./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_a47a74db-7bf7-473c-8748-bac3424cf9b8/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47a74db-7bf7-473c-8748-bac3424cf9b8/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47a74db-7bf7-473c-8748-bac3424cf9b8/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47a74db-7bf7-473c-8748-bac3424cf9b8/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47a74db-7bf7-473c-8748-bac3424cf9b8/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47a74db-7bf7-473c-8748-bac3424cf9b8/bin/uautomizer-Dbtcem3rbc --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 33c040d0fbd9b1f189d3917c569371e7923ba6ef4820715ff1ef4976213f5b31 --- 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-5e519f3 [2022-11-02 21:03:06,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:03:06,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:03:06,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:03:06,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:03:06,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:03:06,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:03:06,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:03:06,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:03:06,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:03:06,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:03:06,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:03:06,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:03:06,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:03:06,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:03:06,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:03:06,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:03:06,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:03:06,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:03:06,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:03:06,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:03:06,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:03:06,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:03:06,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:03:06,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:03:06,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:03:06,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:03:06,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:03:06,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:03:06,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:03:06,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:03:06,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:03:06,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:03:06,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:03:06,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:03:06,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:03:06,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:03:06,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:03:06,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:03:06,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:03:06,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:03:06,798 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47a74db-7bf7-473c-8748-bac3424cf9b8/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:03:06,820 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:03:06,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:03:06,820 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:03:06,821 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:03:06,821 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:03:06,822 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:03:06,822 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:03:06,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:03:06,823 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:03:06,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:03:06,823 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:03:06,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:03:06,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:03:06,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:03:06,824 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:03:06,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:03:06,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:03:06,825 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:03:06,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:03:06,825 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:03:06,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:03:06,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:03:06,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:03:06,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:03:06,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:03:06,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:03:06,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:03:06,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:03:06,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:03:06,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:03:06,828 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:03:06,828 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:03:06,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:03:06,829 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_a47a74db-7bf7-473c-8748-bac3424cf9b8/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47a74db-7bf7-473c-8748-bac3424cf9b8/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33c040d0fbd9b1f189d3917c569371e7923ba6ef4820715ff1ef4976213f5b31 [2022-11-02 21:03:07,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:03:07,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:03:07,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:03:07,110 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:03:07,111 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:03:07,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47a74db-7bf7-473c-8748-bac3424cf9b8/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i [2022-11-02 21:03:07,197 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47a74db-7bf7-473c-8748-bac3424cf9b8/bin/uautomizer-Dbtcem3rbc/data/8dfe09905/dc9379eb8ca544e28caee394d4cf0068/FLAGadf275001 [2022-11-02 21:03:07,881 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:03:07,882 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47a74db-7bf7-473c-8748-bac3424cf9b8/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i [2022-11-02 21:03:07,901 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47a74db-7bf7-473c-8748-bac3424cf9b8/bin/uautomizer-Dbtcem3rbc/data/8dfe09905/dc9379eb8ca544e28caee394d4cf0068/FLAGadf275001 [2022-11-02 21:03:08,156 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47a74db-7bf7-473c-8748-bac3424cf9b8/bin/uautomizer-Dbtcem3rbc/data/8dfe09905/dc9379eb8ca544e28caee394d4cf0068 [2022-11-02 21:03:08,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:03:08,161 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:03:08,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:03:08,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:03:08,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:03:08,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:03:08" (1/1) ... [2022-11-02 21:03:08,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9a58982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:08, skipping insertion in model container [2022-11-02 21:03:08,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:03:08" (1/1) ... [2022-11-02 21:03:08,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:03:08,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:03:08,603 WARN L230 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_a47a74db-7bf7-473c-8748-bac3424cf9b8/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[30327,30340] [2022-11-02 21:03:08,608 WARN L230 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_a47a74db-7bf7-473c-8748-bac3424cf9b8/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[30457,30470] [2022-11-02 21:03:08,612 WARN L230 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_a47a74db-7bf7-473c-8748-bac3424cf9b8/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[30859,30872] [2022-11-02 21:03:08,617 WARN L230 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_a47a74db-7bf7-473c-8748-bac3424cf9b8/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[31417,31430] [2022-11-02 21:03:08,619 WARN L230 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_a47a74db-7bf7-473c-8748-bac3424cf9b8/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[31600,31613] [2022-11-02 21:03:08,621 WARN L230 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_a47a74db-7bf7-473c-8748-bac3424cf9b8/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[31761,31774] [2022-11-02 21:03:08,624 WARN L230 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_a47a74db-7bf7-473c-8748-bac3424cf9b8/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[32305,32318] [2022-11-02 21:03:08,626 WARN L230 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_a47a74db-7bf7-473c-8748-bac3424cf9b8/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[32447,32460] [2022-11-02 21:03:08,630 WARN L230 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_a47a74db-7bf7-473c-8748-bac3424cf9b8/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[33033,33046] [2022-11-02 21:03:08,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:08,643 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:03:08,677 WARN L230 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_a47a74db-7bf7-473c-8748-bac3424cf9b8/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[30327,30340] [2022-11-02 21:03:08,678 WARN L230 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_a47a74db-7bf7-473c-8748-bac3424cf9b8/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[30457,30470] [2022-11-02 21:03:08,680 WARN L230 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_a47a74db-7bf7-473c-8748-bac3424cf9b8/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[30859,30872] [2022-11-02 21:03:08,683 WARN L230 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_a47a74db-7bf7-473c-8748-bac3424cf9b8/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[31417,31430] [2022-11-02 21:03:08,684 WARN L230 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_a47a74db-7bf7-473c-8748-bac3424cf9b8/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[31600,31613] [2022-11-02 21:03:08,685 WARN L230 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_a47a74db-7bf7-473c-8748-bac3424cf9b8/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[31761,31774] [2022-11-02 21:03:08,688 WARN L230 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_a47a74db-7bf7-473c-8748-bac3424cf9b8/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[32305,32318] [2022-11-02 21:03:08,689 WARN L230 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_a47a74db-7bf7-473c-8748-bac3424cf9b8/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[32447,32460] [2022-11-02 21:03:08,691 WARN L230 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_a47a74db-7bf7-473c-8748-bac3424cf9b8/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[33033,33046] [2022-11-02 21:03:08,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:08,725 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:03:08,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:08 WrapperNode [2022-11-02 21:03:08,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:03:08,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:03:08,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:03:08,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:03:08,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:08" (1/1) ... [2022-11-02 21:03:08,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:08" (1/1) ... [2022-11-02 21:03:08,782 INFO L138 Inliner]: procedures = 178, calls = 34, calls flagged for inlining = 26, calls inlined = 37, statements flattened = 296 [2022-11-02 21:03:08,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:03:08,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:03:08,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:03:08,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:03:08,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:08" (1/1) ... [2022-11-02 21:03:08,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:08" (1/1) ... [2022-11-02 21:03:08,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:08" (1/1) ... [2022-11-02 21:03:08,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:08" (1/1) ... [2022-11-02 21:03:08,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:08" (1/1) ... [2022-11-02 21:03:08,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:08" (1/1) ... [2022-11-02 21:03:08,810 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:08" (1/1) ... [2022-11-02 21:03:08,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:08" (1/1) ... [2022-11-02 21:03:08,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:03:08,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:03:08,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:03:08,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:03:08,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:08" (1/1) ... [2022-11-02 21:03:08,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:03:08,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47a74db-7bf7-473c-8748-bac3424cf9b8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:08,873 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47a74db-7bf7-473c-8748-bac3424cf9b8/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:03:08,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47a74db-7bf7-473c-8748-bac3424cf9b8/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:03:08,932 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-02 21:03:08,932 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-02 21:03:08,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:03:08,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:03:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:03:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:03:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:03:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:03:08,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:03:08,937 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 21:03:09,154 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:03:09,162 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:03:09,695 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:03:09,830 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:03:09,830 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-02 21:03:09,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:03:09 BoogieIcfgContainer [2022-11-02 21:03:09,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:03:09,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:03:09,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:03:09,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:03:09,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:03:08" (1/3) ... [2022-11-02 21:03:09,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76079d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:03:09, skipping insertion in model container [2022-11-02 21:03:09,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:08" (2/3) ... [2022-11-02 21:03:09,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76079d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:03:09, skipping insertion in model container [2022-11-02 21:03:09,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:03:09" (3/3) ... [2022-11-02 21:03:09,850 INFO L112 eAbstractionObserver]: Analyzing ICFG 44_Solaris_space_map_sliced.i [2022-11-02 21:03:09,859 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 21:03:09,870 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:03:09,870 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2022-11-02 21:03:09,870 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 21:03:09,981 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 21:03:10,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 249 transitions, 503 flow [2022-11-02 21:03:10,161 INFO L130 PetriNetUnfolder]: 54/260 cut-off events. [2022-11-02 21:03:10,161 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 21:03:10,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 260 events. 54/260 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 855 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 230. Up to 9 conditions per place. [2022-11-02 21:03:10,169 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 249 transitions, 503 flow [2022-11-02 21:03:10,183 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 249 transitions, 503 flow [2022-11-02 21:03:10,204 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:03:10,215 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;@5db79aaf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:03:10,215 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-02 21:03:10,223 INFO L130 PetriNetUnfolder]: 2/40 cut-off events. [2022-11-02 21:03:10,224 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 21:03:10,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:10,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:10,225 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err8ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err8ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2022-11-02 21:03:10,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:10,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1488724176, now seen corresponding path program 1 times [2022-11-02 21:03:10,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:10,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077709827] [2022-11-02 21:03:10,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:10,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:10,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:10,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:10,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077709827] [2022-11-02 21:03:10,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077709827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:10,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:10,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:03:10,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578293880] [2022-11-02 21:03:10,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:10,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:03:10,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:10,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:03:10,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:03:10,694 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 249 [2022-11-02 21:03:10,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 249 transitions, 503 flow. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:10,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:10,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 249 [2022-11-02 21:03:10,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:10,845 INFO L130 PetriNetUnfolder]: 19/187 cut-off events. [2022-11-02 21:03:10,845 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 21:03:10,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 187 events. 19/187 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 570 event pairs, 0 based on Foata normal form. 42/206 useless extension candidates. Maximal degree in co-relation 191. Up to 21 conditions per place. [2022-11-02 21:03:10,852 INFO L137 encePairwiseOnDemand]: 204/249 looper letters, 17 selfloop transitions, 12 changer transitions 0/183 dead transitions. [2022-11-02 21:03:10,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 183 transitions, 429 flow [2022-11-02 21:03:10,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:03:10,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:03:10,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 568 transitions. [2022-11-02 21:03:10,880 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7603748326639893 [2022-11-02 21:03:10,881 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 568 transitions. [2022-11-02 21:03:10,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 568 transitions. [2022-11-02 21:03:10,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:10,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 568 transitions. [2022-11-02 21:03:10,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:10,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:10,907 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:10,909 INFO L175 Difference]: Start difference. First operand has 199 places, 249 transitions, 503 flow. Second operand 3 states and 568 transitions. [2022-11-02 21:03:10,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 183 transitions, 429 flow [2022-11-02 21:03:10,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 183 transitions, 429 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:03:10,926 INFO L231 Difference]: Finished difference. Result has 169 places, 183 transitions, 395 flow [2022-11-02 21:03:10,929 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=395, PETRI_PLACES=169, PETRI_TRANSITIONS=183} [2022-11-02 21:03:10,935 INFO L287 CegarLoopForPetriNet]: 199 programPoint places, -30 predicate places. [2022-11-02 21:03:10,935 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 183 transitions, 395 flow [2022-11-02 21:03:10,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:10,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:10,936 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:10,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:03:10,937 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err8ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2022-11-02 21:03:10,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:10,938 INFO L85 PathProgramCache]: Analyzing trace with hash 915760687, now seen corresponding path program 1 times [2022-11-02 21:03:10,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:10,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872535070] [2022-11-02 21:03:10,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:10,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:03:10,976 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:03:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:03:11,033 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:03:11,040 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:03:11,042 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-11-02 21:03:11,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (17 of 19 remaining) [2022-11-02 21:03:11,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (16 of 19 remaining) [2022-11-02 21:03:11,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (15 of 19 remaining) [2022-11-02 21:03:11,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (14 of 19 remaining) [2022-11-02 21:03:11,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (13 of 19 remaining) [2022-11-02 21:03:11,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (12 of 19 remaining) [2022-11-02 21:03:11,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (11 of 19 remaining) [2022-11-02 21:03:11,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (10 of 19 remaining) [2022-11-02 21:03:11,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (9 of 19 remaining) [2022-11-02 21:03:11,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (8 of 19 remaining) [2022-11-02 21:03:11,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 19 remaining) [2022-11-02 21:03:11,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 19 remaining) [2022-11-02 21:03:11,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 19 remaining) [2022-11-02 21:03:11,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (4 of 19 remaining) [2022-11-02 21:03:11,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (3 of 19 remaining) [2022-11-02 21:03:11,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (2 of 19 remaining) [2022-11-02 21:03:11,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (1 of 19 remaining) [2022-11-02 21:03:11,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (0 of 19 remaining) [2022-11-02 21:03:11,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:03:11,062 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-02 21:03:11,065 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 21:03:11,066 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 21:03:11,183 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 21:03:11,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 367 places, 467 transitions, 946 flow [2022-11-02 21:03:11,413 INFO L130 PetriNetUnfolder]: 107/491 cut-off events. [2022-11-02 21:03:11,414 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 21:03:11,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 491 events. 107/491 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2258 event pairs, 0 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 447. Up to 9 conditions per place. [2022-11-02 21:03:11,433 INFO L82 GeneralOperation]: Start removeDead. Operand has 367 places, 467 transitions, 946 flow [2022-11-02 21:03:11,450 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 367 places, 467 transitions, 946 flow [2022-11-02 21:03:11,455 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:03:11,457 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;@5db79aaf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:03:11,457 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2022-11-02 21:03:11,466 INFO L130 PetriNetUnfolder]: 2/41 cut-off events. [2022-11-02 21:03:11,467 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 21:03:11,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:11,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:11,468 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err8ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err8ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2022-11-02 21:03:11,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:11,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1631231831, now seen corresponding path program 1 times [2022-11-02 21:03:11,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:11,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949314767] [2022-11-02 21:03:11,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:11,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:11,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:11,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:11,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949314767] [2022-11-02 21:03:11,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949314767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:11,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:11,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:03:11,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151404682] [2022-11-02 21:03:11,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:11,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:03:11,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:11,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:03:11,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:03:11,680 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 467 [2022-11-02 21:03:11,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 467 transitions, 946 flow. Second operand has 3 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:11,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:11,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 467 [2022-11-02 21:03:11,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:12,309 INFO L130 PetriNetUnfolder]: 345/2347 cut-off events. [2022-11-02 21:03:12,309 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2022-11-02 21:03:12,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2862 conditions, 2347 events. 345/2347 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 19986 event pairs, 42 based on Foata normal form. 849/2857 useless extension candidates. Maximal degree in co-relation 2514. Up to 333 conditions per place. [2022-11-02 21:03:12,324 INFO L137 encePairwiseOnDemand]: 379/467 looper letters, 34 selfloop transitions, 24 changer transitions 0/343 dead transitions. [2022-11-02 21:03:12,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 343 transitions, 819 flow [2022-11-02 21:03:12,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:03:12,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:03:12,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1064 transitions. [2022-11-02 21:03:12,328 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7594575303354747 [2022-11-02 21:03:12,328 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1064 transitions. [2022-11-02 21:03:12,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1064 transitions. [2022-11-02 21:03:12,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:12,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1064 transitions. [2022-11-02 21:03:12,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 354.6666666666667) internal successors, (1064), 3 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:12,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:12,336 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:12,337 INFO L175 Difference]: Start difference. First operand has 367 places, 467 transitions, 946 flow. Second operand 3 states and 1064 transitions. [2022-11-02 21:03:12,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 343 transitions, 819 flow [2022-11-02 21:03:12,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 343 transitions, 817 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-02 21:03:12,345 INFO L231 Difference]: Finished difference. Result has 311 places, 342 transitions, 742 flow [2022-11-02 21:03:12,345 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=742, PETRI_PLACES=311, PETRI_TRANSITIONS=342} [2022-11-02 21:03:12,346 INFO L287 CegarLoopForPetriNet]: 367 programPoint places, -56 predicate places. [2022-11-02 21:03:12,347 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 342 transitions, 742 flow [2022-11-02 21:03:12,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:12,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:12,348 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:12,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:03:12,348 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err8ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2022-11-02 21:03:12,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:12,349 INFO L85 PathProgramCache]: Analyzing trace with hash 629357156, now seen corresponding path program 1 times [2022-11-02 21:03:12,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:12,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849675433] [2022-11-02 21:03:12,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:12,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:03:12,364 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:03:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:03:12,377 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:03:12,377 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:03:12,378 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (27 of 28 remaining) [2022-11-02 21:03:12,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (26 of 28 remaining) [2022-11-02 21:03:12,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (25 of 28 remaining) [2022-11-02 21:03:12,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (24 of 28 remaining) [2022-11-02 21:03:12,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (23 of 28 remaining) [2022-11-02 21:03:12,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (22 of 28 remaining) [2022-11-02 21:03:12,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (21 of 28 remaining) [2022-11-02 21:03:12,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (20 of 28 remaining) [2022-11-02 21:03:12,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (19 of 28 remaining) [2022-11-02 21:03:12,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (18 of 28 remaining) [2022-11-02 21:03:12,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (17 of 28 remaining) [2022-11-02 21:03:12,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (16 of 28 remaining) [2022-11-02 21:03:12,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (15 of 28 remaining) [2022-11-02 21:03:12,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (14 of 28 remaining) [2022-11-02 21:03:12,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (13 of 28 remaining) [2022-11-02 21:03:12,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (12 of 28 remaining) [2022-11-02 21:03:12,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (11 of 28 remaining) [2022-11-02 21:03:12,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (10 of 28 remaining) [2022-11-02 21:03:12,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (9 of 28 remaining) [2022-11-02 21:03:12,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (8 of 28 remaining) [2022-11-02 21:03:12,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 28 remaining) [2022-11-02 21:03:12,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 28 remaining) [2022-11-02 21:03:12,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 28 remaining) [2022-11-02 21:03:12,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (4 of 28 remaining) [2022-11-02 21:03:12,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (3 of 28 remaining) [2022-11-02 21:03:12,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (2 of 28 remaining) [2022-11-02 21:03:12,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (1 of 28 remaining) [2022-11-02 21:03:12,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (0 of 28 remaining) [2022-11-02 21:03:12,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:03:12,385 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-02 21:03:12,385 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 21:03:12,385 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-02 21:03:12,481 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 21:03:12,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 535 places, 685 transitions, 1391 flow [2022-11-02 21:03:12,724 INFO L130 PetriNetUnfolder]: 160/722 cut-off events. [2022-11-02 21:03:12,724 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-02 21:03:12,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 738 conditions, 722 events. 160/722 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3820 event pairs, 0 based on Foata normal form. 0/531 useless extension candidates. Maximal degree in co-relation 664. Up to 9 conditions per place. [2022-11-02 21:03:12,763 INFO L82 GeneralOperation]: Start removeDead. Operand has 535 places, 685 transitions, 1391 flow [2022-11-02 21:03:12,788 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 535 places, 685 transitions, 1391 flow [2022-11-02 21:03:12,810 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:03:12,810 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;@5db79aaf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:03:12,811 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2022-11-02 21:03:12,823 INFO L130 PetriNetUnfolder]: 2/39 cut-off events. [2022-11-02 21:03:12,823 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 21:03:12,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:12,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:12,823 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err8ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err8ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 33 more)] === [2022-11-02 21:03:12,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:12,824 INFO L85 PathProgramCache]: Analyzing trace with hash -232983006, now seen corresponding path program 1 times [2022-11-02 21:03:12,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:12,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880075296] [2022-11-02 21:03:12,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:12,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:12,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:12,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:12,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880075296] [2022-11-02 21:03:12,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880075296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:12,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:12,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:03:12,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233275733] [2022-11-02 21:03:12,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:12,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:03:12,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:12,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:03:12,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:03:12,914 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 448 out of 685 [2022-11-02 21:03:12,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 685 transitions, 1391 flow. Second operand has 3 states, 3 states have (on average 449.3333333333333) internal successors, (1348), 3 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:12,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:12,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 448 of 685 [2022-11-02 21:03:12,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:16,955 INFO L130 PetriNetUnfolder]: 3978/24717 cut-off events. [2022-11-02 21:03:16,956 INFO L131 PetriNetUnfolder]: For 1891/1891 co-relation queries the response was YES. [2022-11-02 21:03:17,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30714 conditions, 24717 events. 3978/24717 cut-off events. For 1891/1891 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 334910 event pairs, 543 based on Foata normal form. 12122/33207 useless extension candidates. Maximal degree in co-relation 17172. Up to 3672 conditions per place. [2022-11-02 21:03:17,134 INFO L137 encePairwiseOnDemand]: 554/685 looper letters, 51 selfloop transitions, 36 changer transitions 0/503 dead transitions. [2022-11-02 21:03:17,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 503 transitions, 1213 flow [2022-11-02 21:03:17,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:03:17,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:03:17,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1552 transitions. [2022-11-02 21:03:17,139 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7552311435523115 [2022-11-02 21:03:17,139 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1552 transitions. [2022-11-02 21:03:17,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1552 transitions. [2022-11-02 21:03:17,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:17,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1552 transitions. [2022-11-02 21:03:17,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 517.3333333333334) internal successors, (1552), 3 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:17,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 685.0) internal successors, (2740), 4 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:17,151 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 685.0) internal successors, (2740), 4 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:17,151 INFO L175 Difference]: Start difference. First operand has 535 places, 685 transitions, 1391 flow. Second operand 3 states and 1552 transitions. [2022-11-02 21:03:17,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 503 transitions, 1213 flow [2022-11-02 21:03:17,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 503 transitions, 1205 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-11-02 21:03:17,163 INFO L231 Difference]: Finished difference. Result has 453 places, 501 transitions, 1089 flow [2022-11-02 21:03:17,164 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1089, PETRI_PLACES=453, PETRI_TRANSITIONS=501} [2022-11-02 21:03:17,166 INFO L287 CegarLoopForPetriNet]: 535 programPoint places, -82 predicate places. [2022-11-02 21:03:17,167 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 501 transitions, 1089 flow [2022-11-02 21:03:17,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 449.3333333333333) internal successors, (1348), 3 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:17,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:17,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:17,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:03:17,171 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err8ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 33 more)] === [2022-11-02 21:03:17,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:17,172 INFO L85 PathProgramCache]: Analyzing trace with hash 443104880, now seen corresponding path program 1 times [2022-11-02 21:03:17,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:17,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271751379] [2022-11-02 21:03:17,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:17,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:17,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:17,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:17,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271751379] [2022-11-02 21:03:17,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271751379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:17,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:17,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:03:17,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316785325] [2022-11-02 21:03:17,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:17,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:03:17,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:17,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:03:17,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:03:17,355 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 520 out of 685 [2022-11-02 21:03:17,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 501 transitions, 1089 flow. Second operand has 3 states, 3 states have (on average 521.6666666666666) internal successors, (1565), 3 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:17,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:17,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 520 of 685 [2022-11-02 21:03:17,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:20,867 INFO L130 PetriNetUnfolder]: 3511/23771 cut-off events. [2022-11-02 21:03:20,867 INFO L131 PetriNetUnfolder]: For 1485/1615 co-relation queries the response was YES. [2022-11-02 21:03:20,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29447 conditions, 23771 events. 3511/23771 cut-off events. For 1485/1615 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 321287 event pairs, 318 based on Foata normal form. 0/20562 useless extension candidates. Maximal degree in co-relation 29174. Up to 1946 conditions per place. [2022-11-02 21:03:21,034 INFO L137 encePairwiseOnDemand]: 669/685 looper letters, 104 selfloop transitions, 7 changer transitions 0/548 dead transitions. [2022-11-02 21:03:21,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 548 transitions, 1475 flow [2022-11-02 21:03:21,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:03:21,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:03:21,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1680 transitions. [2022-11-02 21:03:21,039 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8175182481751825 [2022-11-02 21:03:21,039 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1680 transitions. [2022-11-02 21:03:21,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1680 transitions. [2022-11-02 21:03:21,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:21,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1680 transitions. [2022-11-02 21:03:21,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 560.0) internal successors, (1680), 3 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:21,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 685.0) internal successors, (2740), 4 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:21,052 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 685.0) internal successors, (2740), 4 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:21,052 INFO L175 Difference]: Start difference. First operand has 453 places, 501 transitions, 1089 flow. Second operand 3 states and 1680 transitions. [2022-11-02 21:03:21,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 548 transitions, 1475 flow [2022-11-02 21:03:21,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 548 transitions, 1409 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 21:03:21,076 INFO L231 Difference]: Finished difference. Result has 456 places, 507 transitions, 1123 flow [2022-11-02 21:03:21,077 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1123, PETRI_PLACES=456, PETRI_TRANSITIONS=507} [2022-11-02 21:03:21,079 INFO L287 CegarLoopForPetriNet]: 535 programPoint places, -79 predicate places. [2022-11-02 21:03:21,081 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 507 transitions, 1123 flow [2022-11-02 21:03:21,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 521.6666666666666) internal successors, (1565), 3 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:21,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:21,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:21,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:03:21,086 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err8ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 33 more)] === [2022-11-02 21:03:21,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:21,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1768441860, now seen corresponding path program 1 times [2022-11-02 21:03:21,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:21,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203485199] [2022-11-02 21:03:21,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:21,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:21,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:21,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:21,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203485199] [2022-11-02 21:03:21,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203485199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:21,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:21,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:03:21,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304041108] [2022-11-02 21:03:21,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:21,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:03:21,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:21,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:03:21,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:03:21,157 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 520 out of 685 [2022-11-02 21:03:21,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 507 transitions, 1123 flow. Second operand has 3 states, 3 states have (on average 521.6666666666666) internal successors, (1565), 3 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:21,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:21,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 520 of 685 [2022-11-02 21:03:21,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:24,648 INFO L130 PetriNetUnfolder]: 3937/29013 cut-off events. [2022-11-02 21:03:24,648 INFO L131 PetriNetUnfolder]: For 1086/1234 co-relation queries the response was YES. [2022-11-02 21:03:24,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35497 conditions, 29013 events. 3937/29013 cut-off events. For 1086/1234 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 411519 event pairs, 656 based on Foata normal form. 0/25720 useless extension candidates. Maximal degree in co-relation 35216. Up to 2559 conditions per place. [2022-11-02 21:03:24,877 INFO L137 encePairwiseOnDemand]: 666/685 looper letters, 86 selfloop transitions, 10 changer transitions 0/539 dead transitions. [2022-11-02 21:03:24,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 539 transitions, 1419 flow [2022-11-02 21:03:24,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:03:24,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:03:24,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1665 transitions. [2022-11-02 21:03:24,883 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8102189781021898 [2022-11-02 21:03:24,883 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1665 transitions. [2022-11-02 21:03:24,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1665 transitions. [2022-11-02 21:03:24,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:24,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1665 transitions. [2022-11-02 21:03:24,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 555.0) internal successors, (1665), 3 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:24,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 685.0) internal successors, (2740), 4 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:24,898 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 685.0) internal successors, (2740), 4 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:24,898 INFO L175 Difference]: Start difference. First operand has 456 places, 507 transitions, 1123 flow. Second operand 3 states and 1665 transitions. [2022-11-02 21:03:24,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 539 transitions, 1419 flow [2022-11-02 21:03:24,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 539 transitions, 1405 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 21:03:24,920 INFO L231 Difference]: Finished difference. Result has 458 places, 507 transitions, 1167 flow [2022-11-02 21:03:24,921 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=685, PETRI_DIFFERENCE_MINUEND_FLOW=1097, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1167, PETRI_PLACES=458, PETRI_TRANSITIONS=507} [2022-11-02 21:03:24,922 INFO L287 CegarLoopForPetriNet]: 535 programPoint places, -77 predicate places. [2022-11-02 21:03:24,922 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 507 transitions, 1167 flow [2022-11-02 21:03:24,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 521.6666666666666) internal successors, (1565), 3 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:24,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:24,924 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:24,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:03:24,925 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err8ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 33 more)] === [2022-11-02 21:03:24,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:24,925 INFO L85 PathProgramCache]: Analyzing trace with hash 697064334, now seen corresponding path program 1 times [2022-11-02 21:03:24,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:24,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388128888] [2022-11-02 21:03:24,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:24,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:03:24,957 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:03:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:03:24,985 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:03:24,986 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:03:24,986 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 37 remaining) [2022-11-02 21:03:24,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (35 of 37 remaining) [2022-11-02 21:03:24,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (34 of 37 remaining) [2022-11-02 21:03:24,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (33 of 37 remaining) [2022-11-02 21:03:24,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (32 of 37 remaining) [2022-11-02 21:03:24,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (31 of 37 remaining) [2022-11-02 21:03:24,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (30 of 37 remaining) [2022-11-02 21:03:24,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (29 of 37 remaining) [2022-11-02 21:03:24,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (28 of 37 remaining) [2022-11-02 21:03:24,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (27 of 37 remaining) [2022-11-02 21:03:24,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (26 of 37 remaining) [2022-11-02 21:03:24,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (25 of 37 remaining) [2022-11-02 21:03:24,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (24 of 37 remaining) [2022-11-02 21:03:24,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (23 of 37 remaining) [2022-11-02 21:03:24,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (22 of 37 remaining) [2022-11-02 21:03:24,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (21 of 37 remaining) [2022-11-02 21:03:24,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (20 of 37 remaining) [2022-11-02 21:03:24,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (19 of 37 remaining) [2022-11-02 21:03:24,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (18 of 37 remaining) [2022-11-02 21:03:24,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (17 of 37 remaining) [2022-11-02 21:03:24,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (16 of 37 remaining) [2022-11-02 21:03:24,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (15 of 37 remaining) [2022-11-02 21:03:24,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (14 of 37 remaining) [2022-11-02 21:03:24,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (13 of 37 remaining) [2022-11-02 21:03:24,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (12 of 37 remaining) [2022-11-02 21:03:24,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (11 of 37 remaining) [2022-11-02 21:03:24,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (10 of 37 remaining) [2022-11-02 21:03:24,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (9 of 37 remaining) [2022-11-02 21:03:24,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (8 of 37 remaining) [2022-11-02 21:03:24,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 37 remaining) [2022-11-02 21:03:24,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 37 remaining) [2022-11-02 21:03:24,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 37 remaining) [2022-11-02 21:03:24,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (4 of 37 remaining) [2022-11-02 21:03:24,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (3 of 37 remaining) [2022-11-02 21:03:24,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (2 of 37 remaining) [2022-11-02 21:03:24,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (1 of 37 remaining) [2022-11-02 21:03:24,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (0 of 37 remaining) [2022-11-02 21:03:24,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:03:24,995 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-02 21:03:24,996 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 21:03:24,996 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-02 21:03:25,097 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 21:03:25,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 703 places, 903 transitions, 1838 flow [2022-11-02 21:03:25,871 INFO L130 PetriNetUnfolder]: 213/953 cut-off events. [2022-11-02 21:03:25,871 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-02 21:03:25,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 976 conditions, 953 events. 213/953 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5332 event pairs, 0 based on Foata normal form. 0/699 useless extension candidates. Maximal degree in co-relation 881. Up to 10 conditions per place. [2022-11-02 21:03:25,901 INFO L82 GeneralOperation]: Start removeDead. Operand has 703 places, 903 transitions, 1838 flow [2022-11-02 21:03:25,933 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 703 places, 903 transitions, 1838 flow [2022-11-02 21:03:25,934 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:03:25,934 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;@5db79aaf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:03:25,934 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2022-11-02 21:03:25,937 INFO L130 PetriNetUnfolder]: 2/38 cut-off events. [2022-11-02 21:03:25,937 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 21:03:25,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:25,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:25,938 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err8ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err8ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 42 more)] === [2022-11-02 21:03:25,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:25,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1575584741, now seen corresponding path program 1 times [2022-11-02 21:03:25,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:25,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519336349] [2022-11-02 21:03:25,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:25,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:26,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:26,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:26,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519336349] [2022-11-02 21:03:26,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519336349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:26,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:26,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:03:26,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428562649] [2022-11-02 21:03:26,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:26,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:03:26,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:26,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:03:26,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:03:26,010 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 588 out of 903 [2022-11-02 21:03:26,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 703 places, 903 transitions, 1838 flow. Second operand has 3 states, 3 states have (on average 589.3333333333334) internal successors, (1768), 3 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:26,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:26,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 588 of 903 [2022-11-02 21:03:26,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:57,687 INFO L130 PetriNetUnfolder]: 38866/232369 cut-off events. [2022-11-02 21:03:57,687 INFO L131 PetriNetUnfolder]: For 31796/31796 co-relation queries the response was YES. [2022-11-02 21:03:58,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293352 conditions, 232369 events. 38866/232369 cut-off events. For 31796/31796 co-relation queries the response was YES. Maximal size of possible extension queue 4326. Compared 4292460 event pairs, 7038 based on Foata normal form. 144467/342625 useless extension candidates. Maximal degree in co-relation 170533. Up to 35130 conditions per place. [2022-11-02 21:03:59,773 INFO L137 encePairwiseOnDemand]: 729/903 looper letters, 68 selfloop transitions, 48 changer transitions 0/663 dead transitions. [2022-11-02 21:03:59,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 663 transitions, 1611 flow [2022-11-02 21:03:59,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:03:59,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:03:59,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2040 transitions. [2022-11-02 21:03:59,780 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7530454042081949 [2022-11-02 21:03:59,780 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2040 transitions. [2022-11-02 21:03:59,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2040 transitions. [2022-11-02 21:03:59,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:59,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2040 transitions. [2022-11-02 21:03:59,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 680.0) internal successors, (2040), 3 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:59,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 903.0) internal successors, (3612), 4 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:59,797 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 903.0) internal successors, (3612), 4 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:59,797 INFO L175 Difference]: Start difference. First operand has 703 places, 903 transitions, 1838 flow. Second operand 3 states and 2040 transitions. [2022-11-02 21:03:59,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 663 transitions, 1611 flow [2022-11-02 21:03:59,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 663 transitions, 1593 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-11-02 21:03:59,822 INFO L231 Difference]: Finished difference. Result has 595 places, 660 transitions, 1436 flow [2022-11-02 21:03:59,824 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=903, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1436, PETRI_PLACES=595, PETRI_TRANSITIONS=660} [2022-11-02 21:03:59,826 INFO L287 CegarLoopForPetriNet]: 703 programPoint places, -108 predicate places. [2022-11-02 21:03:59,827 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 660 transitions, 1436 flow [2022-11-02 21:03:59,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 589.3333333333334) internal successors, (1768), 3 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:59,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:59,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:59,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:03:59,830 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err8ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 42 more)] === [2022-11-02 21:03:59,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:59,830 INFO L85 PathProgramCache]: Analyzing trace with hash -897917207, now seen corresponding path program 1 times [2022-11-02 21:03:59,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:59,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296974778] [2022-11-02 21:03:59,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:59,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:59,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:59,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:59,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296974778] [2022-11-02 21:03:59,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296974778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:59,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:59,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:03:59,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8818083] [2022-11-02 21:03:59,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:59,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:03:59,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:59,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:03:59,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:03:59,989 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 684 out of 903 [2022-11-02 21:03:59,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 660 transitions, 1436 flow. Second operand has 3 states, 3 states have (on average 685.6666666666666) internal successors, (2057), 3 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:59,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:59,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 684 of 903 [2022-11-02 21:03:59,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand