./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_6a8f4268-c432-4b27-a168-99398ccae1b9/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f4268-c432-4b27-a168-99398ccae1b9/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f4268-c432-4b27-a168-99398ccae1b9/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f4268-c432-4b27-a168-99398ccae1b9/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f4268-c432-4b27-a168-99398ccae1b9/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f4268-c432-4b27-a168-99398ccae1b9/bin/uautomizer-uyxdKDjOR8 --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 26c7def9550acbb8db0f014014632a2eeeeca7df9ce503e9999e1bc5b1d84980 --- 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-2329fc7 [2022-12-13 21:59:49,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:59:49,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:59:49,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:59:49,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:59:49,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:59:49,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:59:49,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:59:49,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:59:49,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:59:49,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:59:49,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:59:49,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:59:49,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:59:49,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:59:49,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:59:49,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:59:49,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:59:49,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:59:49,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:59:49,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:59:49,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:59:49,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:59:49,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:59:49,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:59:49,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:59:49,440 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:59:49,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:59:49,441 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:59:49,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:59:49,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:59:49,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:59:49,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:59:49,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:59:49,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:59:49,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:59:49,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:59:49,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:59:49,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:59:49,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:59:49,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:59:49,447 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f4268-c432-4b27-a168-99398ccae1b9/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 21:59:49,461 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:59:49,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:59:49,462 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:59:49,462 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:59:49,462 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:59:49,462 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:59:49,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:59:49,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:59:49,463 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:59:49,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:59:49,464 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:59:49,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:59:49,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:59:49,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:59:49,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:59:49,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:59:49,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:59:49,464 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:59:49,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:59:49,465 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:59:49,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:59:49,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:59:49,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:59:49,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:59:49,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:59:49,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:59:49,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:59:49,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:59:49,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:59:49,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:59:49,466 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:59:49,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:59:49,466 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:59:49,466 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:59:49,466 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:59:49,466 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_6a8f4268-c432-4b27-a168-99398ccae1b9/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f4268-c432-4b27-a168-99398ccae1b9/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26c7def9550acbb8db0f014014632a2eeeeca7df9ce503e9999e1bc5b1d84980 [2022-12-13 21:59:49,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:59:49,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:59:49,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:59:49,648 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:59:49,649 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:59:49,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f4268-c432-4b27-a168-99398ccae1b9/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-13 21:59:52,300 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:59:52,505 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:59:52,505 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f4268-c432-4b27-a168-99398ccae1b9/sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-13 21:59:52,517 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f4268-c432-4b27-a168-99398ccae1b9/bin/uautomizer-uyxdKDjOR8/data/049dbca1a/a348fdd1344847eeb6c6ae8091afbc74/FLAG679f9011a [2022-12-13 21:59:52,528 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f4268-c432-4b27-a168-99398ccae1b9/bin/uautomizer-uyxdKDjOR8/data/049dbca1a/a348fdd1344847eeb6c6ae8091afbc74 [2022-12-13 21:59:52,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:59:52,533 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:59:52,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:59:52,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:59:52,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:59:52,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:59:52" (1/1) ... [2022-12-13 21:59:52,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39b305ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:52, skipping insertion in model container [2022-12-13 21:59:52,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:59:52" (1/1) ... [2022-12-13 21:59:52,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:59:52,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:59:52,730 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_6a8f4268-c432-4b27-a168-99398ccae1b9/sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-13 21:59:52,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,876 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,876 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,877 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,877 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,877 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,877 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,878 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,878 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,878 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,883 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,884 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,885 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,885 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,885 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,886 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:59:52,896 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:59:52,907 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_6a8f4268-c432-4b27-a168-99398ccae1b9/sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-13 21:59:52,925 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,925 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,926 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,926 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,926 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,926 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,927 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,927 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,927 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,928 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,928 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,928 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,928 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,929 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,929 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,929 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,930 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,930 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,930 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,931 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,931 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,931 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,931 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,932 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,935 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,936 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,936 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,936 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,936 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:52,937 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:52,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:59:52,968 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:59:52,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:52 WrapperNode [2022-12-13 21:59:52,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:59:52,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:59:52,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:59:52,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:59:52,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:52" (1/1) ... [2022-12-13 21:59:52,989 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:52" (1/1) ... [2022-12-13 21:59:53,009 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-13 21:59:53,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:59:53,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:59:53,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:59:53,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:59:53,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:52" (1/1) ... [2022-12-13 21:59:53,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:52" (1/1) ... [2022-12-13 21:59:53,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:52" (1/1) ... [2022-12-13 21:59:53,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:52" (1/1) ... [2022-12-13 21:59:53,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:52" (1/1) ... [2022-12-13 21:59:53,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:52" (1/1) ... [2022-12-13 21:59:53,029 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:52" (1/1) ... [2022-12-13 21:59:53,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:52" (1/1) ... [2022-12-13 21:59:53,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:59:53,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:59:53,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:59:53,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:59:53,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:52" (1/1) ... [2022-12-13 21:59:53,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:59:53,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f4268-c432-4b27-a168-99398ccae1b9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:59:53,062 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f4268-c432-4b27-a168-99398ccae1b9/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:59:53,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f4268-c432-4b27-a168-99398ccae1b9/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:59:53,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:59:53,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 21:59:53,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:59:53,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:59:53,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:59:53,088 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 21:59:53,088 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 21:59:53,088 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 21:59:53,088 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 21:59:53,089 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 21:59:53,089 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 21:59:53,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:59:53,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 21:59:53,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:59:53,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:59:53,090 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 21:59:53,185 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:59:53,186 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:59:53,327 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:59:53,334 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:59:53,334 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 21:59:53,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:59:53 BoogieIcfgContainer [2022-12-13 21:59:53,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:59:53,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:59:53,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:59:53,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:59:53,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:59:52" (1/3) ... [2022-12-13 21:59:53,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6837ea38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:59:53, skipping insertion in model container [2022-12-13 21:59:53,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:52" (2/3) ... [2022-12-13 21:59:53,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6837ea38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:59:53, skipping insertion in model container [2022-12-13 21:59:53,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:59:53" (3/3) ... [2022-12-13 21:59:53,343 INFO L112 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-13 21:59:53,350 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 21:59:53,358 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:59:53,358 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 21:59:53,358 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 21:59:53,404 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 21:59:53,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-12-13 21:59:53,471 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2022-12-13 21:59:53,471 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:59:53,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-12-13 21:59:53,475 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2022-12-13 21:59:53,478 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2022-12-13 21:59:53,481 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:59:53,489 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 75 transitions, 159 flow [2022-12-13 21:59:53,491 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 75 transitions, 159 flow [2022-12-13 21:59:53,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 75 transitions, 159 flow [2022-12-13 21:59:53,512 INFO L130 PetriNetUnfolder]: 1/75 cut-off events. [2022-12-13 21:59:53,513 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:59:53,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 1/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 37 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2022-12-13 21:59:53,514 INFO L119 LiptonReduction]: Number of co-enabled transitions 1116 [2022-12-13 21:59:54,916 INFO L134 LiptonReduction]: Checked pairs total: 2168 [2022-12-13 21:59:54,916 INFO L136 LiptonReduction]: Total number of compositions: 62 [2022-12-13 21:59:54,926 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:59:54,930 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;@e5ae8ab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:59:54,930 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 21:59:54,934 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2022-12-13 21:59:54,934 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:59:54,934 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:59:54,935 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:59:54,935 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:59:54,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:59:54,939 INFO L85 PathProgramCache]: Analyzing trace with hash -46767655, now seen corresponding path program 1 times [2022-12-13 21:59:54,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:59:54,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856168044] [2022-12-13 21:59:54,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:59:54,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:59:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:59:55,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:59:55,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:59:55,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856168044] [2022-12-13 21:59:55,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856168044] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:59:55,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:59:55,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:59:55,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139395121] [2022-12-13 21:59:55,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:59:55,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:59:55,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:59:55,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:59:55,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:59:55,293 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 154 [2022-12-13 21:59:55,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:55,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:59:55,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 154 [2022-12-13 21:59:55,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:59:55,408 INFO L130 PetriNetUnfolder]: 418/718 cut-off events. [2022-12-13 21:59:55,408 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-12-13 21:59:55,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1461 conditions, 718 events. 418/718 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3403 event pairs, 155 based on Foata normal form. 31/748 useless extension candidates. Maximal degree in co-relation 1450. Up to 416 conditions per place. [2022-12-13 21:59:55,414 INFO L137 encePairwiseOnDemand]: 147/154 looper letters, 23 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2022-12-13 21:59:55,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 133 flow [2022-12-13 21:59:55,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:59:55,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:59:55,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2022-12-13 21:59:55,427 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.564935064935065 [2022-12-13 21:59:55,428 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2022-12-13 21:59:55,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2022-12-13 21:59:55,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:59:55,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2022-12-13 21:59:55,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:55,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:55,437 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:55,439 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 261 transitions. [2022-12-13 21:59:55,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 133 flow [2022-12-13 21:59:55,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 128 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 21:59:55,443 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2022-12-13 21:59:55,444 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2022-12-13 21:59:55,447 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2022-12-13 21:59:55,447 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2022-12-13 21:59:55,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:55,448 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:59:55,448 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:59:55,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:59:55,448 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:59:55,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:59:55,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1449798024, now seen corresponding path program 1 times [2022-12-13 21:59:55,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:59:55,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757368646] [2022-12-13 21:59:55,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:59:55,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:59:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:59:55,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:59:55,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:59:55,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757368646] [2022-12-13 21:59:55,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757368646] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:59:55,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:59:55,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:59:55,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997338395] [2022-12-13 21:59:55,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:59:55,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:59:55,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:59:55,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:59:55,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:59:55,584 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 154 [2022-12-13 21:59:55,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:55,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:59:55,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 154 [2022-12-13 21:59:55,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:59:55,675 INFO L130 PetriNetUnfolder]: 382/663 cut-off events. [2022-12-13 21:59:55,675 INFO L131 PetriNetUnfolder]: For 298/298 co-relation queries the response was YES. [2022-12-13 21:59:55,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1794 conditions, 663 events. 382/663 cut-off events. For 298/298 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3014 event pairs, 106 based on Foata normal form. 10/673 useless extension candidates. Maximal degree in co-relation 1782. Up to 281 conditions per place. [2022-12-13 21:59:55,679 INFO L137 encePairwiseOnDemand]: 147/154 looper letters, 29 selfloop transitions, 7 changer transitions 0/37 dead transitions. [2022-12-13 21:59:55,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 37 transitions, 212 flow [2022-12-13 21:59:55,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:59:55,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:59:55,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 340 transitions. [2022-12-13 21:59:55,683 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.551948051948052 [2022-12-13 21:59:55,683 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 340 transitions. [2022-12-13 21:59:55,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 340 transitions. [2022-12-13 21:59:55,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:59:55,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 340 transitions. [2022-12-13 21:59:55,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:55,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:55,686 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:55,686 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 4 states and 340 transitions. [2022-12-13 21:59:55,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 37 transitions, 212 flow [2022-12-13 21:59:55,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 37 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:59:55,689 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 128 flow [2022-12-13 21:59:55,689 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2022-12-13 21:59:55,689 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2022-12-13 21:59:55,689 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 128 flow [2022-12-13 21:59:55,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:55,690 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:59:55,690 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:59:55,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:59:55,690 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:59:55,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:59:55,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1449797993, now seen corresponding path program 1 times [2022-12-13 21:59:55,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:59:55,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182059120] [2022-12-13 21:59:55,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:59:55,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:59:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:59:55,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:59:55,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:59:55,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182059120] [2022-12-13 21:59:55,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182059120] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:59:55,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:59:55,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:59:55,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613240959] [2022-12-13 21:59:55,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:59:55,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:59:55,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:59:55,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:59:55,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:59:55,803 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 154 [2022-12-13 21:59:55,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:55,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:59:55,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 154 [2022-12-13 21:59:55,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:59:55,880 INFO L130 PetriNetUnfolder]: 354/619 cut-off events. [2022-12-13 21:59:55,881 INFO L131 PetriNetUnfolder]: For 453/453 co-relation queries the response was YES. [2022-12-13 21:59:55,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1809 conditions, 619 events. 354/619 cut-off events. For 453/453 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2745 event pairs, 78 based on Foata normal form. 8/627 useless extension candidates. Maximal degree in co-relation 1794. Up to 310 conditions per place. [2022-12-13 21:59:55,883 INFO L137 encePairwiseOnDemand]: 147/154 looper letters, 31 selfloop transitions, 11 changer transitions 0/43 dead transitions. [2022-12-13 21:59:55,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 43 transitions, 278 flow [2022-12-13 21:59:55,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:59:55,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:59:55,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 343 transitions. [2022-12-13 21:59:55,886 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5568181818181818 [2022-12-13 21:59:55,886 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 343 transitions. [2022-12-13 21:59:55,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 343 transitions. [2022-12-13 21:59:55,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:59:55,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 343 transitions. [2022-12-13 21:59:55,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:55,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:55,890 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:55,890 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 128 flow. Second operand 4 states and 343 transitions. [2022-12-13 21:59:55,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 43 transitions, 278 flow [2022-12-13 21:59:55,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 43 transitions, 273 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:59:55,893 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 206 flow [2022-12-13 21:59:55,893 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2022-12-13 21:59:55,893 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2022-12-13 21:59:55,893 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 206 flow [2022-12-13 21:59:55,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:55,894 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:59:55,894 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:59:55,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 21:59:55,894 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:59:55,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:59:55,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1994078004, now seen corresponding path program 1 times [2022-12-13 21:59:55,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:59:55,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557129646] [2022-12-13 21:59:55,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:59:55,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:59:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:59:55,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:59:55,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:59:55,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557129646] [2022-12-13 21:59:55,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557129646] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:59:55,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:59:55,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:59:55,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284022966] [2022-12-13 21:59:55,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:59:55,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:59:55,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:59:55,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:59:55,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:59:55,993 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 154 [2022-12-13 21:59:55,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:55,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:59:55,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 154 [2022-12-13 21:59:55,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:59:56,083 INFO L130 PetriNetUnfolder]: 332/585 cut-off events. [2022-12-13 21:59:56,083 INFO L131 PetriNetUnfolder]: For 968/968 co-relation queries the response was YES. [2022-12-13 21:59:56,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1987 conditions, 585 events. 332/585 cut-off events. For 968/968 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2631 event pairs, 66 based on Foata normal form. 8/593 useless extension candidates. Maximal degree in co-relation 1968. Up to 280 conditions per place. [2022-12-13 21:59:56,086 INFO L137 encePairwiseOnDemand]: 147/154 looper letters, 33 selfloop transitions, 14 changer transitions 0/48 dead transitions. [2022-12-13 21:59:56,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 48 transitions, 376 flow [2022-12-13 21:59:56,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:59:56,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:59:56,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 344 transitions. [2022-12-13 21:59:56,088 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5584415584415584 [2022-12-13 21:59:56,088 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 344 transitions. [2022-12-13 21:59:56,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 344 transitions. [2022-12-13 21:59:56,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:59:56,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 344 transitions. [2022-12-13 21:59:56,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:56,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:56,092 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:56,092 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 206 flow. Second operand 4 states and 344 transitions. [2022-12-13 21:59:56,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 48 transitions, 376 flow [2022-12-13 21:59:56,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 48 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:59:56,097 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 299 flow [2022-12-13 21:59:56,097 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=299, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2022-12-13 21:59:56,098 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2022-12-13 21:59:56,098 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 299 flow [2022-12-13 21:59:56,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:56,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:59:56,098 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:59:56,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 21:59:56,099 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:59:56,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:59:56,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1686918952, now seen corresponding path program 1 times [2022-12-13 21:59:56,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:59:56,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352462319] [2022-12-13 21:59:56,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:59:56,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:59:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:59:56,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:59:56,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:59:56,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352462319] [2022-12-13 21:59:56,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352462319] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:59:56,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:59:56,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:59:56,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452047123] [2022-12-13 21:59:56,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:59:56,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:59:56,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:59:56,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:59:56,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:59:56,198 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 154 [2022-12-13 21:59:56,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 299 flow. Second operand has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:56,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:59:56,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 154 [2022-12-13 21:59:56,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:59:56,275 INFO L130 PetriNetUnfolder]: 324/567 cut-off events. [2022-12-13 21:59:56,275 INFO L131 PetriNetUnfolder]: For 1491/1491 co-relation queries the response was YES. [2022-12-13 21:59:56,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2257 conditions, 567 events. 324/567 cut-off events. For 1491/1491 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2536 event pairs, 57 based on Foata normal form. 4/563 useless extension candidates. Maximal degree in co-relation 2234. Up to 263 conditions per place. [2022-12-13 21:59:56,278 INFO L137 encePairwiseOnDemand]: 147/154 looper letters, 37 selfloop transitions, 18 changer transitions 0/56 dead transitions. [2022-12-13 21:59:56,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 544 flow [2022-12-13 21:59:56,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:59:56,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:59:56,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 347 transitions. [2022-12-13 21:59:56,280 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5633116883116883 [2022-12-13 21:59:56,280 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 347 transitions. [2022-12-13 21:59:56,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 347 transitions. [2022-12-13 21:59:56,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:59:56,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 347 transitions. [2022-12-13 21:59:56,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:56,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:56,283 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:56,283 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 299 flow. Second operand 4 states and 347 transitions. [2022-12-13 21:59:56,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 544 flow [2022-12-13 21:59:56,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 529 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 21:59:56,290 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 443 flow [2022-12-13 21:59:56,290 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=443, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2022-12-13 21:59:56,291 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2022-12-13 21:59:56,291 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 443 flow [2022-12-13 21:59:56,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:56,292 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:59:56,292 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:59:56,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 21:59:56,292 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:59:56,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:59:56,293 INFO L85 PathProgramCache]: Analyzing trace with hash -742917159, now seen corresponding path program 1 times [2022-12-13 21:59:56,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:59:56,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143585431] [2022-12-13 21:59:56,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:59:56,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:59:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:59:56,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:59:56,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:59:56,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143585431] [2022-12-13 21:59:56,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143585431] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:59:56,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:59:56,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:59:56,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705284955] [2022-12-13 21:59:56,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:59:56,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:59:56,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:59:56,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:59:56,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:59:56,387 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 154 [2022-12-13 21:59:56,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 443 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:56,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:59:56,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 154 [2022-12-13 21:59:56,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:59:56,480 INFO L130 PetriNetUnfolder]: 390/697 cut-off events. [2022-12-13 21:59:56,480 INFO L131 PetriNetUnfolder]: For 3261/3300 co-relation queries the response was YES. [2022-12-13 21:59:56,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2814 conditions, 697 events. 390/697 cut-off events. For 3261/3300 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3323 event pairs, 110 based on Foata normal form. 35/717 useless extension candidates. Maximal degree in co-relation 2786. Up to 251 conditions per place. [2022-12-13 21:59:56,483 INFO L137 encePairwiseOnDemand]: 150/154 looper letters, 23 selfloop transitions, 4 changer transitions 17/52 dead transitions. [2022-12-13 21:59:56,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 52 transitions, 629 flow [2022-12-13 21:59:56,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:59:56,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:59:56,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 355 transitions. [2022-12-13 21:59:56,484 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5762987012987013 [2022-12-13 21:59:56,484 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 355 transitions. [2022-12-13 21:59:56,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 355 transitions. [2022-12-13 21:59:56,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:59:56,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 355 transitions. [2022-12-13 21:59:56,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:56,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:56,486 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:56,486 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 443 flow. Second operand 4 states and 355 transitions. [2022-12-13 21:59:56,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 52 transitions, 629 flow [2022-12-13 21:59:56,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 52 transitions, 622 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:59:56,490 INFO L231 Difference]: Finished difference. Result has 51 places, 28 transitions, 291 flow [2022-12-13 21:59:56,490 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=291, PETRI_PLACES=51, PETRI_TRANSITIONS=28} [2022-12-13 21:59:56,491 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 24 predicate places. [2022-12-13 21:59:56,491 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 28 transitions, 291 flow [2022-12-13 21:59:56,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:56,491 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:59:56,491 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:59:56,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 21:59:56,491 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:59:56,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:59:56,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1447154091, now seen corresponding path program 1 times [2022-12-13 21:59:56,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:59:56,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218136069] [2022-12-13 21:59:56,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:59:56,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:59:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:59:56,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:59:56,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:59:56,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218136069] [2022-12-13 21:59:56,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218136069] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:59:56,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:59:56,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:59:56,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960960429] [2022-12-13 21:59:56,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:59:56,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:59:56,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:59:56,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:59:56,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:59:56,574 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 154 [2022-12-13 21:59:56,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 28 transitions, 291 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:56,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:59:56,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 154 [2022-12-13 21:59:56,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:59:56,646 INFO L130 PetriNetUnfolder]: 117/250 cut-off events. [2022-12-13 21:59:56,647 INFO L131 PetriNetUnfolder]: For 1510/1524 co-relation queries the response was YES. [2022-12-13 21:59:56,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 250 events. 117/250 cut-off events. For 1510/1524 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1106 event pairs, 25 based on Foata normal form. 17/264 useless extension candidates. Maximal degree in co-relation 975. Up to 141 conditions per place. [2022-12-13 21:59:56,648 INFO L137 encePairwiseOnDemand]: 148/154 looper letters, 37 selfloop transitions, 6 changer transitions 8/60 dead transitions. [2022-12-13 21:59:56,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 60 transitions, 680 flow [2022-12-13 21:59:56,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:59:56,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:59:56,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 442 transitions. [2022-12-13 21:59:56,649 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.574025974025974 [2022-12-13 21:59:56,649 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 442 transitions. [2022-12-13 21:59:56,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 442 transitions. [2022-12-13 21:59:56,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:59:56,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 442 transitions. [2022-12-13 21:59:56,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.4) internal successors, (442), 5 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:56,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:56,651 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:56,652 INFO L175 Difference]: Start difference. First operand has 51 places, 28 transitions, 291 flow. Second operand 5 states and 442 transitions. [2022-12-13 21:59:56,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 60 transitions, 680 flow [2022-12-13 21:59:56,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 60 transitions, 608 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-12-13 21:59:56,654 INFO L231 Difference]: Finished difference. Result has 51 places, 33 transitions, 302 flow [2022-12-13 21:59:56,654 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=302, PETRI_PLACES=51, PETRI_TRANSITIONS=33} [2022-12-13 21:59:56,655 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 24 predicate places. [2022-12-13 21:59:56,655 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 33 transitions, 302 flow [2022-12-13 21:59:56,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:56,655 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:59:56,655 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:59:56,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 21:59:56,655 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:59:56,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:59:56,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1284647818, now seen corresponding path program 1 times [2022-12-13 21:59:56,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:59:56,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512051221] [2022-12-13 21:59:56,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:59:56,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:59:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:59:56,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:59:56,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:59:56,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512051221] [2022-12-13 21:59:56,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512051221] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:59:56,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:59:56,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:59:56,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996518138] [2022-12-13 21:59:56,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:59:56,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:59:56,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:59:56,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:59:56,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:59:56,747 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 154 [2022-12-13 21:59:56,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 33 transitions, 302 flow. Second operand has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:56,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:59:56,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 154 [2022-12-13 21:59:56,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:59:56,830 INFO L130 PetriNetUnfolder]: 92/217 cut-off events. [2022-12-13 21:59:56,830 INFO L131 PetriNetUnfolder]: For 1089/1138 co-relation queries the response was YES. [2022-12-13 21:59:56,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 217 events. 92/217 cut-off events. For 1089/1138 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 992 event pairs, 5 based on Foata normal form. 38/252 useless extension candidates. Maximal degree in co-relation 984. Up to 101 conditions per place. [2022-12-13 21:59:56,832 INFO L137 encePairwiseOnDemand]: 148/154 looper letters, 39 selfloop transitions, 10 changer transitions 11/69 dead transitions. [2022-12-13 21:59:56,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 69 transitions, 734 flow [2022-12-13 21:59:56,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:59:56,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:59:56,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 613 transitions. [2022-12-13 21:59:56,833 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5686456400742115 [2022-12-13 21:59:56,834 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 613 transitions. [2022-12-13 21:59:56,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 613 transitions. [2022-12-13 21:59:56,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:59:56,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 613 transitions. [2022-12-13 21:59:56,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.57142857142857) internal successors, (613), 7 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:56,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:56,836 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:56,836 INFO L175 Difference]: Start difference. First operand has 51 places, 33 transitions, 302 flow. Second operand 7 states and 613 transitions. [2022-12-13 21:59:56,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 69 transitions, 734 flow [2022-12-13 21:59:56,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 69 transitions, 734 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 21:59:56,839 INFO L231 Difference]: Finished difference. Result has 60 places, 37 transitions, 369 flow [2022-12-13 21:59:56,839 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=369, PETRI_PLACES=60, PETRI_TRANSITIONS=37} [2022-12-13 21:59:56,839 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 33 predicate places. [2022-12-13 21:59:56,840 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 37 transitions, 369 flow [2022-12-13 21:59:56,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:56,840 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:59:56,840 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:59:56,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 21:59:56,840 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:59:56,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:59:56,841 INFO L85 PathProgramCache]: Analyzing trace with hash 78164360, now seen corresponding path program 1 times [2022-12-13 21:59:56,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:59:56,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699284795] [2022-12-13 21:59:56,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:59:56,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:59:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:59:56,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:59:56,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:59:56,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699284795] [2022-12-13 21:59:56,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699284795] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:59:56,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:59:56,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:59:56,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718451551] [2022-12-13 21:59:56,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:59:56,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:59:56,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:59:56,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:59:56,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:59:56,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 154 [2022-12-13 21:59:56,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 37 transitions, 369 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:56,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:59:56,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 154 [2022-12-13 21:59:56,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:59:57,024 INFO L130 PetriNetUnfolder]: 73/178 cut-off events. [2022-12-13 21:59:57,024 INFO L131 PetriNetUnfolder]: For 1246/1306 co-relation queries the response was YES. [2022-12-13 21:59:57,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1001 conditions, 178 events. 73/178 cut-off events. For 1246/1306 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 763 event pairs, 2 based on Foata normal form. 42/217 useless extension candidates. Maximal degree in co-relation 969. Up to 74 conditions per place. [2022-12-13 21:59:57,026 INFO L137 encePairwiseOnDemand]: 148/154 looper letters, 24 selfloop transitions, 12 changer transitions 25/67 dead transitions. [2022-12-13 21:59:57,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 67 transitions, 779 flow [2022-12-13 21:59:57,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 21:59:57,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 21:59:57,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 773 transitions. [2022-12-13 21:59:57,027 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5577200577200577 [2022-12-13 21:59:57,027 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 773 transitions. [2022-12-13 21:59:57,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 773 transitions. [2022-12-13 21:59:57,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:59:57,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 773 transitions. [2022-12-13 21:59:57,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 85.88888888888889) internal successors, (773), 9 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) [2022-12-13 21:59:57,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 154.0) internal successors, (1540), 10 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:57,031 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 154.0) internal successors, (1540), 10 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:57,031 INFO L175 Difference]: Start difference. First operand has 60 places, 37 transitions, 369 flow. Second operand 9 states and 773 transitions. [2022-12-13 21:59:57,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 67 transitions, 779 flow [2022-12-13 21:59:57,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 67 transitions, 751 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-12-13 21:59:57,034 INFO L231 Difference]: Finished difference. Result has 65 places, 32 transitions, 323 flow [2022-12-13 21:59:57,034 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=323, PETRI_PLACES=65, PETRI_TRANSITIONS=32} [2022-12-13 21:59:57,035 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 38 predicate places. [2022-12-13 21:59:57,035 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 32 transitions, 323 flow [2022-12-13 21:59:57,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:57,035 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:59:57,035 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:59:57,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 21:59:57,035 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:59:57,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:59:57,036 INFO L85 PathProgramCache]: Analyzing trace with hash -2031056743, now seen corresponding path program 1 times [2022-12-13 21:59:57,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:59:57,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683194479] [2022-12-13 21:59:57,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:59:57,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:59:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:59:57,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:59:57,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:59:57,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683194479] [2022-12-13 21:59:57,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683194479] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:59:57,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:59:57,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:59:57,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551171422] [2022-12-13 21:59:57,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:59:57,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:59:57,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:59:57,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:59:57,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:59:57,132 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 154 [2022-12-13 21:59:57,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 32 transitions, 323 flow. Second operand has 5 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:57,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:59:57,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 154 [2022-12-13 21:59:57,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:59:57,195 INFO L130 PetriNetUnfolder]: 74/179 cut-off events. [2022-12-13 21:59:57,195 INFO L131 PetriNetUnfolder]: For 1320/1329 co-relation queries the response was YES. [2022-12-13 21:59:57,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1136 conditions, 179 events. 74/179 cut-off events. For 1320/1329 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 712 event pairs, 15 based on Foata normal form. 3/181 useless extension candidates. Maximal degree in co-relation 1103. Up to 98 conditions per place. [2022-12-13 21:59:57,196 INFO L137 encePairwiseOnDemand]: 148/154 looper letters, 23 selfloop transitions, 5 changer transitions 32/61 dead transitions. [2022-12-13 21:59:57,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 61 transitions, 696 flow [2022-12-13 21:59:57,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:59:57,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:59:57,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 420 transitions. [2022-12-13 21:59:57,197 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2022-12-13 21:59:57,197 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 420 transitions. [2022-12-13 21:59:57,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 420 transitions. [2022-12-13 21:59:57,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:59:57,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 420 transitions. [2022-12-13 21:59:57,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:57,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:57,199 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:57,200 INFO L175 Difference]: Start difference. First operand has 65 places, 32 transitions, 323 flow. Second operand 5 states and 420 transitions. [2022-12-13 21:59:57,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 61 transitions, 696 flow [2022-12-13 21:59:57,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 567 flow, removed 26 selfloop flow, removed 9 redundant places. [2022-12-13 21:59:57,203 INFO L231 Difference]: Finished difference. Result has 58 places, 23 transitions, 172 flow [2022-12-13 21:59:57,203 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=58, PETRI_TRANSITIONS=23} [2022-12-13 21:59:57,204 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 31 predicate places. [2022-12-13 21:59:57,204 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 23 transitions, 172 flow [2022-12-13 21:59:57,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:57,204 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:59:57,204 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:59:57,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 21:59:57,205 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:59:57,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:59:57,205 INFO L85 PathProgramCache]: Analyzing trace with hash -172325043, now seen corresponding path program 2 times [2022-12-13 21:59:57,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:59:57,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458079213] [2022-12-13 21:59:57,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:59:57,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:59:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:59:57,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:59:57,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:59:57,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458079213] [2022-12-13 21:59:57,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458079213] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:59:57,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:59:57,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:59:57,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826894543] [2022-12-13 21:59:57,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:59:57,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:59:57,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:59:57,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:59:57,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:59:57,272 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 154 [2022-12-13 21:59:57,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 23 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:57,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:59:57,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 154 [2022-12-13 21:59:57,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:59:57,302 INFO L130 PetriNetUnfolder]: 13/40 cut-off events. [2022-12-13 21:59:57,302 INFO L131 PetriNetUnfolder]: For 198/198 co-relation queries the response was YES. [2022-12-13 21:59:57,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 40 events. 13/40 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 52 event pairs, 1 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 200. Up to 17 conditions per place. [2022-12-13 21:59:57,303 INFO L137 encePairwiseOnDemand]: 150/154 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2022-12-13 21:59:57,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 29 transitions, 248 flow [2022-12-13 21:59:57,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:59:57,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:59:57,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 426 transitions. [2022-12-13 21:59:57,304 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5532467532467532 [2022-12-13 21:59:57,304 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 426 transitions. [2022-12-13 21:59:57,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 426 transitions. [2022-12-13 21:59:57,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:59:57,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 426 transitions. [2022-12-13 21:59:57,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:57,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:57,306 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:57,306 INFO L175 Difference]: Start difference. First operand has 58 places, 23 transitions, 172 flow. Second operand 5 states and 426 transitions. [2022-12-13 21:59:57,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 29 transitions, 248 flow [2022-12-13 21:59:57,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 182 flow, removed 3 selfloop flow, removed 21 redundant places. [2022-12-13 21:59:57,307 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2022-12-13 21:59:57,307 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2022-12-13 21:59:57,307 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2022-12-13 21:59:57,308 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2022-12-13 21:59:57,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:57,310 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-13 21:59:57,310 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-13 21:59:57,310 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-13 21:59:57,310 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-13 21:59:57,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 21:59:57,310 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:59:57,313 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 21:59:57,313 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 21:59:57,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 09:59:57 BasicIcfg [2022-12-13 21:59:57,315 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 21:59:57,315 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 21:59:57,315 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 21:59:57,316 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 21:59:57,316 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:59:53" (3/4) ... [2022-12-13 21:59:57,318 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 21:59:57,323 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-12-13 21:59:57,323 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-12-13 21:59:57,323 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-12-13 21:59:57,325 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-12-13 21:59:57,326 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 21:59:57,326 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 21:59:57,326 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 21:59:57,346 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f4268-c432-4b27-a168-99398ccae1b9/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 21:59:57,346 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 21:59:57,347 INFO L158 Benchmark]: Toolchain (without parser) took 4814.13ms. Allocated memory was 140.5MB in the beginning and 174.1MB in the end (delta: 33.6MB). Free memory was 107.4MB in the beginning and 83.8MB in the end (delta: 23.6MB). Peak memory consumption was 58.4MB. Max. memory is 16.1GB. [2022-12-13 21:59:57,347 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 140.5MB. Free memory is still 83.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:59:57,347 INFO L158 Benchmark]: CACSL2BoogieTranslator took 435.33ms. Allocated memory is still 140.5MB. Free memory was 106.8MB in the beginning and 83.8MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-12-13 21:59:57,347 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.26ms. Allocated memory is still 140.5MB. Free memory was 83.8MB in the beginning and 81.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:59:57,347 INFO L158 Benchmark]: Boogie Preprocessor took 22.80ms. Allocated memory is still 140.5MB. Free memory was 81.8MB in the beginning and 80.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:59:57,348 INFO L158 Benchmark]: RCFGBuilder took 303.24ms. Allocated memory is still 140.5MB. Free memory was 80.2MB in the beginning and 66.7MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 21:59:57,348 INFO L158 Benchmark]: TraceAbstraction took 3976.79ms. Allocated memory was 140.5MB in the beginning and 174.1MB in the end (delta: 33.6MB). Free memory was 66.1MB in the beginning and 87.0MB in the end (delta: -20.8MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2022-12-13 21:59:57,348 INFO L158 Benchmark]: Witness Printer took 31.08ms. Allocated memory is still 174.1MB. Free memory was 87.0MB in the beginning and 83.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:59:57,349 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 140.5MB. Free memory is still 83.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 435.33ms. Allocated memory is still 140.5MB. Free memory was 106.8MB in the beginning and 83.8MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.26ms. Allocated memory is still 140.5MB. Free memory was 83.8MB in the beginning and 81.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.80ms. Allocated memory is still 140.5MB. Free memory was 81.8MB in the beginning and 80.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 303.24ms. Allocated memory is still 140.5MB. Free memory was 80.2MB in the beginning and 66.7MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3976.79ms. Allocated memory was 140.5MB in the beginning and 174.1MB in the end (delta: 33.6MB). Free memory was 66.1MB in the beginning and 87.0MB in the end (delta: -20.8MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * Witness Printer took 31.08ms. Allocated memory is still 174.1MB. Free memory was 87.0MB in the beginning and 83.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 84 PlacesBefore, 27 PlacesAfterwards, 75 TransitionsBefore, 17 TransitionsAfterwards, 1116 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 62 TotalNumberOfCompositions, 2168 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1145, independent: 1053, independent conditional: 0, independent unconditional: 1053, dependent: 92, dependent conditional: 0, dependent unconditional: 92, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 576, independent: 549, independent conditional: 0, independent unconditional: 549, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1145, independent: 504, independent conditional: 0, independent unconditional: 504, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 576, unknown conditional: 0, unknown unconditional: 576] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.9s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 371 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 276 mSDsluCounter, 70 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25 mSDsCounter, 86 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 583 IncrementalHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 86 mSolverCounterUnsat, 45 mSDtfsCounter, 583 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=443occurred in iteration=5, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 598 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 21:59:57,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f4268-c432-4b27-a168-99398ccae1b9/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE