./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix021_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f415fdd1-0de8-474f-a4a7-54ea3ba46a45/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f415fdd1-0de8-474f-a4a7-54ea3ba46a45/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_f415fdd1-0de8-474f-a4a7-54ea3ba46a45/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f415fdd1-0de8-474f-a4a7-54ea3ba46a45/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix021_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f415fdd1-0de8-474f-a4a7-54ea3ba46a45/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_f415fdd1-0de8-474f-a4a7-54ea3ba46a45/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 1821be0ec0c098ba0cd2fb39edc7421f58889218b21285544a5e01e847e429e6 --- 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 18:19:59,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:19:59,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:19:59,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:19:59,281 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:19:59,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:19:59,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:19:59,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:19:59,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:19:59,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:19:59,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:19:59,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:19:59,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:19:59,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:19:59,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:19:59,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:19:59,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:19:59,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:19:59,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:19:59,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:19:59,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:19:59,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:19:59,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:19:59,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:19:59,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:19:59,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:19:59,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:19:59,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:19:59,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:19:59,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:19:59,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:19:59,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:19:59,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:19:59,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:19:59,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:19:59,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:19:59,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:19:59,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:19:59,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:19:59,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:19:59,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:19:59,350 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f415fdd1-0de8-474f-a4a7-54ea3ba46a45/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 18:19:59,390 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:19:59,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:19:59,390 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:19:59,391 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:19:59,392 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:19:59,392 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:19:59,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:19:59,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:19:59,393 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:19:59,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:19:59,395 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:19:59,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:19:59,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:19:59,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:19:59,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:19:59,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:19:59,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:19:59,396 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:19:59,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:19:59,396 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:19:59,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:19:59,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:19:59,397 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:19:59,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:19:59,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:19:59,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:19:59,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:19:59,398 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:19:59,399 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:19:59,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:19:59,399 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:19:59,399 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:19:59,399 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:19:59,400 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:19:59,400 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_f415fdd1-0de8-474f-a4a7-54ea3ba46a45/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f415fdd1-0de8-474f-a4a7-54ea3ba46a45/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1821be0ec0c098ba0cd2fb39edc7421f58889218b21285544a5e01e847e429e6 [2022-11-25 18:19:59,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:19:59,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:19:59,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:19:59,770 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:19:59,770 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:19:59,772 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f415fdd1-0de8-474f-a4a7-54ea3ba46a45/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-wmm/mix021_tso.oepc.i [2022-11-25 18:20:02,793 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:20:03,209 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:20:03,211 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f415fdd1-0de8-474f-a4a7-54ea3ba46a45/sv-benchmarks/c/pthread-wmm/mix021_tso.oepc.i [2022-11-25 18:20:03,228 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f415fdd1-0de8-474f-a4a7-54ea3ba46a45/bin/uautomizer-ZsLfNo2U6R/data/68b68a968/2ac7c2e4139c4d2faadd90b181ec01d2/FLAG81db2c9b2 [2022-11-25 18:20:03,247 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f415fdd1-0de8-474f-a4a7-54ea3ba46a45/bin/uautomizer-ZsLfNo2U6R/data/68b68a968/2ac7c2e4139c4d2faadd90b181ec01d2 [2022-11-25 18:20:03,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:20:03,251 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:20:03,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:20:03,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:20:03,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:20:03,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:20:03" (1/1) ... [2022-11-25 18:20:03,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@323966e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:03, skipping insertion in model container [2022-11-25 18:20:03,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:20:03" (1/1) ... [2022-11-25 18:20:03,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:20:03,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:20:03,554 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_f415fdd1-0de8-474f-a4a7-54ea3ba46a45/sv-benchmarks/c/pthread-wmm/mix021_tso.oepc.i[949,962] [2022-11-25 18:20:03,718 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,719 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,719 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,720 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,720 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,721 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,721 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,721 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,722 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,723 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,723 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,724 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,724 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,728 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,728 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,729 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,730 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,732 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,732 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,733 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,733 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,736 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,737 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,737 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,738 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,739 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,739 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,741 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,744 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,744 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,745 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,752 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,753 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,754 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,757 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,766 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:20:03,779 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:20:03,791 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_f415fdd1-0de8-474f-a4a7-54ea3ba46a45/sv-benchmarks/c/pthread-wmm/mix021_tso.oepc.i[949,962] [2022-11-25 18:20:03,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,812 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,812 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,812 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,813 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,813 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,813 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,821 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,821 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,821 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,822 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,831 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,831 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,833 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,833 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,833 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,833 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,834 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,834 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,836 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,841 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,842 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,846 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,848 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,849 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,851 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,853 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:20:03,860 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:20:03,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:20:03,914 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:20:03,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:03 WrapperNode [2022-11-25 18:20:03,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:20:03,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:20:03,917 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:20:03,917 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:20:03,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:03" (1/1) ... [2022-11-25 18:20:03,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:03" (1/1) ... [2022-11-25 18:20:03,994 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 159 [2022-11-25 18:20:03,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:20:03,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:20:03,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:20:03,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:20:04,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:03" (1/1) ... [2022-11-25 18:20:04,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:03" (1/1) ... [2022-11-25 18:20:04,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:03" (1/1) ... [2022-11-25 18:20:04,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:03" (1/1) ... [2022-11-25 18:20:04,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:03" (1/1) ... [2022-11-25 18:20:04,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:03" (1/1) ... [2022-11-25 18:20:04,049 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:03" (1/1) ... [2022-11-25 18:20:04,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:03" (1/1) ... [2022-11-25 18:20:04,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:20:04,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:20:04,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:20:04,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:20:04,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:03" (1/1) ... [2022-11-25 18:20:04,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:20:04,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f415fdd1-0de8-474f-a4a7-54ea3ba46a45/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:20:04,089 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f415fdd1-0de8-474f-a4a7-54ea3ba46a45/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:20:04,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f415fdd1-0de8-474f-a4a7-54ea3ba46a45/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:20:04,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:20:04,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 18:20:04,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:20:04,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:20:04,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:20:04,134 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-25 18:20:04,134 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-25 18:20:04,134 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-25 18:20:04,134 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-25 18:20:04,135 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-25 18:20:04,135 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-25 18:20:04,135 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-25 18:20:04,135 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-25 18:20:04,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:20:04,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 18:20:04,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:20:04,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:20:04,138 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 18:20:04,372 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:20:04,374 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:20:04,878 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:20:05,100 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:20:05,100 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 18:20:05,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:20:05 BoogieIcfgContainer [2022-11-25 18:20:05,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:20:05,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:20:05,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:20:05,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:20:05,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:20:03" (1/3) ... [2022-11-25 18:20:05,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67318c72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:20:05, skipping insertion in model container [2022-11-25 18:20:05,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:03" (2/3) ... [2022-11-25 18:20:05,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67318c72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:20:05, skipping insertion in model container [2022-11-25 18:20:05,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:20:05" (3/3) ... [2022-11-25 18:20:05,113 INFO L112 eAbstractionObserver]: Analyzing ICFG mix021_tso.oepc.i [2022-11-25 18:20:05,123 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 18:20:05,135 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:20:05,135 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 18:20:05,135 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:20:05,193 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 18:20:05,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 136 transitions, 292 flow [2022-11-25 18:20:05,355 INFO L130 PetriNetUnfolder]: 2/132 cut-off events. [2022-11-25 18:20:05,356 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:20:05,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 2/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-11-25 18:20:05,363 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 136 transitions, 292 flow [2022-11-25 18:20:05,377 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 132 transitions, 276 flow [2022-11-25 18:20:05,382 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:20:05,405 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 132 transitions, 276 flow [2022-11-25 18:20:05,413 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 132 transitions, 276 flow [2022-11-25 18:20:05,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 132 transitions, 276 flow [2022-11-25 18:20:05,472 INFO L130 PetriNetUnfolder]: 2/132 cut-off events. [2022-11-25 18:20:05,472 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:20:05,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 2/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-11-25 18:20:05,477 INFO L119 LiptonReduction]: Number of co-enabled transitions 3218 [2022-11-25 18:20:11,152 INFO L134 LiptonReduction]: Checked pairs total: 8614 [2022-11-25 18:20:11,152 INFO L136 LiptonReduction]: Total number of compositions: 116 [2022-11-25 18:20:11,169 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:20:11,177 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;@2974526c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:20:11,177 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-25 18:20:11,182 INFO L130 PetriNetUnfolder]: 0/12 cut-off events. [2022-11-25 18:20:11,183 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:20:11,183 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:20:11,184 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:20:11,184 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:20:11,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:11,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1676464943, now seen corresponding path program 1 times [2022-11-25 18:20:11,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:20:11,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513544233] [2022-11-25 18:20:11,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:11,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:20:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:11,713 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 18:20:11,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:20:11,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513544233] [2022-11-25 18:20:11,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513544233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:11,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:11,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:20:11,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735199604] [2022-11-25 18:20:11,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:11,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:20:11,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:20:11,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:20:11,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:20:11,761 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 252 [2022-11-25 18:20:11,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:11,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:20:11,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 252 [2022-11-25 18:20:11,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:20:12,811 INFO L130 PetriNetUnfolder]: 3415/5062 cut-off events. [2022-11-25 18:20:12,812 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-11-25 18:20:12,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9890 conditions, 5062 events. 3415/5062 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 29196 event pairs, 649 based on Foata normal form. 0/4830 useless extension candidates. Maximal degree in co-relation 9878. Up to 3703 conditions per place. [2022-11-25 18:20:12,858 INFO L137 encePairwiseOnDemand]: 248/252 looper letters, 35 selfloop transitions, 2 changer transitions 2/44 dead transitions. [2022-11-25 18:20:12,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 44 transitions, 181 flow [2022-11-25 18:20:12,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:20:12,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:20:12,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 405 transitions. [2022-11-25 18:20:12,883 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2022-11-25 18:20:12,883 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 405 transitions. [2022-11-25 18:20:12,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 405 transitions. [2022-11-25 18:20:12,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:20:12,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 405 transitions. [2022-11-25 18:20:12,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:12,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:12,905 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:12,907 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 74 flow. Second operand 3 states and 405 transitions. [2022-11-25 18:20:12,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 44 transitions, 181 flow [2022-11-25 18:20:12,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 176 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 18:20:12,917 INFO L231 Difference]: Finished difference. Result has 40 places, 28 transitions, 68 flow [2022-11-25 18:20:12,919 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=40, PETRI_TRANSITIONS=28} [2022-11-25 18:20:12,925 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2022-11-25 18:20:12,925 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 68 flow [2022-11-25 18:20:12,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:12,926 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:20:12,926 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:20:12,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:20:12,927 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:20:12,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:12,938 INFO L85 PathProgramCache]: Analyzing trace with hash 128841784, now seen corresponding path program 1 times [2022-11-25 18:20:12,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:20:12,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482475835] [2022-11-25 18:20:12,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:12,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:20:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:13,728 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 18:20:13,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:20:13,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482475835] [2022-11-25 18:20:13,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482475835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:13,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:13,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:20:13,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035095475] [2022-11-25 18:20:13,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:13,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:20:13,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:20:13,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:20:13,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:20:13,833 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 252 [2022-11-25 18:20:13,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:13,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:20:13,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 252 [2022-11-25 18:20:13,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:20:16,122 INFO L130 PetriNetUnfolder]: 9959/13686 cut-off events. [2022-11-25 18:20:16,122 INFO L131 PetriNetUnfolder]: For 724/724 co-relation queries the response was YES. [2022-11-25 18:20:16,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28308 conditions, 13686 events. 9959/13686 cut-off events. For 724/724 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 69742 event pairs, 2087 based on Foata normal form. 640/14321 useless extension candidates. Maximal degree in co-relation 28298. Up to 7441 conditions per place. [2022-11-25 18:20:16,219 INFO L137 encePairwiseOnDemand]: 239/252 looper letters, 42 selfloop transitions, 11 changer transitions 38/92 dead transitions. [2022-11-25 18:20:16,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 92 transitions, 388 flow [2022-11-25 18:20:16,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:20:16,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:20:16,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 850 transitions. [2022-11-25 18:20:16,222 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.481859410430839 [2022-11-25 18:20:16,223 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 850 transitions. [2022-11-25 18:20:16,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 850 transitions. [2022-11-25 18:20:16,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:20:16,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 850 transitions. [2022-11-25 18:20:16,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 121.42857142857143) internal successors, (850), 7 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:16,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:16,231 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:16,231 INFO L175 Difference]: Start difference. First operand has 40 places, 28 transitions, 68 flow. Second operand 7 states and 850 transitions. [2022-11-25 18:20:16,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 92 transitions, 388 flow [2022-11-25 18:20:16,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 92 transitions, 374 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:20:16,239 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 170 flow [2022-11-25 18:20:16,239 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=170, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2022-11-25 18:20:16,240 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2022-11-25 18:20:16,240 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 170 flow [2022-11-25 18:20:16,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:16,241 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:20:16,241 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:20:16,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:20:16,242 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:20:16,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:16,242 INFO L85 PathProgramCache]: Analyzing trace with hash -651071232, now seen corresponding path program 1 times [2022-11-25 18:20:16,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:20:16,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416801495] [2022-11-25 18:20:16,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:16,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:20:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:16,940 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 18:20:16,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:20:16,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416801495] [2022-11-25 18:20:16,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416801495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:16,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:16,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:20:16,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805561779] [2022-11-25 18:20:16,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:16,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:20:16,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:20:16,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:20:16,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:20:17,042 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 252 [2022-11-25 18:20:17,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:17,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:20:17,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 252 [2022-11-25 18:20:17,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:20:19,260 INFO L130 PetriNetUnfolder]: 9610/13697 cut-off events. [2022-11-25 18:20:19,260 INFO L131 PetriNetUnfolder]: For 15342/15342 co-relation queries the response was YES. [2022-11-25 18:20:19,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42610 conditions, 13697 events. 9610/13697 cut-off events. For 15342/15342 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 76494 event pairs, 1155 based on Foata normal form. 478/14175 useless extension candidates. Maximal degree in co-relation 42594. Up to 8997 conditions per place. [2022-11-25 18:20:19,376 INFO L137 encePairwiseOnDemand]: 239/252 looper letters, 54 selfloop transitions, 21 changer transitions 35/111 dead transitions. [2022-11-25 18:20:19,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 111 transitions, 710 flow [2022-11-25 18:20:19,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:20:19,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:20:19,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 861 transitions. [2022-11-25 18:20:19,383 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2022-11-25 18:20:19,383 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 861 transitions. [2022-11-25 18:20:19,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 861 transitions. [2022-11-25 18:20:19,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:20:19,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 861 transitions. [2022-11-25 18:20:19,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 123.0) internal successors, (861), 7 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:19,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:19,392 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:19,393 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 170 flow. Second operand 7 states and 861 transitions. [2022-11-25 18:20:19,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 111 transitions, 710 flow [2022-11-25 18:20:19,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 111 transitions, 698 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-11-25 18:20:19,502 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 308 flow [2022-11-25 18:20:19,502 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=308, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2022-11-25 18:20:19,503 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2022-11-25 18:20:19,503 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 308 flow [2022-11-25 18:20:19,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:19,504 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:20:19,504 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:20:19,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:20:19,505 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:20:19,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:19,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1291598650, now seen corresponding path program 1 times [2022-11-25 18:20:19,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:20:19,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276417028] [2022-11-25 18:20:19,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:19,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:20:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:20,166 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 18:20:20,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:20:20,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276417028] [2022-11-25 18:20:20,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276417028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:20,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:20,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:20:20,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365883409] [2022-11-25 18:20:20,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:20,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:20:20,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:20:20,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:20:20,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:20:20,191 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 252 [2022-11-25 18:20:20,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:20,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:20:20,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 252 [2022-11-25 18:20:20,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:20:21,986 INFO L130 PetriNetUnfolder]: 9391/13609 cut-off events. [2022-11-25 18:20:21,986 INFO L131 PetriNetUnfolder]: For 27573/27731 co-relation queries the response was YES. [2022-11-25 18:20:22,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50811 conditions, 13609 events. 9391/13609 cut-off events. For 27573/27731 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 79678 event pairs, 2690 based on Foata normal form. 581/13716 useless extension candidates. Maximal degree in co-relation 50790. Up to 10005 conditions per place. [2022-11-25 18:20:22,099 INFO L137 encePairwiseOnDemand]: 247/252 looper letters, 53 selfloop transitions, 5 changer transitions 25/94 dead transitions. [2022-11-25 18:20:22,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 94 transitions, 738 flow [2022-11-25 18:20:22,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:20:22,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:20:22,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 659 transitions. [2022-11-25 18:20:22,103 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.523015873015873 [2022-11-25 18:20:22,103 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 659 transitions. [2022-11-25 18:20:22,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 659 transitions. [2022-11-25 18:20:22,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:20:22,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 659 transitions. [2022-11-25 18:20:22,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.8) internal successors, (659), 5 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:22,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 252.0) internal successors, (1512), 6 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:22,110 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 252.0) internal successors, (1512), 6 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:22,111 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 308 flow. Second operand 5 states and 659 transitions. [2022-11-25 18:20:22,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 94 transitions, 738 flow [2022-11-25 18:20:22,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 94 transitions, 728 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-11-25 18:20:22,613 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 361 flow [2022-11-25 18:20:22,614 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=361, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2022-11-25 18:20:22,616 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2022-11-25 18:20:22,616 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 361 flow [2022-11-25 18:20:22,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:22,617 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:20:22,617 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:20:22,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:20:22,617 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:20:22,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:22,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1689163160, now seen corresponding path program 1 times [2022-11-25 18:20:22,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:20:22,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277918876] [2022-11-25 18:20:22,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:22,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:20:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:23,061 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 18:20:23,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:20:23,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277918876] [2022-11-25 18:20:23,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277918876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:23,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:23,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:20:23,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885056196] [2022-11-25 18:20:23,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:23,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:20:23,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:20:23,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:20:23,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:20:23,080 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 252 [2022-11-25 18:20:23,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 361 flow. Second operand has 6 states, 6 states have (on average 120.5) internal successors, (723), 6 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:23,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:20:23,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 252 [2022-11-25 18:20:23,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:20:25,103 INFO L130 PetriNetUnfolder]: 9180/13343 cut-off events. [2022-11-25 18:20:25,104 INFO L131 PetriNetUnfolder]: For 30347/30659 co-relation queries the response was YES. [2022-11-25 18:20:25,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52812 conditions, 13343 events. 9180/13343 cut-off events. For 30347/30659 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 77874 event pairs, 1812 based on Foata normal form. 530/13506 useless extension candidates. Maximal degree in co-relation 52790. Up to 8735 conditions per place. [2022-11-25 18:20:25,241 INFO L137 encePairwiseOnDemand]: 244/252 looper letters, 63 selfloop transitions, 19 changer transitions 31/124 dead transitions. [2022-11-25 18:20:25,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 124 transitions, 1039 flow [2022-11-25 18:20:25,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:20:25,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:20:25,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 903 transitions. [2022-11-25 18:20:25,246 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2022-11-25 18:20:25,247 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 903 transitions. [2022-11-25 18:20:25,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 903 transitions. [2022-11-25 18:20:25,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:20:25,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 903 transitions. [2022-11-25 18:20:25,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:25,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:25,256 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:25,257 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 361 flow. Second operand 7 states and 903 transitions. [2022-11-25 18:20:25,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 124 transitions, 1039 flow [2022-11-25 18:20:25,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 124 transitions, 1030 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-25 18:20:25,319 INFO L231 Difference]: Finished difference. Result has 61 places, 62 transitions, 535 flow [2022-11-25 18:20:25,319 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=535, PETRI_PLACES=61, PETRI_TRANSITIONS=62} [2022-11-25 18:20:25,322 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2022-11-25 18:20:25,322 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 62 transitions, 535 flow [2022-11-25 18:20:25,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.5) internal successors, (723), 6 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:25,323 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:20:25,323 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:20:25,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:20:25,323 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:20:25,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:25,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1376031656, now seen corresponding path program 2 times [2022-11-25 18:20:25,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:20:25,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026906545] [2022-11-25 18:20:25,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:25,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:20:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:25,975 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 18:20:25,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:20:25,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026906545] [2022-11-25 18:20:25,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026906545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:25,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:25,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:20:25,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376357082] [2022-11-25 18:20:25,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:25,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:20:25,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:20:25,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:20:25,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:20:26,018 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 252 [2022-11-25 18:20:26,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 62 transitions, 535 flow. Second operand has 6 states, 6 states have (on average 121.5) internal successors, (729), 6 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:26,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:20:26,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 252 [2022-11-25 18:20:26,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:20:27,779 INFO L130 PetriNetUnfolder]: 8884/12884 cut-off events. [2022-11-25 18:20:27,780 INFO L131 PetriNetUnfolder]: For 48267/48759 co-relation queries the response was YES. [2022-11-25 18:20:27,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56787 conditions, 12884 events. 8884/12884 cut-off events. For 48267/48759 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 74057 event pairs, 1467 based on Foata normal form. 708/13166 useless extension candidates. Maximal degree in co-relation 56761. Up to 8677 conditions per place. [2022-11-25 18:20:27,919 INFO L137 encePairwiseOnDemand]: 247/252 looper letters, 74 selfloop transitions, 11 changer transitions 22/118 dead transitions. [2022-11-25 18:20:27,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 118 transitions, 1134 flow [2022-11-25 18:20:27,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:20:27,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:20:27,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 781 transitions. [2022-11-25 18:20:27,923 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5165343915343915 [2022-11-25 18:20:27,924 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 781 transitions. [2022-11-25 18:20:27,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 781 transitions. [2022-11-25 18:20:27,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:20:27,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 781 transitions. [2022-11-25 18:20:27,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 130.16666666666666) internal successors, (781), 6 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:27,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:27,931 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:27,932 INFO L175 Difference]: Start difference. First operand has 61 places, 62 transitions, 535 flow. Second operand 6 states and 781 transitions. [2022-11-25 18:20:27,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 118 transitions, 1134 flow [2022-11-25 18:20:28,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 118 transitions, 1100 flow, removed 11 selfloop flow, removed 3 redundant places. [2022-11-25 18:20:28,049 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 542 flow [2022-11-25 18:20:28,049 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=542, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2022-11-25 18:20:28,050 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 20 predicate places. [2022-11-25 18:20:28,050 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 542 flow [2022-11-25 18:20:28,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 121.5) internal successors, (729), 6 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:28,051 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:20:28,051 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:20:28,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:20:28,052 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:20:28,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:28,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1687643819, now seen corresponding path program 1 times [2022-11-25 18:20:28,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:20:28,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873673240] [2022-11-25 18:20:28,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:28,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:20:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:29,886 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 18:20:29,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:20:29,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873673240] [2022-11-25 18:20:29,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873673240] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:29,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:29,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:20:29,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047891641] [2022-11-25 18:20:29,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:29,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:20:29,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:20:29,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:20:29,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:20:30,059 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 252 [2022-11-25 18:20:30,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 542 flow. Second operand has 7 states, 7 states have (on average 111.28571428571429) internal successors, (779), 7 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:30,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:20:30,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 252 [2022-11-25 18:20:30,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:20:32,125 INFO L130 PetriNetUnfolder]: 11015/15203 cut-off events. [2022-11-25 18:20:32,125 INFO L131 PetriNetUnfolder]: For 54678/55013 co-relation queries the response was YES. [2022-11-25 18:20:32,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66463 conditions, 15203 events. 11015/15203 cut-off events. For 54678/55013 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 79515 event pairs, 2161 based on Foata normal form. 621/15720 useless extension candidates. Maximal degree in co-relation 66435. Up to 11530 conditions per place. [2022-11-25 18:20:32,222 INFO L137 encePairwiseOnDemand]: 241/252 looper letters, 113 selfloop transitions, 39 changer transitions 43/199 dead transitions. [2022-11-25 18:20:32,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 199 transitions, 1958 flow [2022-11-25 18:20:32,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:20:32,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 18:20:32,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1096 transitions. [2022-11-25 18:20:32,226 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48324514991181655 [2022-11-25 18:20:32,226 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1096 transitions. [2022-11-25 18:20:32,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1096 transitions. [2022-11-25 18:20:32,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:20:32,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1096 transitions. [2022-11-25 18:20:32,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 121.77777777777777) internal successors, (1096), 9 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:32,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 252.0) internal successors, (2520), 10 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:32,234 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 252.0) internal successors, (2520), 10 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:32,234 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 542 flow. Second operand 9 states and 1096 transitions. [2022-11-25 18:20:32,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 199 transitions, 1958 flow [2022-11-25 18:20:32,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 199 transitions, 1926 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-11-25 18:20:32,304 INFO L231 Difference]: Finished difference. Result has 72 places, 96 transitions, 1052 flow [2022-11-25 18:20:32,305 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1052, PETRI_PLACES=72, PETRI_TRANSITIONS=96} [2022-11-25 18:20:32,305 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2022-11-25 18:20:32,306 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 96 transitions, 1052 flow [2022-11-25 18:20:32,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 111.28571428571429) internal successors, (779), 7 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:32,306 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:20:32,306 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:20:32,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:20:32,307 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:20:32,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:32,307 INFO L85 PathProgramCache]: Analyzing trace with hash -811084667, now seen corresponding path program 1 times [2022-11-25 18:20:32,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:20:32,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722829956] [2022-11-25 18:20:32,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:32,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:20:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:32,759 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 18:20:32,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:20:32,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722829956] [2022-11-25 18:20:32,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722829956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:32,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:32,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:20:32,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022268311] [2022-11-25 18:20:32,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:32,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:20:32,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:20:32,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:20:32,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:20:32,788 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 252 [2022-11-25 18:20:32,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 96 transitions, 1052 flow. Second operand has 6 states, 6 states have (on average 119.66666666666667) internal successors, (718), 6 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:32,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:20:32,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 252 [2022-11-25 18:20:32,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:20:34,488 INFO L130 PetriNetUnfolder]: 9435/13522 cut-off events. [2022-11-25 18:20:34,488 INFO L131 PetriNetUnfolder]: For 82950/84046 co-relation queries the response was YES. [2022-11-25 18:20:34,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67779 conditions, 13522 events. 9435/13522 cut-off events. For 82950/84046 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 76346 event pairs, 2135 based on Foata normal form. 588/13816 useless extension candidates. Maximal degree in co-relation 67746. Up to 9119 conditions per place. [2022-11-25 18:20:34,615 INFO L137 encePairwiseOnDemand]: 243/252 looper letters, 87 selfloop transitions, 41 changer transitions 12/155 dead transitions. [2022-11-25 18:20:34,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 155 transitions, 1778 flow [2022-11-25 18:20:34,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:20:34,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:20:34,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 773 transitions. [2022-11-25 18:20:34,619 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5112433862433863 [2022-11-25 18:20:34,619 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 773 transitions. [2022-11-25 18:20:34,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 773 transitions. [2022-11-25 18:20:34,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:20:34,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 773 transitions. [2022-11-25 18:20:34,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 128.83333333333334) internal successors, (773), 6 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:34,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:34,626 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:34,626 INFO L175 Difference]: Start difference. First operand has 72 places, 96 transitions, 1052 flow. Second operand 6 states and 773 transitions. [2022-11-25 18:20:34,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 155 transitions, 1778 flow [2022-11-25 18:20:34,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 155 transitions, 1706 flow, removed 36 selfloop flow, removed 3 redundant places. [2022-11-25 18:20:34,959 INFO L231 Difference]: Finished difference. Result has 73 places, 107 transitions, 1251 flow [2022-11-25 18:20:34,960 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1251, PETRI_PLACES=73, PETRI_TRANSITIONS=107} [2022-11-25 18:20:34,960 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2022-11-25 18:20:34,961 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 107 transitions, 1251 flow [2022-11-25 18:20:34,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.66666666666667) internal successors, (718), 6 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:34,961 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:20:34,962 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:20:34,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:20:34,962 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:20:34,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:34,963 INFO L85 PathProgramCache]: Analyzing trace with hash 797110393, now seen corresponding path program 2 times [2022-11-25 18:20:34,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:20:34,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613033726] [2022-11-25 18:20:34,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:34,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:20:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:35,498 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 18:20:35,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:20:35,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613033726] [2022-11-25 18:20:35,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613033726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:35,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:35,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:20:35,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738421157] [2022-11-25 18:20:35,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:35,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:20:35,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:20:35,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:20:35,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:20:35,543 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 252 [2022-11-25 18:20:35,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 107 transitions, 1251 flow. Second operand has 7 states, 7 states have (on average 119.28571428571429) internal successors, (835), 7 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:35,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:20:35,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 252 [2022-11-25 18:20:35,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:20:37,441 INFO L130 PetriNetUnfolder]: 9643/13834 cut-off events. [2022-11-25 18:20:37,442 INFO L131 PetriNetUnfolder]: For 92280/93359 co-relation queries the response was YES. [2022-11-25 18:20:37,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71999 conditions, 13834 events. 9643/13834 cut-off events. For 92280/93359 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 78315 event pairs, 2119 based on Foata normal form. 607/14151 useless extension candidates. Maximal degree in co-relation 71965. Up to 9151 conditions per place. [2022-11-25 18:20:37,546 INFO L137 encePairwiseOnDemand]: 243/252 looper letters, 90 selfloop transitions, 46 changer transitions 21/172 dead transitions. [2022-11-25 18:20:37,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 172 transitions, 2106 flow [2022-11-25 18:20:37,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:20:37,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:20:37,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 897 transitions. [2022-11-25 18:20:37,550 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5085034013605442 [2022-11-25 18:20:37,550 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 897 transitions. [2022-11-25 18:20:37,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 897 transitions. [2022-11-25 18:20:37,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:20:37,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 897 transitions. [2022-11-25 18:20:37,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 128.14285714285714) internal successors, (897), 7 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:37,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:37,556 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:37,557 INFO L175 Difference]: Start difference. First operand has 73 places, 107 transitions, 1251 flow. Second operand 7 states and 897 transitions. [2022-11-25 18:20:37,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 172 transitions, 2106 flow [2022-11-25 18:20:37,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 172 transitions, 1992 flow, removed 24 selfloop flow, removed 4 redundant places. [2022-11-25 18:20:37,705 INFO L231 Difference]: Finished difference. Result has 77 places, 115 transitions, 1401 flow [2022-11-25 18:20:37,706 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=1137, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1401, PETRI_PLACES=77, PETRI_TRANSITIONS=115} [2022-11-25 18:20:37,708 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2022-11-25 18:20:37,708 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 115 transitions, 1401 flow [2022-11-25 18:20:37,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 119.28571428571429) internal successors, (835), 7 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:37,712 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:20:37,712 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:20:37,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:20:37,714 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:20:37,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:37,714 INFO L85 PathProgramCache]: Analyzing trace with hash -291693953, now seen corresponding path program 3 times [2022-11-25 18:20:37,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:20:37,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228480339] [2022-11-25 18:20:37,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:37,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:20:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:38,636 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 18:20:38,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:20:38,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228480339] [2022-11-25 18:20:38,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228480339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:38,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:38,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:20:38,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476340255] [2022-11-25 18:20:38,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:38,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:20:38,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:20:38,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:20:38,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:20:38,759 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 252 [2022-11-25 18:20:38,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 115 transitions, 1401 flow. Second operand has 8 states, 8 states have (on average 108.125) internal successors, (865), 8 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:38,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:20:38,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 252 [2022-11-25 18:20:38,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:20:41,471 INFO L130 PetriNetUnfolder]: 13191/18160 cut-off events. [2022-11-25 18:20:41,472 INFO L131 PetriNetUnfolder]: For 115271/115271 co-relation queries the response was YES. [2022-11-25 18:20:41,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95468 conditions, 18160 events. 13191/18160 cut-off events. For 115271/115271 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 94615 event pairs, 1025 based on Foata normal form. 368/18528 useless extension candidates. Maximal degree in co-relation 95432. Up to 10645 conditions per place. [2022-11-25 18:20:41,602 INFO L137 encePairwiseOnDemand]: 238/252 looper letters, 119 selfloop transitions, 118 changer transitions 44/281 dead transitions. [2022-11-25 18:20:41,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 281 transitions, 3511 flow [2022-11-25 18:20:41,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 18:20:41,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 18:20:41,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1212 transitions. [2022-11-25 18:20:41,608 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48095238095238096 [2022-11-25 18:20:41,608 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1212 transitions. [2022-11-25 18:20:41,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1212 transitions. [2022-11-25 18:20:41,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:20:41,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1212 transitions. [2022-11-25 18:20:41,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 121.2) internal successors, (1212), 10 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:41,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 252.0) internal successors, (2772), 11 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:41,616 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 252.0) internal successors, (2772), 11 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:41,617 INFO L175 Difference]: Start difference. First operand has 77 places, 115 transitions, 1401 flow. Second operand 10 states and 1212 transitions. [2022-11-25 18:20:41,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 281 transitions, 3511 flow [2022-11-25 18:20:41,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 281 transitions, 3386 flow, removed 19 selfloop flow, removed 4 redundant places. [2022-11-25 18:20:41,815 INFO L231 Difference]: Finished difference. Result has 88 places, 175 transitions, 2621 flow [2022-11-25 18:20:41,815 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2621, PETRI_PLACES=88, PETRI_TRANSITIONS=175} [2022-11-25 18:20:41,816 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 45 predicate places. [2022-11-25 18:20:41,816 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 175 transitions, 2621 flow [2022-11-25 18:20:41,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 108.125) internal successors, (865), 8 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:41,817 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:20:41,817 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:20:41,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 18:20:41,817 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:20:41,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:41,818 INFO L85 PathProgramCache]: Analyzing trace with hash 726403053, now seen corresponding path program 4 times [2022-11-25 18:20:41,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:20:41,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926113532] [2022-11-25 18:20:41,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:41,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:20:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:42,263 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 18:20:42,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:20:42,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926113532] [2022-11-25 18:20:42,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926113532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:42,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:42,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:20:42,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343699672] [2022-11-25 18:20:42,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:42,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:20:42,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:20:42,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:20:42,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:20:42,299 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 252 [2022-11-25 18:20:42,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 175 transitions, 2621 flow. Second operand has 7 states, 7 states have (on average 118.28571428571429) internal successors, (828), 7 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:42,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:20:42,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 252 [2022-11-25 18:20:42,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:20:44,924 INFO L130 PetriNetUnfolder]: 11569/16540 cut-off events. [2022-11-25 18:20:44,924 INFO L131 PetriNetUnfolder]: For 223900/225488 co-relation queries the response was YES. [2022-11-25 18:20:45,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108561 conditions, 16540 events. 11569/16540 cut-off events. For 223900/225488 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 96507 event pairs, 1781 based on Foata normal form. 1303/17372 useless extension candidates. Maximal degree in co-relation 108518. Up to 9793 conditions per place. [2022-11-25 18:20:45,067 INFO L137 encePairwiseOnDemand]: 243/252 looper letters, 112 selfloop transitions, 101 changer transitions 23/268 dead transitions. [2022-11-25 18:20:45,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 268 transitions, 4091 flow [2022-11-25 18:20:45,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 18:20:45,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 18:20:45,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1265 transitions. [2022-11-25 18:20:45,072 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.501984126984127 [2022-11-25 18:20:45,072 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1265 transitions. [2022-11-25 18:20:45,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1265 transitions. [2022-11-25 18:20:45,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:20:45,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1265 transitions. [2022-11-25 18:20:45,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 126.5) internal successors, (1265), 10 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 18:20:45,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 252.0) internal successors, (2772), 11 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:45,081 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 252.0) internal successors, (2772), 11 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:45,081 INFO L175 Difference]: Start difference. First operand has 88 places, 175 transitions, 2621 flow. Second operand 10 states and 1265 transitions. [2022-11-25 18:20:45,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 268 transitions, 4091 flow [2022-11-25 18:20:46,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 268 transitions, 3705 flow, removed 193 selfloop flow, removed 2 redundant places. [2022-11-25 18:20:46,219 INFO L231 Difference]: Finished difference. Result has 96 places, 195 transitions, 3019 flow [2022-11-25 18:20:46,220 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=2383, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3019, PETRI_PLACES=96, PETRI_TRANSITIONS=195} [2022-11-25 18:20:46,220 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 53 predicate places. [2022-11-25 18:20:46,220 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 195 transitions, 3019 flow [2022-11-25 18:20:46,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.28571428571429) internal successors, (828), 7 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:46,221 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:20:46,221 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:20:46,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 18:20:46,222 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:20:46,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:46,222 INFO L85 PathProgramCache]: Analyzing trace with hash 197590550, now seen corresponding path program 1 times [2022-11-25 18:20:46,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:20:46,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313111561] [2022-11-25 18:20:46,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:46,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:20:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:46,982 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 18:20:46,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:20:46,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313111561] [2022-11-25 18:20:46,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313111561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:46,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:46,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:20:46,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076365542] [2022-11-25 18:20:46,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:46,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:20:46,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:20:46,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:20:46,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:20:47,035 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 252 [2022-11-25 18:20:47,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 195 transitions, 3019 flow. Second operand has 8 states, 8 states have (on average 118.125) internal successors, (945), 8 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:47,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:20:47,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 252 [2022-11-25 18:20:47,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:20:51,012 INFO L130 PetriNetUnfolder]: 12545/17967 cut-off events. [2022-11-25 18:20:51,012 INFO L131 PetriNetUnfolder]: For 223491/225716 co-relation queries the response was YES. [2022-11-25 18:20:51,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117096 conditions, 17967 events. 12545/17967 cut-off events. For 223491/225716 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 106420 event pairs, 2528 based on Foata normal form. 941/18323 useless extension candidates. Maximal degree in co-relation 117049. Up to 11566 conditions per place. [2022-11-25 18:20:51,169 INFO L137 encePairwiseOnDemand]: 243/252 looper letters, 147 selfloop transitions, 63 changer transitions 18/260 dead transitions. [2022-11-25 18:20:51,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 260 transitions, 4085 flow [2022-11-25 18:20:51,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:20:51,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:20:51,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 891 transitions. [2022-11-25 18:20:51,173 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5051020408163265 [2022-11-25 18:20:51,173 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 891 transitions. [2022-11-25 18:20:51,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 891 transitions. [2022-11-25 18:20:51,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:20:51,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 891 transitions. [2022-11-25 18:20:51,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:51,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:51,179 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:51,180 INFO L175 Difference]: Start difference. First operand has 96 places, 195 transitions, 3019 flow. Second operand 7 states and 891 transitions. [2022-11-25 18:20:51,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 260 transitions, 4085 flow [2022-11-25 18:20:51,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 260 transitions, 3939 flow, removed 38 selfloop flow, removed 7 redundant places. [2022-11-25 18:20:51,843 INFO L231 Difference]: Finished difference. Result has 97 places, 209 transitions, 3332 flow [2022-11-25 18:20:51,844 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=2876, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3332, PETRI_PLACES=97, PETRI_TRANSITIONS=209} [2022-11-25 18:20:51,844 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 54 predicate places. [2022-11-25 18:20:51,844 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 209 transitions, 3332 flow [2022-11-25 18:20:51,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 118.125) internal successors, (945), 8 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:51,845 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:20:51,845 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:20:51,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 18:20:51,846 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:20:51,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:51,846 INFO L85 PathProgramCache]: Analyzing trace with hash -810097246, now seen corresponding path program 2 times [2022-11-25 18:20:51,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:20:51,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362678673] [2022-11-25 18:20:51,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:51,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:20:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:52,500 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 18:20:52,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:20:52,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362678673] [2022-11-25 18:20:52,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362678673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:52,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:52,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:20:52,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890224501] [2022-11-25 18:20:52,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:52,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:20:52,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:20:52,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:20:52,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:20:52,550 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 252 [2022-11-25 18:20:52,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 209 transitions, 3332 flow. Second operand has 8 states, 8 states have (on average 119.125) internal successors, (953), 8 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:52,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:20:52,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 252 [2022-11-25 18:20:52,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:20:56,253 INFO L130 PetriNetUnfolder]: 13831/19911 cut-off events. [2022-11-25 18:20:56,253 INFO L131 PetriNetUnfolder]: For 279425/281944 co-relation queries the response was YES. [2022-11-25 18:20:56,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135939 conditions, 19911 events. 13831/19911 cut-off events. For 279425/281944 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 121494 event pairs, 2650 based on Foata normal form. 1127/20367 useless extension candidates. Maximal degree in co-relation 135892. Up to 10580 conditions per place. [2022-11-25 18:20:56,617 INFO L137 encePairwiseOnDemand]: 243/252 looper letters, 125 selfloop transitions, 109 changer transitions 32/298 dead transitions. [2022-11-25 18:20:56,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 298 transitions, 4954 flow [2022-11-25 18:20:56,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:20:56,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:20:56,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 906 transitions. [2022-11-25 18:20:56,620 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5136054421768708 [2022-11-25 18:20:56,620 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 906 transitions. [2022-11-25 18:20:56,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 906 transitions. [2022-11-25 18:20:56,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:20:56,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 906 transitions. [2022-11-25 18:20:56,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 129.42857142857142) internal successors, (906), 7 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:56,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:56,626 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:56,627 INFO L175 Difference]: Start difference. First operand has 97 places, 209 transitions, 3332 flow. Second operand 7 states and 906 transitions. [2022-11-25 18:20:56,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 298 transitions, 4954 flow [2022-11-25 18:20:57,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 298 transitions, 4841 flow, removed 38 selfloop flow, removed 3 redundant places. [2022-11-25 18:20:57,438 INFO L231 Difference]: Finished difference. Result has 101 places, 227 transitions, 3948 flow [2022-11-25 18:20:57,439 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=3243, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3948, PETRI_PLACES=101, PETRI_TRANSITIONS=227} [2022-11-25 18:20:57,439 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 58 predicate places. [2022-11-25 18:20:57,439 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 227 transitions, 3948 flow [2022-11-25 18:20:57,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 119.125) internal successors, (953), 8 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:57,440 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:20:57,440 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:20:57,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 18:20:57,440 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:20:57,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:57,441 INFO L85 PathProgramCache]: Analyzing trace with hash 242277050, now seen corresponding path program 3 times [2022-11-25 18:20:57,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:20:57,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508468377] [2022-11-25 18:20:57,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:57,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:20:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:58,083 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 18:20:58,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:20:58,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508468377] [2022-11-25 18:20:58,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508468377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:58,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:58,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:20:58,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878731072] [2022-11-25 18:20:58,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:58,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:20:58,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:20:58,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:20:58,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:20:58,128 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 252 [2022-11-25 18:20:58,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 227 transitions, 3948 flow. Second operand has 7 states, 7 states have (on average 119.42857142857143) internal successors, (836), 7 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:58,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:20:58,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 252 [2022-11-25 18:20:58,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:21:02,562 INFO L130 PetriNetUnfolder]: 14576/20939 cut-off events. [2022-11-25 18:21:02,562 INFO L131 PetriNetUnfolder]: For 343851/347451 co-relation queries the response was YES. [2022-11-25 18:21:02,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148806 conditions, 20939 events. 14576/20939 cut-off events. For 343851/347451 co-relation queries the response was YES. Maximal size of possible extension queue 950. Compared 129277 event pairs, 6292 based on Foata normal form. 1453/21659 useless extension candidates. Maximal degree in co-relation 148757. Up to 14123 conditions per place. [2022-11-25 18:21:02,822 INFO L137 encePairwiseOnDemand]: 243/252 looper letters, 151 selfloop transitions, 71 changer transitions 18/272 dead transitions. [2022-11-25 18:21:02,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 272 transitions, 4913 flow [2022-11-25 18:21:02,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:21:02,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:21:02,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 887 transitions. [2022-11-25 18:21:02,825 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5028344671201814 [2022-11-25 18:21:02,825 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 887 transitions. [2022-11-25 18:21:02,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 887 transitions. [2022-11-25 18:21:02,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:21:02,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 887 transitions. [2022-11-25 18:21:02,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 126.71428571428571) internal successors, (887), 7 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:02,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:02,833 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:02,833 INFO L175 Difference]: Start difference. First operand has 101 places, 227 transitions, 3948 flow. Second operand 7 states and 887 transitions. [2022-11-25 18:21:02,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 272 transitions, 4913 flow [2022-11-25 18:21:04,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 272 transitions, 4651 flow, removed 67 selfloop flow, removed 5 redundant places. [2022-11-25 18:21:04,106 INFO L231 Difference]: Finished difference. Result has 103 places, 232 transitions, 4039 flow [2022-11-25 18:21:04,106 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=3750, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4039, PETRI_PLACES=103, PETRI_TRANSITIONS=232} [2022-11-25 18:21:04,107 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 60 predicate places. [2022-11-25 18:21:04,107 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 232 transitions, 4039 flow [2022-11-25 18:21:04,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 119.42857142857143) internal successors, (836), 7 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:04,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:21:04,108 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:21:04,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 18:21:04,108 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:21:04,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:21:04,109 INFO L85 PathProgramCache]: Analyzing trace with hash -484840490, now seen corresponding path program 4 times [2022-11-25 18:21:04,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:21:04,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341858523] [2022-11-25 18:21:04,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:21:04,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:21:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:21:04,924 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 18:21:04,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:21:04,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341858523] [2022-11-25 18:21:04,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341858523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:21:04,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:21:04,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:21:04,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594344048] [2022-11-25 18:21:04,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:21:04,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:21:04,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:21:04,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:21:04,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:21:04,984 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 252 [2022-11-25 18:21:04,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 232 transitions, 4039 flow. Second operand has 8 states, 8 states have (on average 118.125) internal successors, (945), 8 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:04,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:21:04,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 252 [2022-11-25 18:21:04,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:21:09,206 INFO L130 PetriNetUnfolder]: 14663/21195 cut-off events. [2022-11-25 18:21:09,206 INFO L131 PetriNetUnfolder]: For 329601/332206 co-relation queries the response was YES. [2022-11-25 18:21:09,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148828 conditions, 21195 events. 14663/21195 cut-off events. For 329601/332206 co-relation queries the response was YES. Maximal size of possible extension queue 996. Compared 131818 event pairs, 3172 based on Foata normal form. 809/21203 useless extension candidates. Maximal degree in co-relation 148778. Up to 14176 conditions per place. [2022-11-25 18:21:09,511 INFO L137 encePairwiseOnDemand]: 243/252 looper letters, 174 selfloop transitions, 67 changer transitions 10/283 dead transitions. [2022-11-25 18:21:09,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 283 transitions, 5075 flow [2022-11-25 18:21:09,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:21:09,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:21:09,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 767 transitions. [2022-11-25 18:21:09,514 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5072751322751323 [2022-11-25 18:21:09,515 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 767 transitions. [2022-11-25 18:21:09,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 767 transitions. [2022-11-25 18:21:09,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:21:09,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 767 transitions. [2022-11-25 18:21:09,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 127.83333333333333) internal successors, (767), 6 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:09,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:09,518 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:09,519 INFO L175 Difference]: Start difference. First operand has 103 places, 232 transitions, 4039 flow. Second operand 6 states and 767 transitions. [2022-11-25 18:21:09,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 283 transitions, 5075 flow [2022-11-25 18:21:10,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 283 transitions, 4915 flow, removed 44 selfloop flow, removed 4 redundant places. [2022-11-25 18:21:10,802 INFO L231 Difference]: Finished difference. Result has 104 places, 245 transitions, 4374 flow [2022-11-25 18:21:10,802 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=3918, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4374, PETRI_PLACES=104, PETRI_TRANSITIONS=245} [2022-11-25 18:21:10,803 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 61 predicate places. [2022-11-25 18:21:10,803 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 245 transitions, 4374 flow [2022-11-25 18:21:10,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 118.125) internal successors, (945), 8 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:10,803 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:21:10,803 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:21:10,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 18:21:10,804 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:21:10,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:21:10,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1662890676, now seen corresponding path program 1 times [2022-11-25 18:21:10,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:21:10,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122395377] [2022-11-25 18:21:10,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:21:10,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:21:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:21:11,267 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 18:21:11,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:21:11,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122395377] [2022-11-25 18:21:11,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122395377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:21:11,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:21:11,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:21:11,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231131555] [2022-11-25 18:21:11,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:21:11,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:21:11,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:21:11,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:21:11,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:21:11,404 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 252 [2022-11-25 18:21:11,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 245 transitions, 4374 flow. Second operand has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:11,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:21:11,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 252 [2022-11-25 18:21:11,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:21:17,872 INFO L130 PetriNetUnfolder]: 23656/32921 cut-off events. [2022-11-25 18:21:17,872 INFO L131 PetriNetUnfolder]: For 473392/474768 co-relation queries the response was YES. [2022-11-25 18:21:18,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226069 conditions, 32921 events. 23656/32921 cut-off events. For 473392/474768 co-relation queries the response was YES. Maximal size of possible extension queue 1304. Compared 196952 event pairs, 1641 based on Foata normal form. 1339/34123 useless extension candidates. Maximal degree in co-relation 226019. Up to 15879 conditions per place. [2022-11-25 18:21:18,424 INFO L137 encePairwiseOnDemand]: 238/252 looper letters, 193 selfloop transitions, 174 changer transitions 150/523 dead transitions. [2022-11-25 18:21:18,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 523 transitions, 10181 flow [2022-11-25 18:21:18,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:21:18,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:21:18,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 843 transitions. [2022-11-25 18:21:18,428 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.477891156462585 [2022-11-25 18:21:18,428 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 843 transitions. [2022-11-25 18:21:18,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 843 transitions. [2022-11-25 18:21:18,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:21:18,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 843 transitions. [2022-11-25 18:21:18,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 120.42857142857143) internal successors, (843), 7 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:18,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:18,434 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:18,434 INFO L175 Difference]: Start difference. First operand has 104 places, 245 transitions, 4374 flow. Second operand 7 states and 843 transitions. [2022-11-25 18:21:18,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 523 transitions, 10181 flow [2022-11-25 18:21:20,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 523 transitions, 9845 flow, removed 83 selfloop flow, removed 4 redundant places. [2022-11-25 18:21:20,255 INFO L231 Difference]: Finished difference. Result has 111 places, 293 transitions, 5810 flow [2022-11-25 18:21:20,256 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=4210, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5810, PETRI_PLACES=111, PETRI_TRANSITIONS=293} [2022-11-25 18:21:20,256 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 68 predicate places. [2022-11-25 18:21:20,256 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 293 transitions, 5810 flow [2022-11-25 18:21:20,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:20,257 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:21:20,257 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:21:20,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 18:21:20,257 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:21:20,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:21:20,258 INFO L85 PathProgramCache]: Analyzing trace with hash 197752774, now seen corresponding path program 2 times [2022-11-25 18:21:20,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:21:20,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598682299] [2022-11-25 18:21:20,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:21:20,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:21:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:21:20,475 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 18:21:20,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:21:20,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598682299] [2022-11-25 18:21:20,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598682299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:21:20,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:21:20,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:21:20,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431826488] [2022-11-25 18:21:20,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:21:20,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:21:20,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:21:20,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:21:20,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:21:20,493 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 252 [2022-11-25 18:21:20,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 293 transitions, 5810 flow. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:20,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:21:20,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 252 [2022-11-25 18:21:20,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand