./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 dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6efe1e-43cd-4132-b992-2e529fb228ec/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6efe1e-43cd-4132-b992-2e529fb228ec/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6efe1e-43cd-4132-b992-2e529fb228ec/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6efe1e-43cd-4132-b992-2e529fb228ec/bin/uautomizer-J5u9QxTXDZ/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_2d6efe1e-43cd-4132-b992-2e529fb228ec/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6efe1e-43cd-4132-b992-2e529fb228ec/bin/uautomizer-J5u9QxTXDZ --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-dbf71c6-m [2022-10-17 11:02:21,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:02:21,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:02:21,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:02:21,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:02:21,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:02:21,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:02:21,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:02:21,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:02:21,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:02:21,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:02:21,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:02:21,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:02:21,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:02:21,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:02:21,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:02:21,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:02:21,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:02:21,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:02:21,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:02:21,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:02:21,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:02:21,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:02:21,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:02:21,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:02:21,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:02:21,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:02:21,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:02:21,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:02:21,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:02:21,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:02:21,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:02:21,802 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:02:21,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:02:21,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:02:21,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:02:21,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:02:21,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:02:21,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:02:21,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:02:21,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:02:21,810 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6efe1e-43cd-4132-b992-2e529fb228ec/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 11:02:21,833 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:02:21,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:02:21,835 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:02:21,836 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:02:21,836 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:02:21,837 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:02:21,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:02:21,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:02:21,838 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:02:21,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:02:21,839 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 11:02:21,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:02:21,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 11:02:21,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:02:21,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:02:21,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:02:21,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:02:21,841 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 11:02:21,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:02:21,841 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:02:21,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:02:21,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:02:21,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:02:21,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:02:21,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:02:21,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:02:21,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:02:21,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:02:21,843 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:02:21,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:02:21,844 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:02:21,844 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:02:21,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:02:21,845 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_2d6efe1e-43cd-4132-b992-2e529fb228ec/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6efe1e-43cd-4132-b992-2e529fb228ec/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33c040d0fbd9b1f189d3917c569371e7923ba6ef4820715ff1ef4976213f5b31 [2022-10-17 11:02:22,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:02:22,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:02:22,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:02:22,146 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:02:22,147 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:02:22,148 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6efe1e-43cd-4132-b992-2e529fb228ec/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i [2022-10-17 11:02:22,224 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6efe1e-43cd-4132-b992-2e529fb228ec/bin/uautomizer-J5u9QxTXDZ/data/3410d0a21/27299ba0db734001b07a269195fecaf5/FLAG21d825f46 [2022-10-17 11:02:22,783 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:02:22,784 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6efe1e-43cd-4132-b992-2e529fb228ec/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i [2022-10-17 11:02:22,800 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6efe1e-43cd-4132-b992-2e529fb228ec/bin/uautomizer-J5u9QxTXDZ/data/3410d0a21/27299ba0db734001b07a269195fecaf5/FLAG21d825f46 [2022-10-17 11:02:23,073 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6efe1e-43cd-4132-b992-2e529fb228ec/bin/uautomizer-J5u9QxTXDZ/data/3410d0a21/27299ba0db734001b07a269195fecaf5 [2022-10-17 11:02:23,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:02:23,077 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:02:23,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:02:23,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:02:23,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:02:23,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:02:23" (1/1) ... [2022-10-17 11:02:23,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a6af26f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:23, skipping insertion in model container [2022-10-17 11:02:23,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:02:23" (1/1) ... [2022-10-17 11:02:23,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:02:23,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:02:23,474 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_2d6efe1e-43cd-4132-b992-2e529fb228ec/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[30327,30340] [2022-10-17 11:02:23,479 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_2d6efe1e-43cd-4132-b992-2e529fb228ec/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[30457,30470] [2022-10-17 11:02:23,483 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_2d6efe1e-43cd-4132-b992-2e529fb228ec/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[30859,30872] [2022-10-17 11:02:23,487 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_2d6efe1e-43cd-4132-b992-2e529fb228ec/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[31417,31430] [2022-10-17 11:02:23,490 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_2d6efe1e-43cd-4132-b992-2e529fb228ec/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[31600,31613] [2022-10-17 11:02:23,492 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_2d6efe1e-43cd-4132-b992-2e529fb228ec/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[31761,31774] [2022-10-17 11:02:23,495 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_2d6efe1e-43cd-4132-b992-2e529fb228ec/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[32305,32318] [2022-10-17 11:02:23,497 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_2d6efe1e-43cd-4132-b992-2e529fb228ec/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[32447,32460] [2022-10-17 11:02:23,501 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_2d6efe1e-43cd-4132-b992-2e529fb228ec/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[33033,33046] [2022-10-17 11:02:23,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:02:23,513 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:02:23,548 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_2d6efe1e-43cd-4132-b992-2e529fb228ec/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[30327,30340] [2022-10-17 11:02:23,549 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_2d6efe1e-43cd-4132-b992-2e529fb228ec/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[30457,30470] [2022-10-17 11:02:23,551 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_2d6efe1e-43cd-4132-b992-2e529fb228ec/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[30859,30872] [2022-10-17 11:02:23,555 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_2d6efe1e-43cd-4132-b992-2e529fb228ec/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[31417,31430] [2022-10-17 11:02:23,556 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_2d6efe1e-43cd-4132-b992-2e529fb228ec/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[31600,31613] [2022-10-17 11:02:23,557 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_2d6efe1e-43cd-4132-b992-2e529fb228ec/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[31761,31774] [2022-10-17 11:02:23,560 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_2d6efe1e-43cd-4132-b992-2e529fb228ec/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[32305,32318] [2022-10-17 11:02:23,561 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_2d6efe1e-43cd-4132-b992-2e529fb228ec/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[32447,32460] [2022-10-17 11:02:23,564 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_2d6efe1e-43cd-4132-b992-2e529fb228ec/sv-benchmarks/c/pthread-ext/44_Solaris_space_map_sliced.i[33033,33046] [2022-10-17 11:02:23,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:02:23,612 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:02:23,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:23 WrapperNode [2022-10-17 11:02:23,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:02:23,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:02:23,615 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:02:23,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:02:23,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:23" (1/1) ... [2022-10-17 11:02:23,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:23" (1/1) ... [2022-10-17 11:02:23,710 INFO L138 Inliner]: procedures = 178, calls = 34, calls flagged for inlining = 26, calls inlined = 37, statements flattened = 296 [2022-10-17 11:02:23,715 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:02:23,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:02:23,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:02:23,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:02:23,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:23" (1/1) ... [2022-10-17 11:02:23,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:23" (1/1) ... [2022-10-17 11:02:23,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:23" (1/1) ... [2022-10-17 11:02:23,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:23" (1/1) ... [2022-10-17 11:02:23,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:23" (1/1) ... [2022-10-17 11:02:23,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:23" (1/1) ... [2022-10-17 11:02:23,767 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:23" (1/1) ... [2022-10-17 11:02:23,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:23" (1/1) ... [2022-10-17 11:02:23,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:02:23,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:02:23,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:02:23,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:02:23,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:23" (1/1) ... [2022-10-17 11:02:23,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:02:23,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6efe1e-43cd-4132-b992-2e529fb228ec/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:02:23,822 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6efe1e-43cd-4132-b992-2e529fb228ec/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:02:23,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6efe1e-43cd-4132-b992-2e529fb228ec/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:02:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-10-17 11:02:23,869 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-10-17 11:02:23,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 11:02:23,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:02:23,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 11:02:23,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 11:02:23,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 11:02:23,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:02:23,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:02:23,872 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 11:02:24,045 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:02:24,047 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:02:24,604 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:02:24,782 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:02:24,783 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-10-17 11:02:24,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:02:24 BoogieIcfgContainer [2022-10-17 11:02:24,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:02:24,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:02:24,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:02:24,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:02:24,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:02:23" (1/3) ... [2022-10-17 11:02:24,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65efe653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:02:24, skipping insertion in model container [2022-10-17 11:02:24,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:23" (2/3) ... [2022-10-17 11:02:24,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65efe653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:02:24, skipping insertion in model container [2022-10-17 11:02:24,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:02:24" (3/3) ... [2022-10-17 11:02:24,801 INFO L112 eAbstractionObserver]: Analyzing ICFG 44_Solaris_space_map_sliced.i [2022-10-17 11:02:24,810 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 11:02:24,820 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:02:24,820 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2022-10-17 11:02:24,821 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 11:02:24,928 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 11:02:24,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 249 transitions, 503 flow [2022-10-17 11:02:25,048 INFO L130 PetriNetUnfolder]: 54/260 cut-off events. [2022-10-17 11:02:25,048 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 11:02:25,054 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. [2022-10-17 11:02:25,055 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 249 transitions, 503 flow [2022-10-17 11:02:25,063 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 249 transitions, 503 flow [2022-10-17 11:02:25,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:02:25,080 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;@63cad056, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:02:25,081 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-10-17 11:02:25,089 INFO L130 PetriNetUnfolder]: 2/40 cut-off events. [2022-10-17 11:02:25,089 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 11:02:25,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:25,090 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] [2022-10-17 11:02:25,090 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err8ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err8ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2022-10-17 11:02:25,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:25,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1488724176, now seen corresponding path program 1 times [2022-10-17 11:02:25,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:25,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845107996] [2022-10-17 11:02:25,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:25,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:25,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:25,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:25,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845107996] [2022-10-17 11:02:25,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845107996] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:25,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:25,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:02:25,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073256085] [2022-10-17 11:02:25,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:25,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:02:25,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:25,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:02:25,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:02:25,595 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 249 [2022-10-17 11:02:25,601 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) [2022-10-17 11:02:25,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:25,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 249 [2022-10-17 11:02:25,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:25,745 INFO L130 PetriNetUnfolder]: 19/187 cut-off events. [2022-10-17 11:02:25,746 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-10-17 11:02:25,748 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. [2022-10-17 11:02:25,751 INFO L137 encePairwiseOnDemand]: 204/249 looper letters, 17 selfloop transitions, 12 changer transitions 0/183 dead transitions. [2022-10-17 11:02:25,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 183 transitions, 429 flow [2022-10-17 11:02:25,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:02:25,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 11:02:25,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 568 transitions. [2022-10-17 11:02:25,776 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7603748326639893 [2022-10-17 11:02:25,777 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 568 transitions. [2022-10-17 11:02:25,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 568 transitions. [2022-10-17 11:02:25,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:25,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 568 transitions. [2022-10-17 11:02:25,790 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) [2022-10-17 11:02:25,800 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) [2022-10-17 11:02:25,801 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) [2022-10-17 11:02:25,803 INFO L175 Difference]: Start difference. First operand has 199 places, 249 transitions, 503 flow. Second operand 3 states and 568 transitions. [2022-10-17 11:02:25,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 183 transitions, 429 flow [2022-10-17 11:02:25,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 183 transitions, 429 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 11:02:25,816 INFO L231 Difference]: Finished difference. Result has 169 places, 183 transitions, 395 flow [2022-10-17 11:02:25,819 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} [2022-10-17 11:02:25,823 INFO L287 CegarLoopForPetriNet]: 199 programPoint places, -30 predicate places. [2022-10-17 11:02:25,824 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 183 transitions, 395 flow [2022-10-17 11:02:25,825 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) [2022-10-17 11:02:25,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:25,825 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] [2022-10-17 11:02:25,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 11:02:25,826 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)] === [2022-10-17 11:02:25,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:25,828 INFO L85 PathProgramCache]: Analyzing trace with hash 915760687, now seen corresponding path program 1 times [2022-10-17 11:02:25,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:25,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092821487] [2022-10-17 11:02:25,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:25,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:25,876 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 11:02:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:25,932 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 11:02:25,932 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 11:02:25,934 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-10-17 11:02:25,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (17 of 19 remaining) [2022-10-17 11:02:25,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (16 of 19 remaining) [2022-10-17 11:02:25,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (15 of 19 remaining) [2022-10-17 11:02:25,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (14 of 19 remaining) [2022-10-17 11:02:25,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (13 of 19 remaining) [2022-10-17 11:02:25,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (12 of 19 remaining) [2022-10-17 11:02:25,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (11 of 19 remaining) [2022-10-17 11:02:25,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (10 of 19 remaining) [2022-10-17 11:02:25,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (9 of 19 remaining) [2022-10-17 11:02:25,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (8 of 19 remaining) [2022-10-17 11:02:25,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 19 remaining) [2022-10-17 11:02:25,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 19 remaining) [2022-10-17 11:02:25,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 19 remaining) [2022-10-17 11:02:25,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (4 of 19 remaining) [2022-10-17 11:02:25,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (3 of 19 remaining) [2022-10-17 11:02:25,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (2 of 19 remaining) [2022-10-17 11:02:25,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (1 of 19 remaining) [2022-10-17 11:02:25,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (0 of 19 remaining) [2022-10-17 11:02:25,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 11:02:25,952 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-17 11:02:25,955 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-17 11:02:25,955 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-10-17 11:02:26,028 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 11:02:26,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 367 places, 467 transitions, 946 flow [2022-10-17 11:02:26,177 INFO L130 PetriNetUnfolder]: 107/491 cut-off events. [2022-10-17 11:02:26,177 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 11:02:26,192 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. [2022-10-17 11:02:26,192 INFO L82 GeneralOperation]: Start removeDead. Operand has 367 places, 467 transitions, 946 flow [2022-10-17 11:02:26,205 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 367 places, 467 transitions, 946 flow [2022-10-17 11:02:26,207 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:02:26,208 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;@63cad056, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:02:26,209 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2022-10-17 11:02:26,216 INFO L130 PetriNetUnfolder]: 2/41 cut-off events. [2022-10-17 11:02:26,216 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 11:02:26,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:26,217 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] [2022-10-17 11:02:26,217 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err8ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err8ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2022-10-17 11:02:26,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:26,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1631231831, now seen corresponding path program 1 times [2022-10-17 11:02:26,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:26,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392108033] [2022-10-17 11:02:26,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:26,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:26,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:26,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:26,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392108033] [2022-10-17 11:02:26,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392108033] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:26,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:26,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:02:26,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472233970] [2022-10-17 11:02:26,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:26,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:02:26,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:26,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:02:26,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:02:26,313 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 467 [2022-10-17 11:02:26,315 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) [2022-10-17 11:02:26,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:26,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 467 [2022-10-17 11:02:26,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:26,860 INFO L130 PetriNetUnfolder]: 345/2347 cut-off events. [2022-10-17 11:02:26,860 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2022-10-17 11:02:26,865 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. [2022-10-17 11:02:26,875 INFO L137 encePairwiseOnDemand]: 379/467 looper letters, 34 selfloop transitions, 24 changer transitions 0/343 dead transitions. [2022-10-17 11:02:26,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 343 transitions, 819 flow [2022-10-17 11:02:26,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:02:26,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 11:02:26,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1064 transitions. [2022-10-17 11:02:26,880 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7594575303354747 [2022-10-17 11:02:26,880 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1064 transitions. [2022-10-17 11:02:26,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1064 transitions. [2022-10-17 11:02:26,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:26,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1064 transitions. [2022-10-17 11:02:26,885 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) [2022-10-17 11:02:26,889 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) [2022-10-17 11:02:26,891 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) [2022-10-17 11:02:26,891 INFO L175 Difference]: Start difference. First operand has 367 places, 467 transitions, 946 flow. Second operand 3 states and 1064 transitions. [2022-10-17 11:02:26,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 343 transitions, 819 flow [2022-10-17 11:02:26,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 343 transitions, 817 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-10-17 11:02:26,902 INFO L231 Difference]: Finished difference. Result has 311 places, 342 transitions, 742 flow [2022-10-17 11:02:26,903 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} [2022-10-17 11:02:26,903 INFO L287 CegarLoopForPetriNet]: 367 programPoint places, -56 predicate places. [2022-10-17 11:02:26,904 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 342 transitions, 742 flow [2022-10-17 11:02:26,905 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) [2022-10-17 11:02:26,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:26,905 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] [2022-10-17 11:02:26,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 11:02:26,906 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)] === [2022-10-17 11:02:26,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:26,906 INFO L85 PathProgramCache]: Analyzing trace with hash 629357156, now seen corresponding path program 1 times [2022-10-17 11:02:26,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:26,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679295287] [2022-10-17 11:02:26,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:26,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:26,923 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 11:02:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:26,939 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 11:02:26,939 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 11:02:26,940 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (27 of 28 remaining) [2022-10-17 11:02:26,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (26 of 28 remaining) [2022-10-17 11:02:26,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (25 of 28 remaining) [2022-10-17 11:02:26,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (24 of 28 remaining) [2022-10-17 11:02:26,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (23 of 28 remaining) [2022-10-17 11:02:26,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (22 of 28 remaining) [2022-10-17 11:02:26,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (21 of 28 remaining) [2022-10-17 11:02:26,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (20 of 28 remaining) [2022-10-17 11:02:26,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (19 of 28 remaining) [2022-10-17 11:02:26,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (18 of 28 remaining) [2022-10-17 11:02:26,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (17 of 28 remaining) [2022-10-17 11:02:26,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (16 of 28 remaining) [2022-10-17 11:02:26,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (15 of 28 remaining) [2022-10-17 11:02:26,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (14 of 28 remaining) [2022-10-17 11:02:26,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (13 of 28 remaining) [2022-10-17 11:02:26,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (12 of 28 remaining) [2022-10-17 11:02:26,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (11 of 28 remaining) [2022-10-17 11:02:26,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (10 of 28 remaining) [2022-10-17 11:02:26,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (9 of 28 remaining) [2022-10-17 11:02:26,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (8 of 28 remaining) [2022-10-17 11:02:26,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 28 remaining) [2022-10-17 11:02:26,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 28 remaining) [2022-10-17 11:02:26,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 28 remaining) [2022-10-17 11:02:26,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (4 of 28 remaining) [2022-10-17 11:02:26,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (3 of 28 remaining) [2022-10-17 11:02:26,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (2 of 28 remaining) [2022-10-17 11:02:26,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (1 of 28 remaining) [2022-10-17 11:02:26,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (0 of 28 remaining) [2022-10-17 11:02:26,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 11:02:26,947 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-17 11:02:26,948 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-17 11:02:26,948 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-10-17 11:02:27,046 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 11:02:27,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 535 places, 685 transitions, 1391 flow [2022-10-17 11:02:27,332 INFO L130 PetriNetUnfolder]: 160/722 cut-off events. [2022-10-17 11:02:27,332 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-10-17 11:02:27,357 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. [2022-10-17 11:02:27,357 INFO L82 GeneralOperation]: Start removeDead. Operand has 535 places, 685 transitions, 1391 flow [2022-10-17 11:02:27,385 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 535 places, 685 transitions, 1391 flow [2022-10-17 11:02:27,386 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:02:27,394 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;@63cad056, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:02:27,394 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2022-10-17 11:02:27,400 INFO L130 PetriNetUnfolder]: 2/39 cut-off events. [2022-10-17 11:02:27,400 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 11:02:27,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:27,400 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] [2022-10-17 11:02:27,401 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err8ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err8ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 33 more)] === [2022-10-17 11:02:27,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:27,401 INFO L85 PathProgramCache]: Analyzing trace with hash -232983006, now seen corresponding path program 1 times [2022-10-17 11:02:27,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:27,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116209914] [2022-10-17 11:02:27,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:27,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:27,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:27,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:27,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116209914] [2022-10-17 11:02:27,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116209914] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:27,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:27,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:02:27,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164785806] [2022-10-17 11:02:27,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:27,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:02:27,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:27,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:02:27,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:02:27,533 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 448 out of 685 [2022-10-17 11:02:27,535 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) [2022-10-17 11:02:27,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:27,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 448 of 685 [2022-10-17 11:02:27,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:31,693 INFO L130 PetriNetUnfolder]: 3978/24717 cut-off events. [2022-10-17 11:02:31,693 INFO L131 PetriNetUnfolder]: For 1891/1891 co-relation queries the response was YES. [2022-10-17 11:02:31,816 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. [2022-10-17 11:02:31,905 INFO L137 encePairwiseOnDemand]: 554/685 looper letters, 51 selfloop transitions, 36 changer transitions 0/503 dead transitions. [2022-10-17 11:02:31,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 503 transitions, 1213 flow [2022-10-17 11:02:31,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:02:31,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 11:02:31,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1552 transitions. [2022-10-17 11:02:31,913 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7552311435523115 [2022-10-17 11:02:31,913 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1552 transitions. [2022-10-17 11:02:31,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1552 transitions. [2022-10-17 11:02:31,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:31,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1552 transitions. [2022-10-17 11:02:31,920 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) [2022-10-17 11:02:31,927 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) [2022-10-17 11:02:31,929 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) [2022-10-17 11:02:31,929 INFO L175 Difference]: Start difference. First operand has 535 places, 685 transitions, 1391 flow. Second operand 3 states and 1552 transitions. [2022-10-17 11:02:31,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 503 transitions, 1213 flow [2022-10-17 11:02:31,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 503 transitions, 1205 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-10-17 11:02:31,945 INFO L231 Difference]: Finished difference. Result has 453 places, 501 transitions, 1089 flow [2022-10-17 11:02:31,947 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} [2022-10-17 11:02:31,949 INFO L287 CegarLoopForPetriNet]: 535 programPoint places, -82 predicate places. [2022-10-17 11:02:31,949 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 501 transitions, 1089 flow [2022-10-17 11:02:31,950 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) [2022-10-17 11:02:31,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:31,951 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] [2022-10-17 11:02:31,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 11:02:31,952 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err8ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 33 more)] === [2022-10-17 11:02:31,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:31,952 INFO L85 PathProgramCache]: Analyzing trace with hash 443104880, now seen corresponding path program 1 times [2022-10-17 11:02:31,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:31,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413214526] [2022-10-17 11:02:31,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:31,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:32,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:32,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:32,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413214526] [2022-10-17 11:02:32,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413214526] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:32,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:32,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:02:32,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039506101] [2022-10-17 11:02:32,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:32,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:02:32,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:32,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:02:32,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:02:32,122 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 520 out of 685 [2022-10-17 11:02:32,125 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) [2022-10-17 11:02:32,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:32,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 520 of 685 [2022-10-17 11:02:32,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:35,078 INFO L130 PetriNetUnfolder]: 3511/23771 cut-off events. [2022-10-17 11:02:35,078 INFO L131 PetriNetUnfolder]: For 1485/1615 co-relation queries the response was YES. [2022-10-17 11:02:35,177 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. [2022-10-17 11:02:35,243 INFO L137 encePairwiseOnDemand]: 669/685 looper letters, 104 selfloop transitions, 7 changer transitions 0/548 dead transitions. [2022-10-17 11:02:35,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 548 transitions, 1475 flow [2022-10-17 11:02:35,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:02:35,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 11:02:35,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1680 transitions. [2022-10-17 11:02:35,249 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8175182481751825 [2022-10-17 11:02:35,249 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1680 transitions. [2022-10-17 11:02:35,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1680 transitions. [2022-10-17 11:02:35,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:35,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1680 transitions. [2022-10-17 11:02:35,256 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) [2022-10-17 11:02:35,262 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) [2022-10-17 11:02:35,264 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) [2022-10-17 11:02:35,264 INFO L175 Difference]: Start difference. First operand has 453 places, 501 transitions, 1089 flow. Second operand 3 states and 1680 transitions. [2022-10-17 11:02:35,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 548 transitions, 1475 flow [2022-10-17 11:02:35,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 548 transitions, 1409 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 11:02:35,286 INFO L231 Difference]: Finished difference. Result has 456 places, 507 transitions, 1123 flow [2022-10-17 11:02:35,287 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} [2022-10-17 11:02:35,288 INFO L287 CegarLoopForPetriNet]: 535 programPoint places, -79 predicate places. [2022-10-17 11:02:35,289 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 507 transitions, 1123 flow [2022-10-17 11:02:35,290 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) [2022-10-17 11:02:35,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:35,290 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] [2022-10-17 11:02:35,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 11:02:35,291 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err8ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 33 more)] === [2022-10-17 11:02:35,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:35,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1768441860, now seen corresponding path program 1 times [2022-10-17 11:02:35,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:35,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766512479] [2022-10-17 11:02:35,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:35,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:35,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:35,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:35,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766512479] [2022-10-17 11:02:35,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766512479] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:35,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:35,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:02:35,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488820458] [2022-10-17 11:02:35,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:35,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:02:35,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:35,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:02:35,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:02:35,343 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 520 out of 685 [2022-10-17 11:02:35,345 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) [2022-10-17 11:02:35,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:35,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 520 of 685 [2022-10-17 11:02:35,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:38,748 INFO L130 PetriNetUnfolder]: 3937/29013 cut-off events. [2022-10-17 11:02:38,748 INFO L131 PetriNetUnfolder]: For 1086/1234 co-relation queries the response was YES. [2022-10-17 11:02:38,860 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. [2022-10-17 11:02:38,937 INFO L137 encePairwiseOnDemand]: 666/685 looper letters, 86 selfloop transitions, 10 changer transitions 0/539 dead transitions. [2022-10-17 11:02:38,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 539 transitions, 1419 flow [2022-10-17 11:02:38,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:02:38,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 11:02:38,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1665 transitions. [2022-10-17 11:02:38,943 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8102189781021898 [2022-10-17 11:02:38,943 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1665 transitions. [2022-10-17 11:02:38,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1665 transitions. [2022-10-17 11:02:38,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:38,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1665 transitions. [2022-10-17 11:02:38,950 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) [2022-10-17 11:02:38,956 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) [2022-10-17 11:02:38,959 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) [2022-10-17 11:02:38,959 INFO L175 Difference]: Start difference. First operand has 456 places, 507 transitions, 1123 flow. Second operand 3 states and 1665 transitions. [2022-10-17 11:02:38,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 539 transitions, 1419 flow [2022-10-17 11:02:38,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 539 transitions, 1405 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 11:02:38,983 INFO L231 Difference]: Finished difference. Result has 458 places, 507 transitions, 1167 flow [2022-10-17 11:02:38,984 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} [2022-10-17 11:02:38,985 INFO L287 CegarLoopForPetriNet]: 535 programPoint places, -77 predicate places. [2022-10-17 11:02:38,985 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 507 transitions, 1167 flow [2022-10-17 11:02:38,986 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) [2022-10-17 11:02:38,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:38,987 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] [2022-10-17 11:02:38,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 11:02:38,987 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)] === [2022-10-17 11:02:38,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:38,988 INFO L85 PathProgramCache]: Analyzing trace with hash 697064334, now seen corresponding path program 1 times [2022-10-17 11:02:38,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:38,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715090306] [2022-10-17 11:02:38,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:38,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:39,004 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 11:02:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:39,020 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 11:02:39,021 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 11:02:39,021 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 37 remaining) [2022-10-17 11:02:39,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (35 of 37 remaining) [2022-10-17 11:02:39,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (34 of 37 remaining) [2022-10-17 11:02:39,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (33 of 37 remaining) [2022-10-17 11:02:39,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (32 of 37 remaining) [2022-10-17 11:02:39,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (31 of 37 remaining) [2022-10-17 11:02:39,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (30 of 37 remaining) [2022-10-17 11:02:39,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (29 of 37 remaining) [2022-10-17 11:02:39,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (28 of 37 remaining) [2022-10-17 11:02:39,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (27 of 37 remaining) [2022-10-17 11:02:39,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (26 of 37 remaining) [2022-10-17 11:02:39,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (25 of 37 remaining) [2022-10-17 11:02:39,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (24 of 37 remaining) [2022-10-17 11:02:39,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (23 of 37 remaining) [2022-10-17 11:02:39,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (22 of 37 remaining) [2022-10-17 11:02:39,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (21 of 37 remaining) [2022-10-17 11:02:39,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (20 of 37 remaining) [2022-10-17 11:02:39,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (19 of 37 remaining) [2022-10-17 11:02:39,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (18 of 37 remaining) [2022-10-17 11:02:39,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (17 of 37 remaining) [2022-10-17 11:02:39,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (16 of 37 remaining) [2022-10-17 11:02:39,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (15 of 37 remaining) [2022-10-17 11:02:39,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (14 of 37 remaining) [2022-10-17 11:02:39,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (13 of 37 remaining) [2022-10-17 11:02:39,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (12 of 37 remaining) [2022-10-17 11:02:39,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (11 of 37 remaining) [2022-10-17 11:02:39,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (10 of 37 remaining) [2022-10-17 11:02:39,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (9 of 37 remaining) [2022-10-17 11:02:39,027 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (8 of 37 remaining) [2022-10-17 11:02:39,027 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 37 remaining) [2022-10-17 11:02:39,027 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 37 remaining) [2022-10-17 11:02:39,027 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 37 remaining) [2022-10-17 11:02:39,027 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (4 of 37 remaining) [2022-10-17 11:02:39,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (3 of 37 remaining) [2022-10-17 11:02:39,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (2 of 37 remaining) [2022-10-17 11:02:39,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (1 of 37 remaining) [2022-10-17 11:02:39,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (0 of 37 remaining) [2022-10-17 11:02:39,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 11:02:39,029 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-10-17 11:02:39,029 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-17 11:02:39,030 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-10-17 11:02:39,117 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 11:02:39,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 703 places, 903 transitions, 1838 flow [2022-10-17 11:02:39,486 INFO L130 PetriNetUnfolder]: 213/953 cut-off events. [2022-10-17 11:02:39,487 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-10-17 11:02:39,549 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. [2022-10-17 11:02:39,550 INFO L82 GeneralOperation]: Start removeDead. Operand has 703 places, 903 transitions, 1838 flow [2022-10-17 11:02:39,591 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 703 places, 903 transitions, 1838 flow [2022-10-17 11:02:39,592 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:02:39,593 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;@63cad056, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:02:39,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2022-10-17 11:02:39,596 INFO L130 PetriNetUnfolder]: 2/38 cut-off events. [2022-10-17 11:02:39,596 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 11:02:39,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:39,596 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] [2022-10-17 11:02:39,597 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err8ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err8ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 42 more)] === [2022-10-17 11:02:39,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:39,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1575584741, now seen corresponding path program 1 times [2022-10-17 11:02:39,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:39,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871199119] [2022-10-17 11:02:39,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:39,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:39,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:39,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:39,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871199119] [2022-10-17 11:02:39,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871199119] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:39,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:39,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:02:39,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682906259] [2022-10-17 11:02:39,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:39,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:02:39,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:39,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:02:39,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:02:39,657 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 588 out of 903 [2022-10-17 11:02:39,659 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) [2022-10-17 11:02:39,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:39,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 588 of 903 [2022-10-17 11:02:39,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand