./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.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_ec8d65b2-02db-489a-a55d-6cea90f4c2bf/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8d65b2-02db-489a-a55d-6cea90f4c2bf/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_ec8d65b2-02db-489a-a55d-6cea90f4c2bf/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8d65b2-02db-489a-a55d-6cea90f4c2bf/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8d65b2-02db-489a-a55d-6cea90f4c2bf/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_ec8d65b2-02db-489a-a55d-6cea90f4c2bf/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 9565dcbef2b519c6326563c41ab6633c2e0b59b7d9ee2c8626de0cd3767b77b1 --- 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 14:59:12,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:59:12,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:59:12,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:59:12,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:59:12,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:59:12,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:59:12,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:59:12,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:59:12,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:59:12,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:59:12,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:59:12,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:59:12,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:59:12,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:59:12,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:59:12,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:59:12,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:59:12,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:59:12,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:59:12,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:59:12,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:59:12,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:59:12,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:59:12,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:59:12,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:59:12,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:59:12,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:59:12,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:59:12,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:59:12,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:59:12,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:59:12,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:59:12,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:59:12,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:59:12,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:59:12,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:59:12,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:59:12,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:59:12,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:59:12,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:59:12,891 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8d65b2-02db-489a-a55d-6cea90f4c2bf/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 14:59:12,906 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:59:12,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:59:12,906 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:59:12,907 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:59:12,907 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:59:12,907 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:59:12,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:59:12,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:59:12,908 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:59:12,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:59:12,908 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:59:12,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:59:12,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:59:12,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:59:12,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:59:12,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:59:12,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:59:12,909 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:59:12,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:59:12,909 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:59:12,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:59:12,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:59:12,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:59:12,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:59:12,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:59:12,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:59:12,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:59:12,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:59:12,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:59:12,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:59:12,911 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:59:12,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:59:12,911 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:59:12,911 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:59:12,911 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:59:12,911 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_ec8d65b2-02db-489a-a55d-6cea90f4c2bf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8d65b2-02db-489a-a55d-6cea90f4c2bf/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9565dcbef2b519c6326563c41ab6633c2e0b59b7d9ee2c8626de0cd3767b77b1 [2022-12-13 14:59:13,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:59:13,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:59:13,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:59:13,153 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:59:13,153 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:59:13,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8d65b2-02db-489a-a55d-6cea90f4c2bf/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i [2022-12-13 14:59:15,814 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:59:15,988 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:59:15,989 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8d65b2-02db-489a-a55d-6cea90f4c2bf/sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i [2022-12-13 14:59:15,999 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8d65b2-02db-489a-a55d-6cea90f4c2bf/bin/uautomizer-uyxdKDjOR8/data/a3dbc5d77/7ca707816b54491f93e15b50a8041126/FLAG95425f91e [2022-12-13 14:59:16,012 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8d65b2-02db-489a-a55d-6cea90f4c2bf/bin/uautomizer-uyxdKDjOR8/data/a3dbc5d77/7ca707816b54491f93e15b50a8041126 [2022-12-13 14:59:16,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:59:16,016 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:59:16,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:59:16,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:59:16,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:59:16,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:59:16" (1/1) ... [2022-12-13 14:59:16,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e877296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:59:16, skipping insertion in model container [2022-12-13 14:59:16,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:59:16" (1/1) ... [2022-12-13 14:59:16,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:59:16,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:59:16,169 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_ec8d65b2-02db-489a-a55d-6cea90f4c2bf/sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i[966,979] [2022-12-13 14:59:16,266 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,266 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,267 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,267 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,267 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,267 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,267 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,268 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,268 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,268 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,268 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,269 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,269 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,271 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,271 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,272 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,272 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,273 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,274 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,274 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,274 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,276 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,276 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,276 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,277 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,277 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,277 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,278 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,278 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,278 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,278 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,280 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,280 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,280 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,286 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,286 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,286 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,288 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,289 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,294 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:59:16,304 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:59:16,312 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_ec8d65b2-02db-489a-a55d-6cea90f4c2bf/sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i[966,979] [2022-12-13 14:59:16,326 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,327 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,327 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,327 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,327 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,327 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,327 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,327 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,329 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,330 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,330 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,330 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,331 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,332 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,332 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,332 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,332 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,333 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,334 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,334 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,334 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,334 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,335 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,335 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,335 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,335 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,335 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,337 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,337 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,337 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,340 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,340 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,340 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,342 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,342 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:59:16,346 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:59:16,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:59:16,369 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:59:16,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:59:16 WrapperNode [2022-12-13 14:59:16,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:59:16,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:59:16,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:59:16,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:59:16,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:59:16" (1/1) ... [2022-12-13 14:59:16,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:59:16" (1/1) ... [2022-12-13 14:59:16,409 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 158 [2022-12-13 14:59:16,409 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:59:16,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:59:16,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:59:16,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:59:16,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:59:16" (1/1) ... [2022-12-13 14:59:16,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:59:16" (1/1) ... [2022-12-13 14:59:16,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:59:16" (1/1) ... [2022-12-13 14:59:16,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:59:16" (1/1) ... [2022-12-13 14:59:16,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:59:16" (1/1) ... [2022-12-13 14:59:16,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:59:16" (1/1) ... [2022-12-13 14:59:16,439 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:59:16" (1/1) ... [2022-12-13 14:59:16,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:59:16" (1/1) ... [2022-12-13 14:59:16,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:59:16,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:59:16,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:59:16,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:59:16,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:59:16" (1/1) ... [2022-12-13 14:59:16,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:59:16,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8d65b2-02db-489a-a55d-6cea90f4c2bf/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:59:16,470 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8d65b2-02db-489a-a55d-6cea90f4c2bf/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:59:16,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8d65b2-02db-489a-a55d-6cea90f4c2bf/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:59:16,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 14:59:16,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 14:59:16,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:59:16,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 14:59:16,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 14:59:16,506 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 14:59:16,506 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 14:59:16,506 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 14:59:16,506 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 14:59:16,506 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 14:59:16,507 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 14:59:16,507 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-13 14:59:16,507 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-13 14:59:16,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:59:16,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 14:59:16,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:59:16,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:59:16,509 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 14:59:16,638 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:59:16,641 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:59:16,903 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:59:17,015 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:59:17,016 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 14:59:17,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:59:17 BoogieIcfgContainer [2022-12-13 14:59:17,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:59:17,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:59:17,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:59:17,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:59:17,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:59:16" (1/3) ... [2022-12-13 14:59:17,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb870a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:59:17, skipping insertion in model container [2022-12-13 14:59:17,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:59:16" (2/3) ... [2022-12-13 14:59:17,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb870a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:59:17, skipping insertion in model container [2022-12-13 14:59:17,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:59:17" (3/3) ... [2022-12-13 14:59:17,027 INFO L112 eAbstractionObserver]: Analyzing ICFG mix030_power.opt_pso.opt_rmo.opt.i [2022-12-13 14:59:17,036 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 14:59:17,047 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:59:17,047 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 14:59:17,048 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 14:59:17,098 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 14:59:17,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 135 transitions, 290 flow [2022-12-13 14:59:17,191 INFO L130 PetriNetUnfolder]: 2/131 cut-off events. [2022-12-13 14:59:17,191 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:59:17,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 131 events. 2/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 69 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-12-13 14:59:17,197 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 135 transitions, 290 flow [2022-12-13 14:59:17,202 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 131 transitions, 274 flow [2022-12-13 14:59:17,205 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 14:59:17,215 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 131 transitions, 274 flow [2022-12-13 14:59:17,217 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 131 transitions, 274 flow [2022-12-13 14:59:17,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 131 transitions, 274 flow [2022-12-13 14:59:17,248 INFO L130 PetriNetUnfolder]: 2/131 cut-off events. [2022-12-13 14:59:17,249 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:59:17,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 131 events. 2/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 69 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-12-13 14:59:17,253 INFO L119 LiptonReduction]: Number of co-enabled transitions 3218 [2022-12-13 14:59:20,155 INFO L134 LiptonReduction]: Checked pairs total: 8722 [2022-12-13 14:59:20,155 INFO L136 LiptonReduction]: Total number of compositions: 111 [2022-12-13 14:59:20,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:59:20,168 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;@410d6349, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:59:20,169 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 14:59:20,172 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2022-12-13 14:59:20,172 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:59:20,172 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:59:20,172 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:59:20,173 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:59:20,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:59:20,176 INFO L85 PathProgramCache]: Analyzing trace with hash 814413857, now seen corresponding path program 1 times [2022-12-13 14:59:20,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:59:20,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771310135] [2022-12-13 14:59:20,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:59:20,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:59:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:59:20,489 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 14:59:20,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:59:20,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771310135] [2022-12-13 14:59:20,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771310135] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:59:20,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:59:20,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 14:59:20,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25037591] [2022-12-13 14:59:20,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:59:20,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:59:20,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:59:20,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:59:20,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:59:20,521 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 246 [2022-12-13 14:59:20,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:59:20,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:59:20,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 246 [2022-12-13 14:59:20,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:59:21,062 INFO L130 PetriNetUnfolder]: 3415/5061 cut-off events. [2022-12-13 14:59:21,062 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 14:59:21,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9889 conditions, 5061 events. 3415/5061 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 29132 event pairs, 649 based on Foata normal form. 0/4829 useless extension candidates. Maximal degree in co-relation 9877. Up to 3703 conditions per place. [2022-12-13 14:59:21,085 INFO L137 encePairwiseOnDemand]: 242/246 looper letters, 35 selfloop transitions, 2 changer transitions 2/44 dead transitions. [2022-12-13 14:59:21,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 44 transitions, 181 flow [2022-12-13 14:59:21,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:59:21,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:59:21,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2022-12-13 14:59:21,100 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5447154471544715 [2022-12-13 14:59:21,101 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 402 transitions. [2022-12-13 14:59:21,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 402 transitions. [2022-12-13 14:59:21,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:59:21,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 402 transitions. [2022-12-13 14:59:21,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 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 14:59:21,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 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 14:59:21,118 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 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 14:59:21,120 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 74 flow. Second operand 3 states and 402 transitions. [2022-12-13 14:59:21,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 44 transitions, 181 flow [2022-12-13 14:59:21,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 176 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 14:59:21,126 INFO L231 Difference]: Finished difference. Result has 40 places, 28 transitions, 68 flow [2022-12-13 14:59:21,128 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=40, PETRI_TRANSITIONS=28} [2022-12-13 14:59:21,132 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2022-12-13 14:59:21,132 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 68 flow [2022-12-13 14:59:21,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:59:21,133 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:59:21,133 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:59:21,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 14:59:21,134 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:59:21,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:59:21,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1536838445, now seen corresponding path program 1 times [2022-12-13 14:59:21,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:59:21,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111109605] [2022-12-13 14:59:21,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:59:21,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:59:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:59:21,682 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 14:59:21,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:59:21,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111109605] [2022-12-13 14:59:21,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111109605] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:59:21,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:59:21,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:59:21,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469021392] [2022-12-13 14:59:21,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:59:21,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:59:21,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:59:21,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:59:21,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:59:21,750 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2022-12-13 14:59:21,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 0 states have call successors, (0), 0 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 14:59:21,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:59:21,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2022-12-13 14:59:21,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:59:23,503 INFO L130 PetriNetUnfolder]: 12371/17436 cut-off events. [2022-12-13 14:59:23,503 INFO L131 PetriNetUnfolder]: For 852/852 co-relation queries the response was YES. [2022-12-13 14:59:23,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35568 conditions, 17436 events. 12371/17436 cut-off events. For 852/852 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 100553 event pairs, 963 based on Foata normal form. 752/18188 useless extension candidates. Maximal degree in co-relation 35558. Up to 10255 conditions per place. [2022-12-13 14:59:23,560 INFO L137 encePairwiseOnDemand]: 232/246 looper letters, 55 selfloop transitions, 14 changer transitions 44/114 dead transitions. [2022-12-13 14:59:23,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 114 transitions, 486 flow [2022-12-13 14:59:23,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:59:23,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 14:59:23,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 858 transitions. [2022-12-13 14:59:23,563 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49825783972125437 [2022-12-13 14:59:23,564 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 858 transitions. [2022-12-13 14:59:23,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 858 transitions. [2022-12-13 14:59:23,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:59:23,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 858 transitions. [2022-12-13 14:59:23,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 122.57142857142857) internal successors, (858), 7 states have internal predecessors, (858), 0 states have call successors, (0), 0 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 14:59:23,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 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 14:59:23,571 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 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 14:59:23,572 INFO L175 Difference]: Start difference. First operand has 40 places, 28 transitions, 68 flow. Second operand 7 states and 858 transitions. [2022-12-13 14:59:23,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 114 transitions, 486 flow [2022-12-13 14:59:23,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 114 transitions, 472 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:59:23,575 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 194 flow [2022-12-13 14:59:23,575 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=194, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2022-12-13 14:59:23,575 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2022-12-13 14:59:23,575 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 194 flow [2022-12-13 14:59:23,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 0 states have call successors, (0), 0 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 14:59:23,576 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:59:23,576 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:59:23,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 14:59:23,576 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:59:23,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:59:23,577 INFO L85 PathProgramCache]: Analyzing trace with hash 397307419, now seen corresponding path program 1 times [2022-12-13 14:59:23,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:59:23,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154342516] [2022-12-13 14:59:23,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:59:23,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:59:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:59:24,040 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 14:59:24,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:59:24,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154342516] [2022-12-13 14:59:24,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154342516] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:59:24,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:59:24,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:59:24,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315673327] [2022-12-13 14:59:24,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:59:24,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:59:24,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:59:24,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:59:24,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:59:24,109 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2022-12-13 14:59:24,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 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 14:59:24,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:59:24,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2022-12-13 14:59:24,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:59:25,633 INFO L130 PetriNetUnfolder]: 10709/14820 cut-off events. [2022-12-13 14:59:25,633 INFO L131 PetriNetUnfolder]: For 14585/14585 co-relation queries the response was YES. [2022-12-13 14:59:25,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47712 conditions, 14820 events. 10709/14820 cut-off events. For 14585/14585 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 77428 event pairs, 2169 based on Foata normal form. 648/15466 useless extension candidates. Maximal degree in co-relation 47696. Up to 6991 conditions per place. [2022-12-13 14:59:25,692 INFO L137 encePairwiseOnDemand]: 233/246 looper letters, 56 selfloop transitions, 19 changer transitions 47/123 dead transitions. [2022-12-13 14:59:25,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 123 transitions, 816 flow [2022-12-13 14:59:25,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:59:25,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 14:59:25,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 839 transitions. [2022-12-13 14:59:25,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48722415795586527 [2022-12-13 14:59:25,695 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 839 transitions. [2022-12-13 14:59:25,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 839 transitions. [2022-12-13 14:59:25,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:59:25,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 839 transitions. [2022-12-13 14:59:25,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 119.85714285714286) internal successors, (839), 7 states have internal predecessors, (839), 0 states have call successors, (0), 0 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 14:59:25,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 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 14:59:25,700 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 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 14:59:25,700 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 194 flow. Second operand 7 states and 839 transitions. [2022-12-13 14:59:25,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 123 transitions, 816 flow [2022-12-13 14:59:25,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 123 transitions, 812 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 14:59:25,748 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 398 flow [2022-12-13 14:59:25,748 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=398, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2022-12-13 14:59:25,749 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2022-12-13 14:59:25,749 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 398 flow [2022-12-13 14:59:25,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 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 14:59:25,749 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:59:25,749 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:59:25,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 14:59:25,750 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:59:25,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:59:25,750 INFO L85 PathProgramCache]: Analyzing trace with hash 283337267, now seen corresponding path program 1 times [2022-12-13 14:59:25,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:59:25,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618323404] [2022-12-13 14:59:25,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:59:25,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:59:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:59:26,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:59:26,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:59:26,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618323404] [2022-12-13 14:59:26,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618323404] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:59:26,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:59:26,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:59:26,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234227939] [2022-12-13 14:59:26,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:59:26,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:59:26,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:59:26,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:59:26,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:59:26,148 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 246 [2022-12-13 14:59:26,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 398 flow. Second operand has 5 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 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 14:59:26,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:59:26,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 246 [2022-12-13 14:59:26,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:59:27,609 INFO L130 PetriNetUnfolder]: 10255/14722 cut-off events. [2022-12-13 14:59:27,609 INFO L131 PetriNetUnfolder]: For 37703/38897 co-relation queries the response was YES. [2022-12-13 14:59:27,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56706 conditions, 14722 events. 10255/14722 cut-off events. For 37703/38897 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 85431 event pairs, 2882 based on Foata normal form. 1170/15402 useless extension candidates. Maximal degree in co-relation 56683. Up to 10929 conditions per place. [2022-12-13 14:59:27,665 INFO L137 encePairwiseOnDemand]: 241/246 looper letters, 59 selfloop transitions, 5 changer transitions 26/104 dead transitions. [2022-12-13 14:59:27,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 104 transitions, 860 flow [2022-12-13 14:59:27,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:59:27,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 14:59:27,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 654 transitions. [2022-12-13 14:59:27,666 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5317073170731708 [2022-12-13 14:59:27,667 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 654 transitions. [2022-12-13 14:59:27,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 654 transitions. [2022-12-13 14:59:27,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:59:27,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 654 transitions. [2022-12-13 14:59:27,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.8) internal successors, (654), 5 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:59:27,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 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 14:59:27,670 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 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 14:59:27,670 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 398 flow. Second operand 5 states and 654 transitions. [2022-12-13 14:59:27,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 104 transitions, 860 flow [2022-12-13 14:59:27,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 104 transitions, 851 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-13 14:59:27,740 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 452 flow [2022-12-13 14:59:27,740 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=452, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2022-12-13 14:59:27,741 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2022-12-13 14:59:27,741 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 452 flow [2022-12-13 14:59:27,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 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 14:59:27,741 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:59:27,741 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:59:27,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 14:59:27,742 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:59:27,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:59:27,742 INFO L85 PathProgramCache]: Analyzing trace with hash 193003753, now seen corresponding path program 1 times [2022-12-13 14:59:27,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:59:27,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116108227] [2022-12-13 14:59:27,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:59:27,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:59:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:59:28,019 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 14:59:28,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:59:28,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116108227] [2022-12-13 14:59:28,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116108227] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:59:28,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:59:28,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:59:28,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684799784] [2022-12-13 14:59:28,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:59:28,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:59:28,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:59:28,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:59:28,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:59:28,030 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 246 [2022-12-13 14:59:28,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 452 flow. Second operand has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 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 14:59:28,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:59:28,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 246 [2022-12-13 14:59:28,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:59:29,902 INFO L130 PetriNetUnfolder]: 11575/16153 cut-off events. [2022-12-13 14:59:29,903 INFO L131 PetriNetUnfolder]: For 45195/47764 co-relation queries the response was YES. [2022-12-13 14:59:29,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65468 conditions, 16153 events. 11575/16153 cut-off events. For 45195/47764 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 91741 event pairs, 4970 based on Foata normal form. 1451/16685 useless extension candidates. Maximal degree in co-relation 65442. Up to 11506 conditions per place. [2022-12-13 14:59:29,975 INFO L137 encePairwiseOnDemand]: 239/246 looper letters, 60 selfloop transitions, 11 changer transitions 26/111 dead transitions. [2022-12-13 14:59:29,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 111 transitions, 1002 flow [2022-12-13 14:59:29,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 14:59:29,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 14:59:29,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 768 transitions. [2022-12-13 14:59:29,977 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5203252032520326 [2022-12-13 14:59:29,977 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 768 transitions. [2022-12-13 14:59:29,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 768 transitions. [2022-12-13 14:59:29,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:59:29,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 768 transitions. [2022-12-13 14:59:29,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 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 14:59:29,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 0 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 14:59:29,981 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 0 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 14:59:29,981 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 452 flow. Second operand 6 states and 768 transitions. [2022-12-13 14:59:29,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 111 transitions, 1002 flow [2022-12-13 14:59:30,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 111 transitions, 973 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-12-13 14:59:30,078 INFO L231 Difference]: Finished difference. Result has 61 places, 67 transitions, 565 flow [2022-12-13 14:59:30,078 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=565, PETRI_PLACES=61, PETRI_TRANSITIONS=67} [2022-12-13 14:59:30,079 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2022-12-13 14:59:30,079 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 67 transitions, 565 flow [2022-12-13 14:59:30,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 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 14:59:30,079 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:59:30,079 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:59:30,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 14:59:30,079 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:59:30,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:59:30,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1810373716, now seen corresponding path program 1 times [2022-12-13 14:59:30,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:59:30,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874893024] [2022-12-13 14:59:30,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:59:30,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:59:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:59:30,562 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 14:59:30,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:59:30,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874893024] [2022-12-13 14:59:30,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874893024] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:59:30,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:59:30,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:59:30,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446877801] [2022-12-13 14:59:30,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:59:30,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:59:30,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:59:30,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:59:30,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:59:30,619 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 246 [2022-12-13 14:59:30,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 67 transitions, 565 flow. Second operand has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 0 states have call successors, (0), 0 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 14:59:30,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:59:30,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 246 [2022-12-13 14:59:30,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:59:32,576 INFO L130 PetriNetUnfolder]: 15191/20894 cut-off events. [2022-12-13 14:59:32,577 INFO L131 PetriNetUnfolder]: For 75309/75309 co-relation queries the response was YES. [2022-12-13 14:59:32,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93278 conditions, 20894 events. 15191/20894 cut-off events. For 75309/75309 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 110175 event pairs, 2973 based on Foata normal form. 614/21508 useless extension candidates. Maximal degree in co-relation 93251. Up to 15413 conditions per place. [2022-12-13 14:59:32,683 INFO L137 encePairwiseOnDemand]: 234/246 looper letters, 135 selfloop transitions, 30 changer transitions 58/223 dead transitions. [2022-12-13 14:59:32,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 223 transitions, 2250 flow [2022-12-13 14:59:32,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 14:59:32,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 14:59:32,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 947 transitions. [2022-12-13 14:59:32,686 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4811991869918699 [2022-12-13 14:59:32,686 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 947 transitions. [2022-12-13 14:59:32,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 947 transitions. [2022-12-13 14:59:32,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:59:32,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 947 transitions. [2022-12-13 14:59:32,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 118.375) internal successors, (947), 8 states have internal predecessors, (947), 0 states have call successors, (0), 0 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 14:59:32,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 246.0) internal successors, (2214), 9 states have internal predecessors, (2214), 0 states have call successors, (0), 0 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 14:59:32,691 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 246.0) internal successors, (2214), 9 states have internal predecessors, (2214), 0 states have call successors, (0), 0 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 14:59:32,691 INFO L175 Difference]: Start difference. First operand has 61 places, 67 transitions, 565 flow. Second operand 8 states and 947 transitions. [2022-12-13 14:59:32,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 223 transitions, 2250 flow [2022-12-13 14:59:32,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 223 transitions, 2213 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-12-13 14:59:32,789 INFO L231 Difference]: Finished difference. Result has 68 places, 91 transitions, 959 flow [2022-12-13 14:59:32,789 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=959, PETRI_PLACES=68, PETRI_TRANSITIONS=91} [2022-12-13 14:59:32,789 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2022-12-13 14:59:32,790 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 91 transitions, 959 flow [2022-12-13 14:59:32,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 0 states have call successors, (0), 0 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 14:59:32,790 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:59:32,790 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 14:59:32,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 14:59:32,790 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:59:32,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:59:32,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1152208414, now seen corresponding path program 1 times [2022-12-13 14:59:32,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:59:32,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581573374] [2022-12-13 14:59:32,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:59:32,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:59:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:59:33,395 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 14:59:33,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:59:33,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581573374] [2022-12-13 14:59:33,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581573374] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:59:33,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:59:33,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:59:33,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106454111] [2022-12-13 14:59:33,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:59:33,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:59:33,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:59:33,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:59:33,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:59:33,490 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 246 [2022-12-13 14:59:33,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 91 transitions, 959 flow. Second operand has 6 states, 6 states have (on average 106.83333333333333) internal successors, (641), 6 states have internal predecessors, (641), 0 states have call successors, (0), 0 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 14:59:33,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:59:33,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 246 [2022-12-13 14:59:33,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:59:35,974 INFO L130 PetriNetUnfolder]: 15115/20752 cut-off events. [2022-12-13 14:59:35,974 INFO L131 PetriNetUnfolder]: For 99900/99900 co-relation queries the response was YES. [2022-12-13 14:59:36,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104711 conditions, 20752 events. 15115/20752 cut-off events. For 99900/99900 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 109053 event pairs, 1526 based on Foata normal form. 328/21080 useless extension candidates. Maximal degree in co-relation 104680. Up to 12219 conditions per place. [2022-12-13 14:59:36,135 INFO L137 encePairwiseOnDemand]: 231/246 looper letters, 116 selfloop transitions, 93 changer transitions 43/252 dead transitions. [2022-12-13 14:59:36,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 252 transitions, 2858 flow [2022-12-13 14:59:36,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 14:59:36,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 14:59:36,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1185 transitions. [2022-12-13 14:59:36,138 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4817073170731707 [2022-12-13 14:59:36,138 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1185 transitions. [2022-12-13 14:59:36,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1185 transitions. [2022-12-13 14:59:36,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:59:36,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1185 transitions. [2022-12-13 14:59:36,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 118.5) internal successors, (1185), 10 states have internal predecessors, (1185), 0 states have call successors, (0), 0 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 14:59:36,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 246.0) internal successors, (2706), 11 states have internal predecessors, (2706), 0 states have call successors, (0), 0 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 14:59:36,142 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 246.0) internal successors, (2706), 11 states have internal predecessors, (2706), 0 states have call successors, (0), 0 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 14:59:36,142 INFO L175 Difference]: Start difference. First operand has 68 places, 91 transitions, 959 flow. Second operand 10 states and 1185 transitions. [2022-12-13 14:59:36,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 252 transitions, 2858 flow [2022-12-13 14:59:36,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 252 transitions, 2773 flow, removed 19 selfloop flow, removed 3 redundant places. [2022-12-13 14:59:36,337 INFO L231 Difference]: Finished difference. Result has 80 places, 148 transitions, 1984 flow [2022-12-13 14:59:36,338 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1984, PETRI_PLACES=80, PETRI_TRANSITIONS=148} [2022-12-13 14:59:36,338 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 37 predicate places. [2022-12-13 14:59:36,338 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 148 transitions, 1984 flow [2022-12-13 14:59:36,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 106.83333333333333) internal successors, (641), 6 states have internal predecessors, (641), 0 states have call successors, (0), 0 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 14:59:36,339 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:59:36,339 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 14:59:36,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 14:59:36,339 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:59:36,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:59:36,339 INFO L85 PathProgramCache]: Analyzing trace with hash 716976272, now seen corresponding path program 2 times [2022-12-13 14:59:36,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:59:36,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516459935] [2022-12-13 14:59:36,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:59:36,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:59:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:59:36,752 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 14:59:36,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:59:36,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516459935] [2022-12-13 14:59:36,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516459935] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:59:36,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:59:36,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:59:36,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697025535] [2022-12-13 14:59:36,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:59:36,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:59:36,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:59:36,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:59:36,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:59:36,782 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 246 [2022-12-13 14:59:36,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 148 transitions, 1984 flow. Second operand has 6 states, 6 states have (on average 120.66666666666667) internal successors, (724), 6 states have internal predecessors, (724), 0 states have call successors, (0), 0 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 14:59:36,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:59:36,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 246 [2022-12-13 14:59:36,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:59:39,512 INFO L130 PetriNetUnfolder]: 14012/19869 cut-off events. [2022-12-13 14:59:39,512 INFO L131 PetriNetUnfolder]: For 181948/186203 co-relation queries the response was YES. [2022-12-13 14:59:39,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122881 conditions, 19869 events. 14012/19869 cut-off events. For 181948/186203 co-relation queries the response was YES. Maximal size of possible extension queue 839. Compared 117692 event pairs, 1963 based on Foata normal form. 1721/20864 useless extension candidates. Maximal degree in co-relation 122842. Up to 12387 conditions per place. [2022-12-13 14:59:39,665 INFO L137 encePairwiseOnDemand]: 238/246 looper letters, 142 selfloop transitions, 45 changer transitions 33/255 dead transitions. [2022-12-13 14:59:39,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 255 transitions, 3566 flow [2022-12-13 14:59:39,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:59:39,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 14:59:39,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1156 transitions. [2022-12-13 14:59:39,668 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5221318879855466 [2022-12-13 14:59:39,668 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1156 transitions. [2022-12-13 14:59:39,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1156 transitions. [2022-12-13 14:59:39,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:59:39,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1156 transitions. [2022-12-13 14:59:39,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.44444444444446) internal successors, (1156), 9 states have internal predecessors, (1156), 0 states have call successors, (0), 0 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 14:59:39,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 0 states have call successors, (0), 0 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 14:59:39,673 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 0 states have call successors, (0), 0 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 14:59:39,674 INFO L175 Difference]: Start difference. First operand has 80 places, 148 transitions, 1984 flow. Second operand 9 states and 1156 transitions. [2022-12-13 14:59:39,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 255 transitions, 3566 flow [2022-12-13 14:59:39,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 255 transitions, 3528 flow, removed 19 selfloop flow, removed 3 redundant places. [2022-12-13 14:59:39,927 INFO L231 Difference]: Finished difference. Result has 87 places, 174 transitions, 2598 flow [2022-12-13 14:59:39,928 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=1958, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2598, PETRI_PLACES=87, PETRI_TRANSITIONS=174} [2022-12-13 14:59:39,928 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 44 predicate places. [2022-12-13 14:59:39,928 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 174 transitions, 2598 flow [2022-12-13 14:59:39,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.66666666666667) internal successors, (724), 6 states have internal predecessors, (724), 0 states have call successors, (0), 0 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 14:59:39,929 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:59:39,929 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:59:39,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 14:59:39,929 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:59:39,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:59:39,929 INFO L85 PathProgramCache]: Analyzing trace with hash -745216467, now seen corresponding path program 1 times [2022-12-13 14:59:39,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:59:39,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898246378] [2022-12-13 14:59:39,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:59:39,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:59:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:59:40,503 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 14:59:40,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:59:40,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898246378] [2022-12-13 14:59:40,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898246378] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:59:40,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:59:40,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:59:40,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651600318] [2022-12-13 14:59:40,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:59:40,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:59:40,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:59:40,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:59:40,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:59:40,566 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 246 [2022-12-13 14:59:40,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 174 transitions, 2598 flow. Second operand has 7 states, 7 states have (on average 119.42857142857143) internal successors, (836), 7 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:59:40,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:59:40,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 246 [2022-12-13 14:59:40,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:59:43,504 INFO L130 PetriNetUnfolder]: 15032/21343 cut-off events. [2022-12-13 14:59:43,504 INFO L131 PetriNetUnfolder]: For 250519/255445 co-relation queries the response was YES. [2022-12-13 14:59:43,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141849 conditions, 21343 events. 15032/21343 cut-off events. For 250519/255445 co-relation queries the response was YES. Maximal size of possible extension queue 898. Compared 127706 event pairs, 2452 based on Foata normal form. 1673/22256 useless extension candidates. Maximal degree in co-relation 141805. Up to 13570 conditions per place. [2022-12-13 14:59:43,641 INFO L137 encePairwiseOnDemand]: 237/246 looper letters, 147 selfloop transitions, 47 changer transitions 18/247 dead transitions. [2022-12-13 14:59:43,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 247 transitions, 3846 flow [2022-12-13 14:59:43,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:59:43,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 14:59:43,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 899 transitions. [2022-12-13 14:59:43,643 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5220673635307782 [2022-12-13 14:59:43,643 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 899 transitions. [2022-12-13 14:59:43,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 899 transitions. [2022-12-13 14:59:43,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:59:43,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 899 transitions. [2022-12-13 14:59:43,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 128.42857142857142) internal successors, (899), 7 states have internal predecessors, (899), 0 states have call successors, (0), 0 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 14:59:43,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 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 14:59:43,646 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 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 14:59:43,646 INFO L175 Difference]: Start difference. First operand has 87 places, 174 transitions, 2598 flow. Second operand 7 states and 899 transitions. [2022-12-13 14:59:43,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 247 transitions, 3846 flow [2022-12-13 14:59:44,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 247 transitions, 3730 flow, removed 58 selfloop flow, removed 5 redundant places. [2022-12-13 14:59:44,398 INFO L231 Difference]: Finished difference. Result has 87 places, 184 transitions, 2874 flow [2022-12-13 14:59:44,399 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=2524, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2874, PETRI_PLACES=87, PETRI_TRANSITIONS=184} [2022-12-13 14:59:44,399 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 44 predicate places. [2022-12-13 14:59:44,399 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 184 transitions, 2874 flow [2022-12-13 14:59:44,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 119.42857142857143) internal successors, (836), 7 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:59:44,400 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:59:44,400 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:59:44,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 14:59:44,400 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:59:44,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:59:44,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1140499266, now seen corresponding path program 1 times [2022-12-13 14:59:44,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:59:44,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839452959] [2022-12-13 14:59:44,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:59:44,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:59:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:59:44,810 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 14:59:44,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:59:44,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839452959] [2022-12-13 14:59:44,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839452959] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:59:44,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:59:44,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:59:44,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032756720] [2022-12-13 14:59:44,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:59:44,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:59:44,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:59:44,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:59:44,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:59:44,874 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 246 [2022-12-13 14:59:44,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 184 transitions, 2874 flow. Second operand has 7 states, 7 states have (on average 106.57142857142857) internal successors, (746), 7 states have internal predecessors, (746), 0 states have call successors, (0), 0 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 14:59:44,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:59:44,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 246 [2022-12-13 14:59:44,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:59:48,188 INFO L130 PetriNetUnfolder]: 18776/25709 cut-off events. [2022-12-13 14:59:48,188 INFO L131 PetriNetUnfolder]: For 230201/230201 co-relation queries the response was YES. [2022-12-13 14:59:48,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161017 conditions, 25709 events. 18776/25709 cut-off events. For 230201/230201 co-relation queries the response was YES. Maximal size of possible extension queue 835. Compared 138545 event pairs, 3400 based on Foata normal form. 192/25901 useless extension candidates. Maximal degree in co-relation 160973. Up to 22284 conditions per place. [2022-12-13 14:59:48,399 INFO L137 encePairwiseOnDemand]: 238/246 looper letters, 183 selfloop transitions, 33 changer transitions 24/240 dead transitions. [2022-12-13 14:59:48,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 240 transitions, 3865 flow [2022-12-13 14:59:48,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 14:59:48,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 14:59:48,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 703 transitions. [2022-12-13 14:59:48,402 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47628726287262874 [2022-12-13 14:59:48,402 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 703 transitions. [2022-12-13 14:59:48,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 703 transitions. [2022-12-13 14:59:48,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:59:48,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 703 transitions. [2022-12-13 14:59:48,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 117.16666666666667) internal successors, (703), 6 states have internal predecessors, (703), 0 states have call successors, (0), 0 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 14:59:48,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 0 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 14:59:48,406 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 0 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 14:59:48,406 INFO L175 Difference]: Start difference. First operand has 87 places, 184 transitions, 2874 flow. Second operand 6 states and 703 transitions. [2022-12-13 14:59:48,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 240 transitions, 3865 flow [2022-12-13 14:59:49,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 240 transitions, 3724 flow, removed 29 selfloop flow, removed 5 redundant places. [2022-12-13 14:59:49,014 INFO L231 Difference]: Finished difference. Result has 88 places, 184 transitions, 2853 flow [2022-12-13 14:59:49,014 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=2751, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2853, PETRI_PLACES=88, PETRI_TRANSITIONS=184} [2022-12-13 14:59:49,015 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 45 predicate places. [2022-12-13 14:59:49,015 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 184 transitions, 2853 flow [2022-12-13 14:59:49,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.57142857142857) internal successors, (746), 7 states have internal predecessors, (746), 0 states have call successors, (0), 0 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 14:59:49,015 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:59:49,015 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:59:49,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 14:59:49,015 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:59:49,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:59:49,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1142301141, now seen corresponding path program 2 times [2022-12-13 14:59:49,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:59:49,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065570562] [2022-12-13 14:59:49,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:59:49,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:59:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:59:49,829 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 14:59:49,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:59:49,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065570562] [2022-12-13 14:59:49,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065570562] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:59:49,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:59:49,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 14:59:49,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552227021] [2022-12-13 14:59:49,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:59:49,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 14:59:49,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:59:49,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 14:59:49,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:59:49,914 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 246 [2022-12-13 14:59:49,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 184 transitions, 2853 flow. Second operand has 8 states, 8 states have (on average 105.25) internal successors, (842), 8 states have internal predecessors, (842), 0 states have call successors, (0), 0 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 14:59:49,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:59:49,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 246 [2022-12-13 14:59:49,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:59:53,538 INFO L130 PetriNetUnfolder]: 20607/28274 cut-off events. [2022-12-13 14:59:53,538 INFO L131 PetriNetUnfolder]: For 240506/240506 co-relation queries the response was YES. [2022-12-13 14:59:53,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175566 conditions, 28274 events. 20607/28274 cut-off events. For 240506/240506 co-relation queries the response was YES. Maximal size of possible extension queue 917. Compared 155462 event pairs, 2874 based on Foata normal form. 348/28622 useless extension candidates. Maximal degree in co-relation 175521. Up to 17561 conditions per place. [2022-12-13 14:59:53,716 INFO L137 encePairwiseOnDemand]: 232/246 looper letters, 222 selfloop transitions, 108 changer transitions 44/374 dead transitions. [2022-12-13 14:59:53,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 374 transitions, 5716 flow [2022-12-13 14:59:53,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 14:59:53,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 14:59:53,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1175 transitions. [2022-12-13 14:59:53,719 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47764227642276424 [2022-12-13 14:59:53,719 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1175 transitions. [2022-12-13 14:59:53,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1175 transitions. [2022-12-13 14:59:53,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:59:53,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1175 transitions. [2022-12-13 14:59:53,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 117.5) internal successors, (1175), 10 states have internal predecessors, (1175), 0 states have call successors, (0), 0 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 14:59:53,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 246.0) internal successors, (2706), 11 states have internal predecessors, (2706), 0 states have call successors, (0), 0 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 14:59:53,724 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 246.0) internal successors, (2706), 11 states have internal predecessors, (2706), 0 states have call successors, (0), 0 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 14:59:53,724 INFO L175 Difference]: Start difference. First operand has 88 places, 184 transitions, 2853 flow. Second operand 10 states and 1175 transitions. [2022-12-13 14:59:53,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 374 transitions, 5716 flow [2022-12-13 14:59:54,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 374 transitions, 5642 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-12-13 14:59:54,221 INFO L231 Difference]: Finished difference. Result has 96 places, 237 transitions, 4045 flow [2022-12-13 14:59:54,222 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=2779, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4045, PETRI_PLACES=96, PETRI_TRANSITIONS=237} [2022-12-13 14:59:54,222 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 53 predicate places. [2022-12-13 14:59:54,222 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 237 transitions, 4045 flow [2022-12-13 14:59:54,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 105.25) internal successors, (842), 8 states have internal predecessors, (842), 0 states have call successors, (0), 0 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 14:59:54,222 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:59:54,222 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:59:54,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 14:59:54,223 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:59:54,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:59:54,223 INFO L85 PathProgramCache]: Analyzing trace with hash -239947747, now seen corresponding path program 3 times [2022-12-13 14:59:54,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:59:54,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547652396] [2022-12-13 14:59:54,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:59:54,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:59:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:59:54,627 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 14:59:54,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:59:54,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547652396] [2022-12-13 14:59:54,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547652396] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:59:54,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:59:54,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:59:54,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407474979] [2022-12-13 14:59:54,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:59:54,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:59:54,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:59:54,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:59:54,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:59:54,659 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 246 [2022-12-13 14:59:54,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 237 transitions, 4045 flow. Second operand has 7 states, 7 states have (on average 120.42857142857143) internal successors, (843), 7 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:59:54,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:59:54,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 246 [2022-12-13 14:59:54,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:59:58,528 INFO L130 PetriNetUnfolder]: 18297/26435 cut-off events. [2022-12-13 14:59:58,528 INFO L131 PetriNetUnfolder]: For 348874/354593 co-relation queries the response was YES. [2022-12-13 14:59:58,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187927 conditions, 26435 events. 18297/26435 cut-off events. For 348874/354593 co-relation queries the response was YES. Maximal size of possible extension queue 1190. Compared 169388 event pairs, 1897 based on Foata normal form. 3118/28605 useless extension candidates. Maximal degree in co-relation 187878. Up to 13552 conditions per place. [2022-12-13 14:59:58,744 INFO L137 encePairwiseOnDemand]: 238/246 looper letters, 183 selfloop transitions, 85 changer transitions 10/327 dead transitions. [2022-12-13 14:59:58,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 327 transitions, 5859 flow [2022-12-13 14:59:58,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:59:58,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 14:59:58,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 900 transitions. [2022-12-13 14:59:58,746 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5226480836236934 [2022-12-13 14:59:58,746 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 900 transitions. [2022-12-13 14:59:58,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 900 transitions. [2022-12-13 14:59:58,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:59:58,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 900 transitions. [2022-12-13 14:59:58,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 128.57142857142858) internal successors, (900), 7 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:59:58,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 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 14:59:58,750 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 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 14:59:58,750 INFO L175 Difference]: Start difference. First operand has 96 places, 237 transitions, 4045 flow. Second operand 7 states and 900 transitions. [2022-12-13 14:59:58,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 327 transitions, 5859 flow [2022-12-13 14:59:59,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 327 transitions, 5674 flow, removed 71 selfloop flow, removed 5 redundant places. [2022-12-13 14:59:59,821 INFO L231 Difference]: Finished difference. Result has 97 places, 274 transitions, 4947 flow [2022-12-13 14:59:59,821 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=3890, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4947, PETRI_PLACES=97, PETRI_TRANSITIONS=274} [2022-12-13 14:59:59,821 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 54 predicate places. [2022-12-13 14:59:59,822 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 274 transitions, 4947 flow [2022-12-13 14:59:59,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 120.42857142857143) internal successors, (843), 7 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:59:59,822 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:59:59,822 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:59:59,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 14:59:59,822 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:59:59,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:59:59,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1452166737, now seen corresponding path program 4 times [2022-12-13 14:59:59,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:59:59,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651370423] [2022-12-13 14:59:59,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:59:59,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:59:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:00:00,284 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 15:00:00,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:00:00,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651370423] [2022-12-13 15:00:00,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651370423] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:00:00,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:00:00,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 15:00:00,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393721885] [2022-12-13 15:00:00,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:00:00,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 15:00:00,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:00:00,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 15:00:00,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:00:00,366 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 246 [2022-12-13 15:00:00,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 274 transitions, 4947 flow. Second operand has 8 states, 8 states have (on average 115.125) internal successors, (921), 8 states have internal predecessors, (921), 0 states have call successors, (0), 0 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 15:00:00,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:00:00,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 246 [2022-12-13 15:00:00,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:00:04,361 INFO L130 PetriNetUnfolder]: 18811/27344 cut-off events. [2022-12-13 15:00:04,361 INFO L131 PetriNetUnfolder]: For 387336/393294 co-relation queries the response was YES. [2022-12-13 15:00:04,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200132 conditions, 27344 events. 18811/27344 cut-off events. For 387336/393294 co-relation queries the response was YES. Maximal size of possible extension queue 1215. Compared 177812 event pairs, 2502 based on Foata normal form. 2580/28839 useless extension candidates. Maximal degree in co-relation 200082. Up to 13794 conditions per place. [2022-12-13 15:00:04,561 INFO L137 encePairwiseOnDemand]: 239/246 looper letters, 159 selfloop transitions, 107 changer transitions 23/338 dead transitions. [2022-12-13 15:00:04,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 338 transitions, 6329 flow [2022-12-13 15:00:04,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:00:04,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 15:00:04,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 863 transitions. [2022-12-13 15:00:04,563 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5011614401858304 [2022-12-13 15:00:04,563 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 863 transitions. [2022-12-13 15:00:04,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 863 transitions. [2022-12-13 15:00:04,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:00:04,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 863 transitions. [2022-12-13 15:00:04,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 123.28571428571429) internal successors, (863), 7 states have internal predecessors, (863), 0 states have call successors, (0), 0 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 15:00:04,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 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 15:00:04,566 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 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 15:00:04,566 INFO L175 Difference]: Start difference. First operand has 97 places, 274 transitions, 4947 flow. Second operand 7 states and 863 transitions. [2022-12-13 15:00:04,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 338 transitions, 6329 flow [2022-12-13 15:00:05,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 338 transitions, 6312 flow, removed 8 selfloop flow, removed 2 redundant places. [2022-12-13 15:00:05,117 INFO L231 Difference]: Finished difference. Result has 103 places, 278 transitions, 5384 flow [2022-12-13 15:00:05,117 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=4932, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5384, PETRI_PLACES=103, PETRI_TRANSITIONS=278} [2022-12-13 15:00:05,117 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 60 predicate places. [2022-12-13 15:00:05,117 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 278 transitions, 5384 flow [2022-12-13 15:00:05,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 115.125) internal successors, (921), 8 states have internal predecessors, (921), 0 states have call successors, (0), 0 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 15:00:05,118 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:00:05,118 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:00:05,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 15:00:05,118 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 15:00:05,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:00:05,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1395743539, now seen corresponding path program 1 times [2022-12-13 15:00:05,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:00:05,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070869970] [2022-12-13 15:00:05,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:00:05,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:00:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:00:05,411 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 15:00:05,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:00:05,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070869970] [2022-12-13 15:00:05,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070869970] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:00:05,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:00:05,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:00:05,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99725034] [2022-12-13 15:00:05,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:00:05,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:00:05,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:00:05,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:00:05,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:00:05,469 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2022-12-13 15:00:05,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 278 transitions, 5384 flow. Second operand has 5 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 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 15:00:05,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:00:05,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2022-12-13 15:00:05,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:00:11,454 INFO L130 PetriNetUnfolder]: 30097/42220 cut-off events. [2022-12-13 15:00:11,454 INFO L131 PetriNetUnfolder]: For 564671/567196 co-relation queries the response was YES. [2022-12-13 15:00:11,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302105 conditions, 42220 events. 30097/42220 cut-off events. For 564671/567196 co-relation queries the response was YES. Maximal size of possible extension queue 1606. Compared 264451 event pairs, 4763 based on Foata normal form. 2499/44615 useless extension candidates. Maximal degree in co-relation 302052. Up to 18705 conditions per place. [2022-12-13 15:00:11,826 INFO L137 encePairwiseOnDemand]: 232/246 looper letters, 181 selfloop transitions, 137 changer transitions 131/453 dead transitions. [2022-12-13 15:00:11,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 453 transitions, 9746 flow [2022-12-13 15:00:11,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:00:11,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:00:11,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 610 transitions. [2022-12-13 15:00:11,828 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4959349593495935 [2022-12-13 15:00:11,828 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 610 transitions. [2022-12-13 15:00:11,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 610 transitions. [2022-12-13 15:00:11,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:00:11,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 610 transitions. [2022-12-13 15:00:11,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 0 states have call successors, (0), 0 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 15:00:11,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 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 15:00:11,830 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 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 15:00:11,830 INFO L175 Difference]: Start difference. First operand has 103 places, 278 transitions, 5384 flow. Second operand 5 states and 610 transitions. [2022-12-13 15:00:11,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 453 transitions, 9746 flow [2022-12-13 15:00:13,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 453 transitions, 9529 flow, removed 45 selfloop flow, removed 5 redundant places. [2022-12-13 15:00:13,124 INFO L231 Difference]: Finished difference. Result has 104 places, 280 transitions, 5936 flow [2022-12-13 15:00:13,124 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=5272, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5936, PETRI_PLACES=104, PETRI_TRANSITIONS=280} [2022-12-13 15:00:13,125 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 61 predicate places. [2022-12-13 15:00:13,125 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 280 transitions, 5936 flow [2022-12-13 15:00:13,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 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 15:00:13,125 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:00:13,125 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:00:13,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 15:00:13,125 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 15:00:13,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:00:13,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1944396203, now seen corresponding path program 2 times [2022-12-13 15:00:13,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:00:13,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251532923] [2022-12-13 15:00:13,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:00:13,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:00:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:00:13,206 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 15:00:13,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:00:13,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251532923] [2022-12-13 15:00:13,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251532923] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:00:13,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:00:13,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:00:13,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625533294] [2022-12-13 15:00:13,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:00:13,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:00:13,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:00:13,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:00:13,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:00:13,214 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 246 [2022-12-13 15:00:13,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 280 transitions, 5936 flow. Second operand has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 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 15:00:13,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:00:13,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 246 [2022-12-13 15:00:13,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:00:16,950 INFO L130 PetriNetUnfolder]: 15733/24097 cut-off events. [2022-12-13 15:00:16,950 INFO L131 PetriNetUnfolder]: For 588063/599047 co-relation queries the response was YES. [2022-12-13 15:00:17,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178930 conditions, 24097 events. 15733/24097 cut-off events. For 588063/599047 co-relation queries the response was YES. Maximal size of possible extension queue 1504. Compared 177675 event pairs, 1833 based on Foata normal form. 6762/29969 useless extension candidates. Maximal degree in co-relation 178875. Up to 11795 conditions per place. [2022-12-13 15:00:17,099 INFO L137 encePairwiseOnDemand]: 239/246 looper letters, 458 selfloop transitions, 6 changer transitions 12/525 dead transitions. [2022-12-13 15:00:17,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 525 transitions, 12084 flow [2022-12-13 15:00:17,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:00:17,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 15:00:17,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 510 transitions. [2022-12-13 15:00:17,101 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5182926829268293 [2022-12-13 15:00:17,101 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 510 transitions. [2022-12-13 15:00:17,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 510 transitions. [2022-12-13 15:00:17,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:00:17,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 510 transitions. [2022-12-13 15:00:17,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.5) internal successors, (510), 4 states have internal predecessors, (510), 0 states have call successors, (0), 0 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 15:00:17,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 0 states have call successors, (0), 0 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 15:00:17,103 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 0 states have call successors, (0), 0 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 15:00:17,103 INFO L175 Difference]: Start difference. First operand has 104 places, 280 transitions, 5936 flow. Second operand 4 states and 510 transitions. [2022-12-13 15:00:17,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 525 transitions, 12084 flow [2022-12-13 15:00:17,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 525 transitions, 12030 flow, removed 20 selfloop flow, removed 2 redundant places. [2022-12-13 15:00:17,585 INFO L231 Difference]: Finished difference. Result has 106 places, 267 transitions, 5591 flow [2022-12-13 15:00:17,585 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=5478, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=5591, PETRI_PLACES=106, PETRI_TRANSITIONS=267} [2022-12-13 15:00:17,585 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 63 predicate places. [2022-12-13 15:00:17,585 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 267 transitions, 5591 flow [2022-12-13 15:00:17,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 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 15:00:17,586 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:00:17,586 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:00:17,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 15:00:17,586 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 15:00:17,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:00:17,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1621937068, now seen corresponding path program 1 times [2022-12-13 15:00:17,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:00:17,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731354313] [2022-12-13 15:00:17,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:00:17,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:00:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:00:17,670 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 15:00:17,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:00:17,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731354313] [2022-12-13 15:00:17,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731354313] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:00:17,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:00:17,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:00:17,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293685402] [2022-12-13 15:00:17,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:00:17,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:00:17,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:00:17,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:00:17,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:00:17,677 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 246 [2022-12-13 15:00:17,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 267 transitions, 5591 flow. Second operand has 5 states, 5 states have (on average 117.4) internal successors, (587), 5 states have internal predecessors, (587), 0 states have call successors, (0), 0 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 15:00:17,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:00:17,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 246 [2022-12-13 15:00:17,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:00:20,649 INFO L130 PetriNetUnfolder]: 11664/18288 cut-off events. [2022-12-13 15:00:20,650 INFO L131 PetriNetUnfolder]: For 489888/503125 co-relation queries the response was YES. [2022-12-13 15:00:20,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141006 conditions, 18288 events. 11664/18288 cut-off events. For 489888/503125 co-relation queries the response was YES. Maximal size of possible extension queue 1186. Compared 134815 event pairs, 1124 based on Foata normal form. 6212/23683 useless extension candidates. Maximal degree in co-relation 140949. Up to 8689 conditions per place. [2022-12-13 15:00:20,753 INFO L137 encePairwiseOnDemand]: 239/246 looper letters, 405 selfloop transitions, 10 changer transitions 57/519 dead transitions. [2022-12-13 15:00:20,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 519 transitions, 11754 flow [2022-12-13 15:00:20,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:00:20,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:00:20,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 640 transitions. [2022-12-13 15:00:20,755 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5203252032520326 [2022-12-13 15:00:20,755 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 640 transitions. [2022-12-13 15:00:20,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 640 transitions. [2022-12-13 15:00:20,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:00:20,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 640 transitions. [2022-12-13 15:00:20,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 0 states have call successors, (0), 0 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 15:00:20,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 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 15:00:20,757 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 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 15:00:20,757 INFO L175 Difference]: Start difference. First operand has 106 places, 267 transitions, 5591 flow. Second operand 5 states and 640 transitions. [2022-12-13 15:00:20,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 519 transitions, 11754 flow [2022-12-13 15:00:21,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 519 transitions, 11646 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-13 15:00:21,125 INFO L231 Difference]: Finished difference. Result has 110 places, 229 transitions, 4580 flow [2022-12-13 15:00:21,125 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=4686, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4580, PETRI_PLACES=110, PETRI_TRANSITIONS=229} [2022-12-13 15:00:21,125 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 67 predicate places. [2022-12-13 15:00:21,125 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 229 transitions, 4580 flow [2022-12-13 15:00:21,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.4) internal successors, (587), 5 states have internal predecessors, (587), 0 states have call successors, (0), 0 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 15:00:21,126 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:00:21,126 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:00:21,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 15:00:21,126 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 15:00:21,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:00:21,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1064715411, now seen corresponding path program 1 times [2022-12-13 15:00:21,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:00:21,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776108855] [2022-12-13 15:00:21,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:00:21,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:00:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:00:21,212 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 15:00:21,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:00:21,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776108855] [2022-12-13 15:00:21,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776108855] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:00:21,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:00:21,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:00:21,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104994011] [2022-12-13 15:00:21,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:00:21,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:00:21,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:00:21,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:00:21,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:00:21,219 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 246 [2022-12-13 15:00:21,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 229 transitions, 4580 flow. Second operand has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 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 15:00:21,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:00:21,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 246 [2022-12-13 15:00:21,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:00:25,335 INFO L130 PetriNetUnfolder]: 16046/26218 cut-off events. [2022-12-13 15:00:25,335 INFO L131 PetriNetUnfolder]: For 535206/543186 co-relation queries the response was YES. [2022-12-13 15:00:25,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212955 conditions, 26218 events. 16046/26218 cut-off events. For 535206/543186 co-relation queries the response was YES. Maximal size of possible extension queue 1582. Compared 210196 event pairs, 3875 based on Foata normal form. 3833/28910 useless extension candidates. Maximal degree in co-relation 212895. Up to 11982 conditions per place. [2022-12-13 15:00:25,475 INFO L137 encePairwiseOnDemand]: 242/246 looper letters, 147 selfloop transitions, 18 changer transitions 170/354 dead transitions. [2022-12-13 15:00:25,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 354 transitions, 7505 flow [2022-12-13 15:00:25,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:00:25,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:00:25,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 646 transitions. [2022-12-13 15:00:25,477 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5252032520325203 [2022-12-13 15:00:25,477 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 646 transitions. [2022-12-13 15:00:25,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 646 transitions. [2022-12-13 15:00:25,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:00:25,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 646 transitions. [2022-12-13 15:00:25,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.2) internal successors, (646), 5 states have internal predecessors, (646), 0 states have call successors, (0), 0 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 15:00:25,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 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 15:00:25,479 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 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 15:00:25,479 INFO L175 Difference]: Start difference. First operand has 110 places, 229 transitions, 4580 flow. Second operand 5 states and 646 transitions. [2022-12-13 15:00:25,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 354 transitions, 7505 flow [2022-12-13 15:00:26,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 354 transitions, 7417 flow, removed 38 selfloop flow, removed 2 redundant places. [2022-12-13 15:00:26,290 INFO L231 Difference]: Finished difference. Result has 115 places, 154 transitions, 2806 flow [2022-12-13 15:00:26,290 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=4531, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2806, PETRI_PLACES=115, PETRI_TRANSITIONS=154} [2022-12-13 15:00:26,291 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 72 predicate places. [2022-12-13 15:00:26,291 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 154 transitions, 2806 flow [2022-12-13 15:00:26,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 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 15:00:26,291 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:00:26,291 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:00:26,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 15:00:26,291 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 15:00:26,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:00:26,291 INFO L85 PathProgramCache]: Analyzing trace with hash -807227643, now seen corresponding path program 1 times [2022-12-13 15:00:26,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:00:26,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957685424] [2022-12-13 15:00:26,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:00:26,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:00:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:00:26,457 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 15:00:26,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:00:26,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957685424] [2022-12-13 15:00:26,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957685424] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:00:26,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:00:26,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:00:26,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402303884] [2022-12-13 15:00:26,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:00:26,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:00:26,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:00:26,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:00:26,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:00:26,468 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 246 [2022-12-13 15:00:26,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 154 transitions, 2806 flow. Second operand has 6 states, 6 states have (on average 117.16666666666667) internal successors, (703), 6 states have internal predecessors, (703), 0 states have call successors, (0), 0 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 15:00:26,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:00:26,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 246 [2022-12-13 15:00:26,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:00:29,532 INFO L130 PetriNetUnfolder]: 11172/18098 cut-off events. [2022-12-13 15:00:29,532 INFO L131 PetriNetUnfolder]: For 407790/419616 co-relation queries the response was YES. [2022-12-13 15:00:29,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139109 conditions, 18098 events. 11172/18098 cut-off events. For 407790/419616 co-relation queries the response was YES. Maximal size of possible extension queue 1388. Compared 141923 event pairs, 1146 based on Foata normal form. 4489/21656 useless extension candidates. Maximal degree in co-relation 139047. Up to 8343 conditions per place. [2022-12-13 15:00:29,612 INFO L137 encePairwiseOnDemand]: 239/246 looper letters, 224 selfloop transitions, 14 changer transitions 53/318 dead transitions. [2022-12-13 15:00:29,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 318 transitions, 6421 flow [2022-12-13 15:00:29,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:00:29,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:00:29,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 768 transitions. [2022-12-13 15:00:29,613 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5203252032520326 [2022-12-13 15:00:29,613 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 768 transitions. [2022-12-13 15:00:29,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 768 transitions. [2022-12-13 15:00:29,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:00:29,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 768 transitions. [2022-12-13 15:00:29,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 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 15:00:29,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 0 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 15:00:29,616 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 0 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 15:00:29,616 INFO L175 Difference]: Start difference. First operand has 115 places, 154 transitions, 2806 flow. Second operand 6 states and 768 transitions. [2022-12-13 15:00:29,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 318 transitions, 6421 flow [2022-12-13 15:00:30,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 318 transitions, 6269 flow, removed 30 selfloop flow, removed 6 redundant places. [2022-12-13 15:00:30,754 INFO L231 Difference]: Finished difference. Result has 114 places, 136 transitions, 2261 flow [2022-12-13 15:00:30,754 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=2400, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2261, PETRI_PLACES=114, PETRI_TRANSITIONS=136} [2022-12-13 15:00:30,754 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 71 predicate places. [2022-12-13 15:00:30,754 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 136 transitions, 2261 flow [2022-12-13 15:00:30,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.16666666666667) internal successors, (703), 6 states have internal predecessors, (703), 0 states have call successors, (0), 0 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 15:00:30,754 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:00:30,754 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:00:30,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 15:00:30,755 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 15:00:30,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:00:30,755 INFO L85 PathProgramCache]: Analyzing trace with hash -345197784, now seen corresponding path program 1 times [2022-12-13 15:00:30,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:00:30,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889846947] [2022-12-13 15:00:30,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:00:30,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:00:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:00:30,883 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 15:00:30,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:00:30,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889846947] [2022-12-13 15:00:30,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889846947] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:00:30,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:00:30,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 15:00:30,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880536302] [2022-12-13 15:00:30,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:00:30,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:00:30,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:00:30,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:00:30,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:00:30,895 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 246 [2022-12-13 15:00:30,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 136 transitions, 2261 flow. Second operand has 7 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 0 states have call successors, (0), 0 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 15:00:30,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:00:30,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 246 [2022-12-13 15:00:30,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:00:33,329 INFO L130 PetriNetUnfolder]: 10021/16432 cut-off events. [2022-12-13 15:00:33,329 INFO L131 PetriNetUnfolder]: For 325216/333795 co-relation queries the response was YES. [2022-12-13 15:00:33,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127969 conditions, 16432 events. 10021/16432 cut-off events. For 325216/333795 co-relation queries the response was YES. Maximal size of possible extension queue 1264. Compared 129781 event pairs, 1122 based on Foata normal form. 2965/18567 useless extension candidates. Maximal degree in co-relation 127909. Up to 7406 conditions per place. [2022-12-13 15:00:33,409 INFO L137 encePairwiseOnDemand]: 239/246 looper letters, 161 selfloop transitions, 18 changer transitions 71/266 dead transitions. [2022-12-13 15:00:33,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 266 transitions, 5067 flow [2022-12-13 15:00:33,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:00:33,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 15:00:33,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 872 transitions. [2022-12-13 15:00:33,411 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5063879210220673 [2022-12-13 15:00:33,411 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 872 transitions. [2022-12-13 15:00:33,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 872 transitions. [2022-12-13 15:00:33,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:00:33,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 872 transitions. [2022-12-13 15:00:33,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 124.57142857142857) internal successors, (872), 7 states have internal predecessors, (872), 0 states have call successors, (0), 0 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 15:00:33,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 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 15:00:33,413 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 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 15:00:33,414 INFO L175 Difference]: Start difference. First operand has 114 places, 136 transitions, 2261 flow. Second operand 7 states and 872 transitions. [2022-12-13 15:00:33,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 266 transitions, 5067 flow [2022-12-13 15:00:35,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 266 transitions, 4716 flow, removed 77 selfloop flow, removed 11 redundant places. [2022-12-13 15:00:35,466 INFO L231 Difference]: Finished difference. Result has 111 places, 103 transitions, 1532 flow [2022-12-13 15:00:35,466 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=2028, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1532, PETRI_PLACES=111, PETRI_TRANSITIONS=103} [2022-12-13 15:00:35,467 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 68 predicate places. [2022-12-13 15:00:35,467 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 103 transitions, 1532 flow [2022-12-13 15:00:35,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 0 states have call successors, (0), 0 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 15:00:35,467 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:00:35,467 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:00:35,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 15:00:35,467 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 15:00:35,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:00:35,467 INFO L85 PathProgramCache]: Analyzing trace with hash -700964795, now seen corresponding path program 1 times [2022-12-13 15:00:35,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:00:35,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994790302] [2022-12-13 15:00:35,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:00:35,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:00:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:00:35,590 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 15:00:35,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:00:35,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994790302] [2022-12-13 15:00:35,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994790302] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:00:35,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:00:35,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:00:35,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430081897] [2022-12-13 15:00:35,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:00:35,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:00:35,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:00:35,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:00:35,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:00:35,600 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 246 [2022-12-13 15:00:35,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 103 transitions, 1532 flow. Second operand has 5 states, 5 states have (on average 120.8) internal successors, (604), 5 states have internal predecessors, (604), 0 states have call successors, (0), 0 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 15:00:35,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:00:35,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 246 [2022-12-13 15:00:35,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:00:36,315 INFO L130 PetriNetUnfolder]: 3043/4983 cut-off events. [2022-12-13 15:00:36,315 INFO L131 PetriNetUnfolder]: For 61329/61768 co-relation queries the response was YES. [2022-12-13 15:00:36,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37276 conditions, 4983 events. 3043/4983 cut-off events. For 61329/61768 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 29995 event pairs, 481 based on Foata normal form. 213/5134 useless extension candidates. Maximal degree in co-relation 37220. Up to 2969 conditions per place. [2022-12-13 15:00:36,335 INFO L137 encePairwiseOnDemand]: 242/246 looper letters, 54 selfloop transitions, 1 changer transitions 109/169 dead transitions. [2022-12-13 15:00:36,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 169 transitions, 2691 flow [2022-12-13 15:00:36,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:00:36,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:00:36,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 630 transitions. [2022-12-13 15:00:36,336 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2022-12-13 15:00:36,336 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 630 transitions. [2022-12-13 15:00:36,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 630 transitions. [2022-12-13 15:00:36,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:00:36,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 630 transitions. [2022-12-13 15:00:36,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.0) internal successors, (630), 5 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:00:36,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 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 15:00:36,338 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 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 15:00:36,338 INFO L175 Difference]: Start difference. First operand has 111 places, 103 transitions, 1532 flow. Second operand 5 states and 630 transitions. [2022-12-13 15:00:36,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 169 transitions, 2691 flow [2022-12-13 15:00:36,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 169 transitions, 2193 flow, removed 188 selfloop flow, removed 16 redundant places. [2022-12-13 15:00:36,570 INFO L231 Difference]: Finished difference. Result has 102 places, 56 transitions, 569 flow [2022-12-13 15:00:36,571 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=1236, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=569, PETRI_PLACES=102, PETRI_TRANSITIONS=56} [2022-12-13 15:00:36,571 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 59 predicate places. [2022-12-13 15:00:36,571 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 56 transitions, 569 flow [2022-12-13 15:00:36,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 120.8) internal successors, (604), 5 states have internal predecessors, (604), 0 states have call successors, (0), 0 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 15:00:36,571 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:00:36,571 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:00:36,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 15:00:36,571 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 15:00:36,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:00:36,572 INFO L85 PathProgramCache]: Analyzing trace with hash 123689723, now seen corresponding path program 2 times [2022-12-13 15:00:36,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:00:36,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707886297] [2022-12-13 15:00:36,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:00:36,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:00:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:00:37,226 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 15:00:37,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:00:37,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707886297] [2022-12-13 15:00:37,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707886297] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:00:37,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:00:37,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:00:37,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101783225] [2022-12-13 15:00:37,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:00:37,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:00:37,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:00:37,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:00:37,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:00:37,327 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 246 [2022-12-13 15:00:37,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 56 transitions, 569 flow. Second operand has 9 states, 9 states have (on average 107.11111111111111) internal successors, (964), 9 states have internal predecessors, (964), 0 states have call successors, (0), 0 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 15:00:37,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:00:37,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 246 [2022-12-13 15:00:37,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:00:37,687 INFO L130 PetriNetUnfolder]: 382/683 cut-off events. [2022-12-13 15:00:37,687 INFO L131 PetriNetUnfolder]: For 4003/4003 co-relation queries the response was YES. [2022-12-13 15:00:37,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3901 conditions, 683 events. 382/683 cut-off events. For 4003/4003 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2706 event pairs, 59 based on Foata normal form. 1/684 useless extension candidates. Maximal degree in co-relation 3865. Up to 348 conditions per place. [2022-12-13 15:00:37,690 INFO L137 encePairwiseOnDemand]: 238/246 looper letters, 54 selfloop transitions, 11 changer transitions 26/91 dead transitions. [2022-12-13 15:00:37,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 91 transitions, 1037 flow [2022-12-13 15:00:37,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:00:37,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:00:37,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 673 transitions. [2022-12-13 15:00:37,691 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4559620596205962 [2022-12-13 15:00:37,691 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 673 transitions. [2022-12-13 15:00:37,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 673 transitions. [2022-12-13 15:00:37,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:00:37,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 673 transitions. [2022-12-13 15:00:37,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 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 15:00:37,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 0 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 15:00:37,693 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 0 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 15:00:37,694 INFO L175 Difference]: Start difference. First operand has 102 places, 56 transitions, 569 flow. Second operand 6 states and 673 transitions. [2022-12-13 15:00:37,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 91 transitions, 1037 flow [2022-12-13 15:00:37,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 91 transitions, 670 flow, removed 64 selfloop flow, removed 32 redundant places. [2022-12-13 15:00:37,702 INFO L231 Difference]: Finished difference. Result has 70 places, 51 transitions, 324 flow [2022-12-13 15:00:37,702 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=324, PETRI_PLACES=70, PETRI_TRANSITIONS=51} [2022-12-13 15:00:37,702 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 27 predicate places. [2022-12-13 15:00:37,703 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 51 transitions, 324 flow [2022-12-13 15:00:37,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 107.11111111111111) internal successors, (964), 9 states have internal predecessors, (964), 0 states have call successors, (0), 0 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 15:00:37,703 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:00:37,703 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:00:37,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 15:00:37,703 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 15:00:37,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:00:37,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1025706301, now seen corresponding path program 3 times [2022-12-13 15:00:37,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:00:37,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756628351] [2022-12-13 15:00:37,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:00:37,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:00:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:00:37,724 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:00:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:00:37,763 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:00:37,763 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:00:37,763 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-12-13 15:00:37,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-12-13 15:00:37,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-12-13 15:00:37,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-12-13 15:00:37,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-12-13 15:00:37,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2022-12-13 15:00:37,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-12-13 15:00:37,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 15:00:37,766 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:00:37,771 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 15:00:37,771 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 15:00:37,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 03:00:37 BasicIcfg [2022-12-13 15:00:37,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 15:00:37,824 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 15:00:37,824 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 15:00:37,824 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 15:00:37,825 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:59:17" (3/4) ... [2022-12-13 15:00:37,826 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 15:00:37,876 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8d65b2-02db-489a-a55d-6cea90f4c2bf/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 15:00:37,876 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 15:00:37,877 INFO L158 Benchmark]: Toolchain (without parser) took 81861.08ms. Allocated memory was 121.6MB in the beginning and 4.7GB in the end (delta: 4.5GB). Free memory was 85.4MB in the beginning and 728.5MB in the end (delta: -643.1MB). Peak memory consumption was 3.9GB. Max. memory is 16.1GB. [2022-12-13 15:00:37,877 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 121.6MB. Free memory was 88.1MB in the beginning and 88.1MB in the end (delta: 28.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:00:37,877 INFO L158 Benchmark]: CACSL2BoogieTranslator took 352.17ms. Allocated memory is still 121.6MB. Free memory was 85.4MB in the beginning and 57.6MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-13 15:00:37,878 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.70ms. Allocated memory is still 121.6MB. Free memory was 57.6MB in the beginning and 55.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:00:37,878 INFO L158 Benchmark]: Boogie Preprocessor took 35.29ms. Allocated memory is still 121.6MB. Free memory was 55.0MB in the beginning and 52.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:00:37,878 INFO L158 Benchmark]: RCFGBuilder took 572.43ms. Allocated memory was 121.6MB in the beginning and 153.1MB in the end (delta: 31.5MB). Free memory was 52.9MB in the beginning and 97.3MB in the end (delta: -44.3MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. [2022-12-13 15:00:37,878 INFO L158 Benchmark]: TraceAbstraction took 80803.02ms. Allocated memory was 153.1MB in the beginning and 4.7GB in the end (delta: 4.5GB). Free memory was 96.3MB in the beginning and 743.2MB in the end (delta: -646.9MB). Peak memory consumption was 3.9GB. Max. memory is 16.1GB. [2022-12-13 15:00:37,878 INFO L158 Benchmark]: Witness Printer took 52.42ms. Allocated memory is still 4.7GB. Free memory was 743.2MB in the beginning and 728.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 15:00:37,880 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 121.6MB. Free memory was 88.1MB in the beginning and 88.1MB in the end (delta: 28.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 352.17ms. Allocated memory is still 121.6MB. Free memory was 85.4MB in the beginning and 57.6MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.70ms. Allocated memory is still 121.6MB. Free memory was 57.6MB in the beginning and 55.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.29ms. Allocated memory is still 121.6MB. Free memory was 55.0MB in the beginning and 52.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 572.43ms. Allocated memory was 121.6MB in the beginning and 153.1MB in the end (delta: 31.5MB). Free memory was 52.9MB in the beginning and 97.3MB in the end (delta: -44.3MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. * TraceAbstraction took 80803.02ms. Allocated memory was 153.1MB in the beginning and 4.7GB in the end (delta: 4.5GB). Free memory was 96.3MB in the beginning and 743.2MB in the end (delta: -646.9MB). Peak memory consumption was 3.9GB. Max. memory is 16.1GB. * Witness Printer took 52.42ms. Allocated memory is still 4.7GB. Free memory was 743.2MB in the beginning and 728.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 142 PlacesBefore, 43 PlacesAfterwards, 131 TransitionsBefore, 31 TransitionsAfterwards, 3218 CoEnabledTransitionPairs, 7 FixpointIterations, 44 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 111 TotalNumberOfCompositions, 8722 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3516, independent: 3287, independent conditional: 0, independent unconditional: 3287, dependent: 229, dependent conditional: 0, dependent unconditional: 229, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1658, independent: 1626, independent conditional: 0, independent unconditional: 1626, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3516, independent: 1661, independent conditional: 0, independent unconditional: 1661, dependent: 197, dependent conditional: 0, dependent unconditional: 197, unknown: 1658, unknown conditional: 0, unknown unconditional: 1658] , Statistics on independence cache: Total cache size (in pairs): 160, Positive cache size: 145, Positive conditional cache size: 0, Positive unconditional cache size: 145, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p3_EAX = 0; [L714] 0 int __unbuffered_p3_EBX = 0; [L716] 0 int a = 0; [L717] 0 _Bool main$tmp_guard0; [L718] 0 _Bool main$tmp_guard1; [L720] 0 int x = 0; [L722] 0 int y = 0; [L723] 0 _Bool y$flush_delayed; [L724] 0 int y$mem_tmp; [L725] 0 _Bool y$r_buff0_thd0; [L726] 0 _Bool y$r_buff0_thd1; [L727] 0 _Bool y$r_buff0_thd2; [L728] 0 _Bool y$r_buff0_thd3; [L729] 0 _Bool y$r_buff0_thd4; [L730] 0 _Bool y$r_buff1_thd0; [L731] 0 _Bool y$r_buff1_thd1; [L732] 0 _Bool y$r_buff1_thd2; [L733] 0 _Bool y$r_buff1_thd3; [L734] 0 _Bool y$r_buff1_thd4; [L735] 0 _Bool y$read_delayed; [L736] 0 int *y$read_delayed_var; [L737] 0 int y$w_buff0; [L738] 0 _Bool y$w_buff0_used; [L739] 0 int y$w_buff1; [L740] 0 _Bool y$w_buff1_used; [L742] 0 int z = 0; [L743] 0 _Bool weak$$choice0; [L744] 0 _Bool weak$$choice2; [L844] 0 pthread_t t805; [L845] FCALL, FORK 0 pthread_create(&t805, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t805, ((void *)0), P0, ((void *)0))=-2, t805={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L846] 0 pthread_t t806; [L847] FCALL, FORK 0 pthread_create(&t806, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t806, ((void *)0), P1, ((void *)0))=-1, t805={5:0}, t806={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L848] 0 pthread_t t807; [L849] FCALL, FORK 0 pthread_create(&t807, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t807, ((void *)0), P2, ((void *)0))=0, t805={5:0}, t806={6:0}, t807={7:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L850] 0 pthread_t t808; [L783] 3 y$w_buff1 = y$w_buff0 [L784] 3 y$w_buff0 = 2 [L785] 3 y$w_buff1_used = y$w_buff0_used [L786] 3 y$w_buff0_used = (_Bool)1 [L787] CALL 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 3 !(!expression) [L787] RET 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L788] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L789] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L790] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L791] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L792] 3 y$r_buff1_thd4 = y$r_buff0_thd4 [L793] 3 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=0] [L851] FCALL, FORK 0 pthread_create(&t808, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t808, ((void *)0), P3, ((void *)0))=1, t805={5:0}, t806={6:0}, t807={7:0}, t808={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=0] [L796] 3 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L813] 4 z = 2 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L816] 4 __unbuffered_p3_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L819] 4 __unbuffered_p3_EBX = a VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L748] 1 a = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L751] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L763] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L822] 4 y = y$w_buff0_used && y$r_buff0_thd4 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd4 ? y$w_buff1 : y) [L823] 4 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd4 ? (_Bool)0 : y$w_buff0_used [L824] 4 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd4 || y$w_buff1_used && y$r_buff1_thd4 ? (_Bool)0 : y$w_buff1_used [L825] 4 y$r_buff0_thd4 = y$w_buff0_used && y$r_buff0_thd4 ? (_Bool)0 : y$r_buff0_thd4 [L826] 4 y$r_buff1_thd4 = y$w_buff0_used && y$r_buff0_thd4 || y$w_buff1_used && y$r_buff1_thd4 ? (_Bool)0 : y$r_buff1_thd4 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L766] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L769] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L770] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L771] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L772] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L773] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L799] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L800] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L801] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L802] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L803] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L806] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L808] 3 return 0; [L756] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L758] 1 return 0; [L829] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L831] 4 return 0; [L776] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L778] 2 return 0; [L853] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L855] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L855] RET 0 assume_abort_if_not(main$tmp_guard0) [L857] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L858] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L859] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L860] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L861] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t805={5:0}, t806={6:0}, t807={7:0}, t808={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L864] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L865] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L866] 0 y$flush_delayed = weak$$choice2 [L867] 0 y$mem_tmp = y [L868] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L869] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L870] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L871] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L872] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L873] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L874] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L875] 0 main$tmp_guard1 = !(x == 2 && y == 2 && z == 2 && __unbuffered_p3_EAX == 2 && __unbuffered_p3_EBX == 0) [L876] 0 y = y$flush_delayed ? y$mem_tmp : y [L877] 0 y$flush_delayed = (_Bool)0 [L879] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=1, \old(expression)=0, \result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=1, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 847]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 851]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 845]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 171 locations, 7 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: 80.6s, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 69.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1972 SdHoareTripleChecker+Valid, 4.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1690 mSDsluCounter, 1148 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 981 mSDsCounter, 468 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3695 IncrementalHoareTripleChecker+Invalid, 4163 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 468 mSolverCounterUnsat, 167 mSDtfsCounter, 3695 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 142 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5936occurred in iteration=14, InterpolantAutomatonStates: 135, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 410 NumberOfCodeBlocks, 410 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 361 ConstructedInterpolants, 0 QuantifiedInterpolants, 4710 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 21 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 RESULT: Ultimate proved your program to be incorrect! [2022-12-13 15:00:37,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8d65b2-02db-489a-a55d-6cea90f4c2bf/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE