 18:15:08,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 18:15:08,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1186 transitions. [2022-11-25 18:15:08,850 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46692913385826773 [2022-11-25 18:15:08,851 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1186 transitions. [2022-11-25 18:15:08,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1186 transitions. [2022-11-25 18:15:08,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:08,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1186 transitions. [2022-11-25 18:15:08,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 118.6) internal successors, (1186), 10 states have internal predecessors, (1186), 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 18:15:08,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 254.0) internal successors, (2794), 11 states have internal predecessors, (2794), 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 18:15:08,857 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 254.0) internal successors, (2794), 11 states have internal predecessors, (2794), 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 18:15:08,857 INFO L175 Difference]: Start difference. First operand has 92 places, 80 transitions, 842 flow. Second operand 10 states and 1186 transitions. [2022-11-25 18:15:08,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 94 transitions, 1065 flow [2022-11-25 18:15:08,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 94 transitions, 1029 flow, removed 1 selfloop flow, removed 9 redundant places. [2022-11-25 18:15:08,866 INFO L231 Difference]: Finished difference. Result has 89 places, 75 transitions, 819 flow [2022-11-25 18:15:08,867 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=819, PETRI_PLACES=89, PETRI_TRANSITIONS=75} [2022-11-25 18:15:08,867 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 50 predicate places. [2022-11-25 18:15:08,867 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 75 transitions, 819 flow [2022-11-25 18:15:08,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.88888888888889) internal successors, (1034), 9 states have internal predecessors, (1034), 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 18:15:08,868 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:08,868 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] [2022-11-25 18:15:08,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-25 18:15:08,868 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:15:08,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:08,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1798425813, now seen corresponding path program 36 times [2022-11-25 18:15:08,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:08,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911411522] [2022-11-25 18:15:08,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:08,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:09,129 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 18:15:09,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:09,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911411522] [2022-11-25 18:15:09,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911411522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:09,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:09,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:15:09,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344337218] [2022-11-25 18:15:09,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:09,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:15:09,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:09,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:15:09,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:15:09,155 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 254 [2022-11-25 18:15:09,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 75 transitions, 819 flow. Second operand has 9 states, 9 states have (on average 115.88888888888889) internal successors, (1043), 9 states have internal predecessors, (1043), 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 18:15:09,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:09,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 254 [2022-11-25 18:15:09,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:09,383 INFO L130 PetriNetUnfolder]: 97/252 cut-off events. [2022-11-25 18:15:09,383 INFO L131 PetriNetUnfolder]: For 1409/1409 co-relation queries the response was YES. [2022-11-25 18:15:09,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 252 events. 97/252 cut-off events. For 1409/1409 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1122 event pairs, 4 based on Foata normal form. 8/260 useless extension candidates. Maximal degree in co-relation 1360. Up to 125 conditions per place. [2022-11-25 18:15:09,384 INFO L137 encePairwiseOnDemand]: 245/254 looper letters, 48 selfloop transitions, 27 changer transitions 17/92 dead transitions. [2022-11-25 18:15:09,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 92 transitions, 1126 flow [2022-11-25 18:15:09,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 18:15:09,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 18:15:09,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1192 transitions. [2022-11-25 18:15:09,388 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4692913385826772 [2022-11-25 18:15:09,388 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1192 transitions. [2022-11-25 18:15:09,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1192 transitions. [2022-11-25 18:15:09,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:09,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1192 transitions. [2022-11-25 18:15:09,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 119.2) internal successors, (1192), 10 states have internal predecessors, (1192), 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 18:15:09,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 254.0) internal successors, (2794), 11 states have internal predecessors, (2794), 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 18:15:09,395 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 254.0) internal successors, (2794), 11 states have internal predecessors, (2794), 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 18:15:09,395 INFO L175 Difference]: Start difference. First operand has 89 places, 75 transitions, 819 flow. Second operand 10 states and 1192 transitions. [2022-11-25 18:15:09,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 92 transitions, 1126 flow [2022-11-25 18:15:09,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 92 transitions, 976 flow, removed 2 selfloop flow, removed 11 redundant places. [2022-11-25 18:15:09,404 INFO L231 Difference]: Finished difference. Result has 88 places, 67 transitions, 684 flow [2022-11-25 18:15:09,405 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=684, PETRI_PLACES=88, PETRI_TRANSITIONS=67} [2022-11-25 18:15:09,405 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 49 predicate places. [2022-11-25 18:15:09,406 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 67 transitions, 684 flow [2022-11-25 18:15:09,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 115.88888888888889) internal successors, (1043), 9 states have internal predecessors, (1043), 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 18:15:09,406 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:09,406 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] [2022-11-25 18:15:09,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-25 18:15:09,407 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:15:09,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:09,407 INFO L85 PathProgramCache]: Analyzing trace with hash -197063345, now seen corresponding path program 37 times [2022-11-25 18:15:09,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:09,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295923687] [2022-11-25 18:15:09,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:09,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:09,678 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 18:15:09,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:09,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295923687] [2022-11-25 18:15:09,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295923687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:09,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:09,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:15:09,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994280043] [2022-11-25 18:15:09,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:09,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:15:09,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:09,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:15:09,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:15:09,719 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 254 [2022-11-25 18:15:09,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 67 transitions, 684 flow. Second operand has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 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 18:15:09,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:09,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 254 [2022-11-25 18:15:09,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:09,932 INFO L130 PetriNetUnfolder]: 78/201 cut-off events. [2022-11-25 18:15:09,933 INFO L131 PetriNetUnfolder]: For 779/779 co-relation queries the response was YES. [2022-11-25 18:15:09,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1072 conditions, 201 events. 78/201 cut-off events. For 779/779 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 782 event pairs, 4 based on Foata normal form. 2/203 useless extension candidates. Maximal degree in co-relation 1059. Up to 168 conditions per place. [2022-11-25 18:15:09,934 INFO L137 encePairwiseOnDemand]: 246/254 looper letters, 63 selfloop transitions, 6 changer transitions 7/76 dead transitions. [2022-11-25 18:15:09,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 76 transitions, 859 flow [2022-11-25 18:15:09,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:15:09,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 18:15:09,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1043 transitions. [2022-11-25 18:15:09,937 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4562554680664917 [2022-11-25 18:15:09,937 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1043 transitions. [2022-11-25 18:15:09,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1043 transitions. [2022-11-25 18:15:09,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:09,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1043 transitions. [2022-11-25 18:15:09,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 115.88888888888889) internal successors, (1043), 9 states have internal predecessors, (1043), 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 18:15:09,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 254.0) internal successors, (2540), 10 states have internal predecessors, (2540), 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 18:15:09,943 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 254.0) internal successors, (2540), 10 states have internal predecessors, (2540), 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 18:15:09,944 INFO L175 Difference]: Start difference. First operand has 88 places, 67 transitions, 684 flow. Second operand 9 states and 1043 transitions. [2022-11-25 18:15:09,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 76 transitions, 859 flow [2022-11-25 18:15:09,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 76 transitions, 729 flow, removed 4 selfloop flow, removed 12 redundant places. [2022-11-25 18:15:09,952 INFO L231 Difference]: Finished difference. Result has 78 places, 63 transitions, 527 flow [2022-11-25 18:15:09,953 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=527, PETRI_PLACES=78, PETRI_TRANSITIONS=63} [2022-11-25 18:15:09,954 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 39 predicate places. [2022-11-25 18:15:09,954 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 63 transitions, 527 flow [2022-11-25 18:15:09,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 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 18:15:09,954 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:09,955 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] [2022-11-25 18:15:09,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-25 18:15:09,955 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:15:09,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:09,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1459654963, now seen corresponding path program 38 times [2022-11-25 18:15:09,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:09,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143892745] [2022-11-25 18:15:09,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:09,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:10,219 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 18:15:10,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:10,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143892745] [2022-11-25 18:15:10,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143892745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:10,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:10,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:15:10,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582746919] [2022-11-25 18:15:10,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:10,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:15:10,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:10,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:15:10,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:15:10,269 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 254 [2022-11-25 18:15:10,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 63 transitions, 527 flow. Second operand has 9 states, 9 states have (on average 114.88888888888889) internal successors, (1034), 9 states have internal predecessors, (1034), 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 18:15:10,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:10,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 254 [2022-11-25 18:15:10,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:10,474 INFO L130 PetriNetUnfolder]: 71/184 cut-off events. [2022-11-25 18:15:10,474 INFO L131 PetriNetUnfolder]: For 415/415 co-relation queries the response was YES. [2022-11-25 18:15:10,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 828 conditions, 184 events. 71/184 cut-off events. For 415/415 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 677 event pairs, 0 based on Foata normal form. 2/186 useless extension candidates. Maximal degree in co-relation 817. Up to 78 conditions per place. [2022-11-25 18:15:10,476 INFO L137 encePairwiseOnDemand]: 246/254 looper letters, 40 selfloop transitions, 30 changer transitions 3/73 dead transitions. [2022-11-25 18:15:10,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 73 transitions, 691 flow [2022-11-25 18:15:10,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:15:10,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 18:15:10,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1061 transitions. [2022-11-25 18:15:10,478 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4641294838145232 [2022-11-25 18:15:10,479 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1061 transitions. [2022-11-25 18:15:10,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1061 transitions. [2022-11-25 18:15:10,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:10,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1061 transitions. [2022-11-25 18:15:10,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 117.88888888888889) internal successors, (1061), 9 states have internal predecessors, (1061), 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 18:15:10,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 254.0) internal successors, (2540), 10 states have internal predecessors, (2540), 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 18:15:10,484 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 254.0) internal successors, (2540), 10 states have internal predecessors, (2540), 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 18:15:10,485 INFO L175 Difference]: Start difference. First operand has 78 places, 63 transitions, 527 flow. Second operand 9 states and 1061 transitions. [2022-11-25 18:15:10,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 73 transitions, 691 flow [2022-11-25 18:15:10,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 675 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-25 18:15:10,490 INFO L231 Difference]: Finished difference. Result has 75 places, 59 transitions, 528 flow [2022-11-25 18:15:10,490 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=528, PETRI_PLACES=75, PETRI_TRANSITIONS=59} [2022-11-25 18:15:10,491 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 36 predicate places. [2022-11-25 18:15:10,491 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 59 transitions, 528 flow [2022-11-25 18:15:10,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.88888888888889) internal successors, (1034), 9 states have internal predecessors, (1034), 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 18:15:10,491 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:10,492 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] [2022-11-25 18:15:10,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-25 18:15:10,492 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:15:10,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:10,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1174844361, now seen corresponding path program 39 times [2022-11-25 18:15:10,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:10,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288328067] [2022-11-25 18:15:10,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:10,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:10,765 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 18:15:10,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:10,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288328067] [2022-11-25 18:15:10,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288328067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:10,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:10,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:15:10,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016242027] [2022-11-25 18:15:10,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:10,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:15:10,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:10,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:15:10,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:15:10,805 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 254 [2022-11-25 18:15:10,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 59 transitions, 528 flow. Second operand has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 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 18:15:10,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:10,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 254 [2022-11-25 18:15:10,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:11,018 INFO L130 PetriNetUnfolder]: 65/174 cut-off events. [2022-11-25 18:15:11,018 INFO L131 PetriNetUnfolder]: For 465/465 co-relation queries the response was YES. [2022-11-25 18:15:11,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 820 conditions, 174 events. 65/174 cut-off events. For 465/465 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 624 event pairs, 2 based on Foata normal form. 2/176 useless extension candidates. Maximal degree in co-relation 809. Up to 141 conditions per place. [2022-11-25 18:15:11,020 INFO L137 encePairwiseOnDemand]: 246/254 looper letters, 52 selfloop transitions, 2 changer transitions 15/69 dead transitions. [2022-11-25 18:15:11,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 69 transitions, 692 flow [2022-11-25 18:15:11,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:15:11,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 18:15:11,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1042 transitions. [2022-11-25 18:15:11,022 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4558180227471566 [2022-11-25 18:15:11,023 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1042 transitions. [2022-11-25 18:15:11,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1042 transitions. [2022-11-25 18:15:11,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:11,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1042 transitions. [2022-11-25 18:15:11,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 115.77777777777777) internal successors, (1042), 9 states have internal predecessors, (1042), 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 18:15:11,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 254.0) internal successors, (2540), 10 states have internal predecessors, (2540), 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 18:15:11,028 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 254.0) internal successors, (2540), 10 states have internal predecessors, (2540), 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 18:15:11,028 INFO L175 Difference]: Start difference. First operand has 75 places, 59 transitions, 528 flow. Second operand 9 states and 1042 transitions. [2022-11-25 18:15:11,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 69 transitions, 692 flow [2022-11-25 18:15:11,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 69 transitions, 592 flow, removed 6 selfloop flow, removed 9 redundant places. [2022-11-25 18:15:11,033 INFO L231 Difference]: Finished difference. Result has 75 places, 53 transitions, 377 flow [2022-11-25 18:15:11,033 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=377, PETRI_PLACES=75, PETRI_TRANSITIONS=53} [2022-11-25 18:15:11,034 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 36 predicate places. [2022-11-25 18:15:11,034 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 53 transitions, 377 flow [2022-11-25 18:15:11,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 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 18:15:11,034 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:11,035 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] [2022-11-25 18:15:11,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-25 18:15:11,035 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:15:11,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:11,036 INFO L85 PathProgramCache]: Analyzing trace with hash 312897097, now seen corresponding path program 40 times [2022-11-25 18:15:11,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:11,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541387590] [2022-11-25 18:15:11,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:11,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:11,266 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 18:15:11,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:11,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541387590] [2022-11-25 18:15:11,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541387590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:11,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:11,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:15:11,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636010286] [2022-11-25 18:15:11,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:11,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:15:11,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:11,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:15:11,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:15:11,305 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 254 [2022-11-25 18:15:11,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 53 transitions, 377 flow. Second operand has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 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 18:15:11,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:11,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 254 [2022-11-25 18:15:11,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:11,498 INFO L130 PetriNetUnfolder]: 55/154 cut-off events. [2022-11-25 18:15:11,498 INFO L131 PetriNetUnfolder]: For 252/252 co-relation queries the response was YES. [2022-11-25 18:15:11,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 154 events. 55/154 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 555 event pairs, 0 based on Foata normal form. 4/158 useless extension candidates. Maximal degree in co-relation 602. Up to 47 conditions per place. [2022-11-25 18:15:11,499 INFO L137 encePairwiseOnDemand]: 244/254 looper letters, 30 selfloop transitions, 24 changer transitions 9/63 dead transitions. [2022-11-25 18:15:11,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 63 transitions, 532 flow [2022-11-25 18:15:11,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 18:15:11,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 18:15:11,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1159 transitions. [2022-11-25 18:15:11,502 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4562992125984252 [2022-11-25 18:15:11,502 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1159 transitions. [2022-11-25 18:15:11,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1159 transitions. [2022-11-25 18:15:11,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:11,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1159 transitions. [2022-11-25 18:15:11,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 115.9) internal successors, (1159), 10 states have internal predecessors, (1159), 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 18:15:11,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 254.0) internal successors, (2794), 11 states have internal predecessors, (2794), 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 18:15:11,508 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 254.0) internal successors, (2794), 11 states have internal predecessors, (2794), 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 18:15:11,509 INFO L175 Difference]: Start difference. First operand has 75 places, 53 transitions, 377 flow. Second operand 10 states and 1159 transitions. [2022-11-25 18:15:11,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 63 transitions, 532 flow [2022-11-25 18:15:11,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 63 transitions, 482 flow, removed 1 selfloop flow, removed 8 redundant places. [2022-11-25 18:15:11,512 INFO L231 Difference]: Finished difference. Result has 68 places, 47 transitions, 340 flow [2022-11-25 18:15:11,513 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=340, PETRI_PLACES=68, PETRI_TRANSITIONS=47} [2022-11-25 18:15:11,513 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 29 predicate places. [2022-11-25 18:15:11,513 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 47 transitions, 340 flow [2022-11-25 18:15:11,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 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 18:15:11,514 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:11,514 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] [2022-11-25 18:15:11,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-25 18:15:11,514 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:15:11,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:11,515 INFO L85 PathProgramCache]: Analyzing trace with hash -12106235, now seen corresponding path program 41 times [2022-11-25 18:15:11,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:11,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116491047] [2022-11-25 18:15:11,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:11,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:11,782 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 18:15:11,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:11,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116491047] [2022-11-25 18:15:11,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116491047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:11,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:11,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:15:11,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217295954] [2022-11-25 18:15:11,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:11,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:15:11,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:11,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:15:11,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:15:11,843 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 254 [2022-11-25 18:15:11,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 47 transitions, 340 flow. Second operand has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 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 18:15:11,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:11,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 254 [2022-11-25 18:15:11,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:12,088 INFO L130 PetriNetUnfolder]: 45/128 cut-off events. [2022-11-25 18:15:12,088 INFO L131 PetriNetUnfolder]: For 285/285 co-relation queries the response was YES. [2022-11-25 18:15:12,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 552 conditions, 128 events. 45/128 cut-off events. For 285/285 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 404 event pairs, 4 based on Foata normal form. 2/130 useless extension candidates. Maximal degree in co-relation 541. Up to 90 conditions per place. [2022-11-25 18:15:12,089 INFO L137 encePairwiseOnDemand]: 246/254 looper letters, 41 selfloop transitions, 9 changer transitions 7/57 dead transitions. [2022-11-25 18:15:12,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 57 transitions, 480 flow [2022-11-25 18:15:12,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 18:15:12,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 18:15:12,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1266 transitions. [2022-11-25 18:15:12,093 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4531138153185397 [2022-11-25 18:15:12,093 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1266 transitions. [2022-11-25 18:15:12,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1266 transitions. [2022-11-25 18:15:12,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:12,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1266 transitions. [2022-11-25 18:15:12,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 115.0909090909091) internal successors, (1266), 11 states have internal predecessors, (1266), 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 18:15:12,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 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 18:15:12,099 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 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 18:15:12,099 INFO L175 Difference]: Start difference. First operand has 68 places, 47 transitions, 340 flow. Second operand 11 states and 1266 transitions. [2022-11-25 18:15:12,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 57 transitions, 480 flow [2022-11-25 18:15:12,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 57 transitions, 449 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-11-25 18:15:12,103 INFO L231 Difference]: Finished difference. Result has 66 places, 44 transitions, 299 flow [2022-11-25 18:15:12,103 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=299, PETRI_PLACES=66, PETRI_TRANSITIONS=44} [2022-11-25 18:15:12,104 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 27 predicate places. [2022-11-25 18:15:12,104 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 44 transitions, 299 flow [2022-11-25 18:15:12,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 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 18:15:12,105 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:12,105 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] [2022-11-25 18:15:12,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-25 18:15:12,105 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:15:12,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:12,106 INFO L85 PathProgramCache]: Analyzing trace with hash 283636677, now seen corresponding path program 42 times [2022-11-25 18:15:12,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:12,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775460787] [2022-11-25 18:15:12,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:12,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:12,362 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 18:15:12,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:12,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775460787] [2022-11-25 18:15:12,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775460787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:12,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:12,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:15:12,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649630247] [2022-11-25 18:15:12,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:12,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:15:12,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:12,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:15:12,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:15:12,422 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 254 [2022-11-25 18:15:12,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 44 transitions, 299 flow. Second operand has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 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 18:15:12,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:12,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 254 [2022-11-25 18:15:12,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:12,669 INFO L130 PetriNetUnfolder]: 38/111 cut-off events. [2022-11-25 18:15:12,669 INFO L131 PetriNetUnfolder]: For 169/169 co-relation queries the response was YES. [2022-11-25 18:15:12,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 111 events. 38/111 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 309 event pairs, 4 based on Foata normal form. 2/113 useless extension candidates. Maximal degree in co-relation 452. Up to 76 conditions per place. [2022-11-25 18:15:12,670 INFO L137 encePairwiseOnDemand]: 246/254 looper letters, 37 selfloop transitions, 8 changer transitions 7/52 dead transitions. [2022-11-25 18:15:12,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 52 transitions, 416 flow [2022-11-25 18:15:12,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 18:15:12,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 18:15:12,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1265 transitions. [2022-11-25 18:15:12,673 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.452755905511811 [2022-11-25 18:15:12,673 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1265 transitions. [2022-11-25 18:15:12,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1265 transitions. [2022-11-25 18:15:12,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:12,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1265 transitions. [2022-11-25 18:15:12,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 115.0) internal successors, (1265), 11 states have internal predecessors, (1265), 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 18:15:12,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 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 18:15:12,679 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 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 18:15:12,679 INFO L175 Difference]: Start difference. First operand has 66 places, 44 transitions, 299 flow. Second operand 11 states and 1265 transitions. [2022-11-25 18:15:12,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 52 transitions, 416 flow [2022-11-25 18:15:12,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 52 transitions, 366 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-11-25 18:15:12,682 INFO L231 Difference]: Finished difference. Result has 61 places, 39 transitions, 229 flow [2022-11-25 18:15:12,682 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=229, PETRI_PLACES=61, PETRI_TRANSITIONS=39} [2022-11-25 18:15:12,683 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 22 predicate places. [2022-11-25 18:15:12,683 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 39 transitions, 229 flow [2022-11-25 18:15:12,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 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 18:15:12,684 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:12,684 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] [2022-11-25 18:15:12,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-25 18:15:12,684 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:15:12,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:12,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1302961771, now seen corresponding path program 43 times [2022-11-25 18:15:12,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:12,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939317769] [2022-11-25 18:15:12,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:12,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:12,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:12,932 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 18:15:12,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:12,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939317769] [2022-11-25 18:15:12,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939317769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:12,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:12,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:15:12,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229858919] [2022-11-25 18:15:12,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:12,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:15:12,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:12,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:15:12,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:15:12,966 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 254 [2022-11-25 18:15:12,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 39 transitions, 229 flow. Second operand has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 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 18:15:12,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:12,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 254 [2022-11-25 18:15:12,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:13,168 INFO L130 PetriNetUnfolder]: 32/97 cut-off events. [2022-11-25 18:15:13,169 INFO L131 PetriNetUnfolder]: For 105/105 co-relation queries the response was YES. [2022-11-25 18:15:13,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 97 events. 32/97 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 247 event pairs, 0 based on Foata normal form. 2/99 useless extension candidates. Maximal degree in co-relation 362. Up to 27 conditions per place. [2022-11-25 18:15:13,169 INFO L137 encePairwiseOnDemand]: 245/254 looper letters, 29 selfloop transitions, 17 changer transitions 3/49 dead transitions. [2022-11-25 18:15:13,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 49 transitions, 346 flow [2022-11-25 18:15:13,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 18:15:13,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 18:15:13,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1269 transitions. [2022-11-25 18:15:13,172 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45418754473872586 [2022-11-25 18:15:13,173 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1269 transitions. [2022-11-25 18:15:13,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1269 transitions. [2022-11-25 18:15:13,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:13,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1269 transitions. [2022-11-25 18:15:13,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 115.36363636363636) internal successors, (1269), 11 states have internal predecessors, (1269), 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 18:15:13,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 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 18:15:13,179 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 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 18:15:13,179 INFO L175 Difference]: Start difference. First operand has 61 places, 39 transitions, 229 flow. Second operand 11 states and 1269 transitions. [2022-11-25 18:15:13,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 49 transitions, 346 flow [2022-11-25 18:15:13,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 49 transitions, 307 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-11-25 18:15:13,182 INFO L231 Difference]: Finished difference. Result has 56 places, 36 transitions, 197 flow [2022-11-25 18:15:13,182 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=197, PETRI_PLACES=56, PETRI_TRANSITIONS=36} [2022-11-25 18:15:13,183 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 17 predicate places. [2022-11-25 18:15:13,183 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 36 transitions, 197 flow [2022-11-25 18:15:13,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 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 18:15:13,183 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:13,184 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] [2022-11-25 18:15:13,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-25 18:15:13,184 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:15:13,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:13,185 INFO L85 PathProgramCache]: Analyzing trace with hash -334640769, now seen corresponding path program 44 times [2022-11-25 18:15:13,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:13,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869617752] [2022-11-25 18:15:13,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:13,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:13,432 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 18:15:13,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:13,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869617752] [2022-11-25 18:15:13,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869617752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:13,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:13,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:15:13,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000378301] [2022-11-25 18:15:13,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:13,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:15:13,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:13,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:15:13,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:15:13,465 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 254 [2022-11-25 18:15:13,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 36 transitions, 197 flow. Second operand has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 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 18:15:13,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:13,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 254 [2022-11-25 18:15:13,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:13,678 INFO L130 PetriNetUnfolder]: 23/78 cut-off events. [2022-11-25 18:15:13,678 INFO L131 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2022-11-25 18:15:13,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 78 events. 23/78 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 157 event pairs, 0 based on Foata normal form. 2/80 useless extension candidates. Maximal degree in co-relation 280. Up to 20 conditions per place. [2022-11-25 18:15:13,679 INFO L137 encePairwiseOnDemand]: 246/254 looper letters, 28 selfloop transitions, 13 changer transitions 3/44 dead transitions. [2022-11-25 18:15:13,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 44 transitions, 288 flow [2022-11-25 18:15:13,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 18:15:13,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 18:15:13,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1266 transitions. [2022-11-25 18:15:13,682 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4531138153185397 [2022-11-25 18:15:13,682 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1266 transitions. [2022-11-25 18:15:13,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1266 transitions. [2022-11-25 18:15:13,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:13,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1266 transitions. [2022-11-25 18:15:13,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 115.0909090909091) internal successors, (1266), 11 states have internal predecessors, (1266), 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 18:15:13,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 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 18:15:13,693 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 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 18:15:13,694 INFO L175 Difference]: Start difference. First operand has 56 places, 36 transitions, 197 flow. Second operand 11 states and 1266 transitions. [2022-11-25 18:15:13,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 44 transitions, 288 flow [2022-11-25 18:15:13,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 44 transitions, 252 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-25 18:15:13,696 INFO L231 Difference]: Finished difference. Result has 55 places, 32 transitions, 151 flow [2022-11-25 18:15:13,696 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=151, PETRI_PLACES=55, PETRI_TRANSITIONS=32} [2022-11-25 18:15:13,696 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 16 predicate places. [2022-11-25 18:15:13,697 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 32 transitions, 151 flow [2022-11-25 18:15:13,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 states have internal predecessors, (1025), 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 18:15:13,697 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:13,697 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] [2022-11-25 18:15:13,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-25 18:15:13,698 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:15:13,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:13,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1571957089, now seen corresponding path program 45 times [2022-11-25 18:15:13,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:13,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100379028] [2022-11-25 18:15:13,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:13,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:13,991 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 18:15:13,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:13,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100379028] [2022-11-25 18:15:13,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100379028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:13,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:13,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:15:13,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24784661] [2022-11-25 18:15:13,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:13,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:15:13,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:13,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:15:13,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:15:14,057 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 254 [2022-11-25 18:15:14,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 32 transitions, 151 flow. Second operand has 9 states, 9 states have (on average 114.88888888888889) internal successors, (1034), 9 states have internal predecessors, (1034), 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 18:15:14,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:14,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 254 [2022-11-25 18:15:14,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:14,260 INFO L130 PetriNetUnfolder]: 15/62 cut-off events. [2022-11-25 18:15:14,260 INFO L131 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2022-11-25 18:15:14,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 62 events. 15/62 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 94 event pairs, 0 based on Foata normal form. 2/64 useless extension candidates. Maximal degree in co-relation 204. Up to 21 conditions per place. [2022-11-25 18:15:14,260 INFO L137 encePairwiseOnDemand]: 246/254 looper letters, 25 selfloop transitions, 6 changer transitions 10/41 dead transitions. [2022-11-25 18:15:14,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 41 transitions, 247 flow [2022-11-25 18:15:14,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 18:15:14,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 18:15:14,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1274 transitions. [2022-11-25 18:15:14,263 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4559770937723694 [2022-11-25 18:15:14,263 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1274 transitions. [2022-11-25 18:15:14,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1274 transitions. [2022-11-25 18:15:14,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:14,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1274 transitions. [2022-11-25 18:15:14,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 115.81818181818181) internal successors, (1274), 11 states have internal predecessors, (1274), 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 18:15:14,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 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 18:15:14,266 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 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 18:15:14,267 INFO L175 Difference]: Start difference. First operand has 55 places, 32 transitions, 151 flow. Second operand 11 states and 1274 transitions. [2022-11-25 18:15:14,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 41 transitions, 247 flow [2022-11-25 18:15:14,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 41 transitions, 184 flow, removed 2 selfloop flow, removed 19 redundant places. [2022-11-25 18:15:14,268 INFO L231 Difference]: Finished difference. Result has 46 places, 26 transitions, 76 flow [2022-11-25 18:15:14,268 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=76, PETRI_PLACES=46, PETRI_TRANSITIONS=26} [2022-11-25 18:15:14,268 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2022-11-25 18:15:14,268 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 26 transitions, 76 flow [2022-11-25 18:15:14,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.88888888888889) internal successors, (1034), 9 states have internal predecessors, (1034), 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 18:15:14,269 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:14,269 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] [2022-11-25 18:15:14,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-25 18:15:14,269 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 18:15:14,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:14,270 INFO L85 PathProgramCache]: Analyzing trace with hash 594766293, now seen corresponding path program 46 times [2022-11-25 18:15:14,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:15:14,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304020113] [2022-11-25 18:15:14,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:14,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:15:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:14,534 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 18:15:14,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:15:14,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304020113] [2022-11-25 18:15:14,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304020113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:14,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:14,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:15:14,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583255899] [2022-11-25 18:15:14,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:14,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:15:14,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:15:14,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:15:14,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:15:14,586 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 254 [2022-11-25 18:15:14,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 26 transitions, 76 flow. Second operand has 9 states, 9 states have (on average 114.88888888888889) internal successors, (1034), 9 states have internal predecessors, (1034), 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 18:15:14,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:14,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 254 [2022-11-25 18:15:14,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:14,689 INFO L130 PetriNetUnfolder]: 7/30 cut-off events. [2022-11-25 18:15:14,689 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 18:15:14,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 30 events. 7/30 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 2/32 useless extension candidates. Maximal degree in co-relation 80. Up to 9 conditions per place. [2022-11-25 18:15:14,690 INFO L137 encePairwiseOnDemand]: 246/254 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2022-11-25 18:15:14,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 22 transitions, 110 flow [2022-11-25 18:15:14,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:15:14,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 18:15:14,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1031 transitions. [2022-11-25 18:15:14,692 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4510061242344707 [2022-11-25 18:15:14,692 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1031 transitions. [2022-11-25 18:15:14,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1031 transitions. [2022-11-25 18:15:14,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:14,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1031 transitions. [2022-11-25 18:15:14,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 114.55555555555556) internal successors, (1031), 9 states have internal predecessors, (1031), 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 18:15:14,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 254.0) internal successors, (2540), 10 states have internal predecessors, (2540), 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 18:15:14,697 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 254.0) internal successors, (2540), 10 states have internal predecessors, (2540), 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 18:15:14,697 INFO L175 Difference]: Start difference. First operand has 46 places, 26 transitions, 76 flow. Second operand 9 states and 1031 transitions. [2022-11-25 18:15:14,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 22 transitions, 110 flow [2022-11-25 18:15:14,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 22 transitions, 94 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-25 18:15:14,698 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2022-11-25 18:15:14,699 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2022-11-25 18:15:14,699 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -10 predicate places. [2022-11-25 18:15:14,699 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2022-11-25 18:15:14,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.88888888888889) internal successors, (1034), 9 states have internal predecessors, (1034), 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 18:15:14,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-11-25 18:15:14,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-11-25 18:15:14,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-11-25 18:15:14,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-11-25 18:15:14,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-11-25 18:15:14,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-25 18:15:14,705 INFO L445 BasicCegarLoop]: Path program histogram: [46] [2022-11-25 18:15:14,708 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 18:15:14,709 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 18:15:14,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:15:14 BasicIcfg [2022-11-25 18:15:14,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 18:15:14,713 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 18:15:14,713 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 18:15:14,714 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 18:15:14,714 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:14:20" (3/4) ... [2022-11-25 18:15:14,718 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 18:15:14,725 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-25 18:15:14,725 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-25 18:15:14,725 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-25 18:15:14,725 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2022-11-25 18:15:14,731 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2022-11-25 18:15:14,731 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 18:15:14,732 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 18:15:14,732 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 18:15:14,774 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df65a29-4ec2-4181-b379-07a0da62bed7/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 18:15:14,774 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 18:15:14,775 INFO L158 Benchmark]: Toolchain (without parser) took 55698.21ms. Allocated memory was 138.4MB in the beginning and 664.8MB in the end (delta: 526.4MB). Free memory was 75.8MB in the beginning and 346.4MB in the end (delta: -270.6MB). Peak memory consumption was 257.3MB. Max. memory is 16.1GB. [2022-11-25 18:15:14,775 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 138.4MB. Free memory was 111.6MB in the beginning and 111.5MB in the end (delta: 94.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:15:14,775 INFO L158 Benchmark]: CACSL2BoogieTranslator took 534.30ms. Allocated memory was 138.4MB in the beginning and 180.4MB in the end (delta: 41.9MB). Free memory was 75.5MB in the beginning and 146.6MB in the end (delta: -71.1MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2022-11-25 18:15:14,776 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.00ms. Allocated memory is still 180.4MB. Free memory was 146.6MB in the beginning and 144.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:15:14,776 INFO L158 Benchmark]: Boogie Preprocessor took 32.54ms. Allocated memory is still 180.4MB. Free memory was 144.6MB in the beginning and 143.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:15:14,777 INFO L158 Benchmark]: RCFGBuilder took 928.00ms. Allocated memory is still 180.4MB. Free memory was 143.3MB in the beginning and 119.4MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-25 18:15:14,777 INFO L158 Benchmark]: TraceAbstraction took 54082.43ms. Allocated memory was 180.4MB in the beginning and 664.8MB in the end (delta: 484.4MB). Free memory was 119.4MB in the beginning and 349.6MB in the end (delta: -230.1MB). Peak memory consumption was 253.9MB. Max. memory is 16.1GB. [2022-11-25 18:15:14,777 INFO L158 Benchmark]: Witness Printer took 61.00ms. Allocated memory is still 664.8MB. Free memory was 349.6MB in the beginning and 346.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 18:15:14,779 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 138.4MB. Free memory was 111.6MB in the beginning and 111.5MB in the end (delta: 94.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 534.30ms. Allocated memory was 138.4MB in the beginning and 180.4MB in the end (delta: 41.9MB). Free memory was 75.5MB in the beginning and 146.6MB in the end (delta: -71.1MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.00ms. Allocated memory is still 180.4MB. Free memory was 146.6MB in the beginning and 144.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.54ms. Allocated memory is still 180.4MB. Free memory was 144.6MB in the beginning and 143.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 928.00ms. Allocated memory is still 180.4MB. Free memory was 143.3MB in the beginning and 119.4MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 54082.43ms. Allocated memory was 180.4MB in the beginning and 664.8MB in the end (delta: 484.4MB). Free memory was 119.4MB in the beginning and 349.6MB in the end (delta: -230.1MB). Peak memory consumption was 253.9MB. Max. memory is 16.1GB. * Witness Printer took 61.00ms. Allocated memory is still 664.8MB. Free memory was 349.6MB in the beginning and 346.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.9s, 136 PlacesBefore, 39 PlacesAfterwards, 125 TransitionsBefore, 26 TransitionsAfterwards, 1302 CoEnabledTransitionPairs, 8 FixpointIterations, 70 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 112 TotalNumberOfCompositions, 3301 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1847, independent: 1730, independent conditional: 0, independent unconditional: 1730, dependent: 117, dependent conditional: 0, dependent unconditional: 117, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 917, independent: 886, independent conditional: 0, independent unconditional: 886, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 917, independent: 856, independent conditional: 0, independent unconditional: 856, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 61, independent: 30, independent conditional: 0, independent unconditional: 30, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 266, independent: 86, independent conditional: 0, independent unconditional: 86, dependent: 179, dependent conditional: 0, dependent unconditional: 179, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1847, independent: 844, independent conditional: 0, independent unconditional: 844, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 917, unknown conditional: 0, unknown unconditional: 917] , Statistics on independence cache: Total cache size (in pairs): 106, Positive cache size: 94, Positive conditional cache size: 0, Positive unconditional cache size: 94, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 146]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 174 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 53.8s, OverallIterations: 46, TraceHistogramMax: 1, PathProgramHistogramMax: 46, EmptinessCheckTime: 0.0s, AutomataDifference: 29.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2759 SdHoareTripleChecker+Valid, 11.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2397 mSDsluCounter, 1642 SdHoareTripleChecker+Invalid, 9.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1579 mSDsCounter, 935 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12753 IncrementalHoareTripleChecker+Invalid, 13688 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 935 mSolverCounterUnsat, 63 mSDtfsCounter, 12753 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 469 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 414 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4777occurred in iteration=23, InterpolantAutomatonStates: 453, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 13.0s InterpolantComputationTime, 1196 NumberOfCodeBlocks, 1196 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 1150 ConstructedInterpolants, 0 QuantifiedInterpolants, 4896 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 46 InterpolantComputations, 46 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 18:15:14,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5df65a29-4ec2-4181-b379-07a0da62bed7/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE