./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/peterson.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_bde88edb-12a7-445b-bb8b-a41e03c0874b/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde88edb-12a7-445b-bb8b-a41e03c0874b/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_bde88edb-12a7-445b-bb8b-a41e03c0874b/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde88edb-12a7-445b-bb8b-a41e03c0874b/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/peterson.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde88edb-12a7-445b-bb8b-a41e03c0874b/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_bde88edb-12a7-445b-bb8b-a41e03c0874b/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 ee3d1a41e169e13d6fb9bc974b1d8f7c8de5421cb2dfbc7e3d9a400662188398 --- 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 11:09:17,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:09:17,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:09:17,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:09:17,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:09:17,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:09:17,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:09:17,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:09:17,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:09:17,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:09:17,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:09:17,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:09:17,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:09:17,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:09:17,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:09:17,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:09:17,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:09:17,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:09:17,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:09:17,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:09:17,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:09:17,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:09:17,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:09:17,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:09:17,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:09:17,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:09:17,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:09:17,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:09:17,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:09:17,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:09:17,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:09:17,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:09:17,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:09:17,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:09:17,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:09:17,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:09:17,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:09:17,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:09:17,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:09:17,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:09:17,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:09:17,831 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde88edb-12a7-445b-bb8b-a41e03c0874b/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 11:09:17,866 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:09:17,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:09:17,868 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:09:17,868 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:09:17,869 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:09:17,869 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:09:17,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:09:17,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:09:17,871 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:09:17,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:09:17,872 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 11:09:17,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:09:17,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 11:09:17,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:09:17,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:09:17,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:09:17,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:09:17,874 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 11:09:17,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:09:17,875 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:09:17,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:09:17,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:09:17,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:09:17,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:09:17,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:09:17,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:09:17,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:09:17,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:09:17,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:09:17,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:09:17,877 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:09:17,877 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:09:17,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:09:17,878 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_bde88edb-12a7-445b-bb8b-a41e03c0874b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde88edb-12a7-445b-bb8b-a41e03c0874b/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee3d1a41e169e13d6fb9bc974b1d8f7c8de5421cb2dfbc7e3d9a400662188398 [2022-10-17 11:09:18,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:09:18,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:09:18,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:09:18,325 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:09:18,326 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:09:18,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde88edb-12a7-445b-bb8b-a41e03c0874b/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-atomic/peterson.i [2022-10-17 11:09:18,415 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde88edb-12a7-445b-bb8b-a41e03c0874b/bin/uautomizer-J5u9QxTXDZ/data/b6c42eba3/48900f1d7a084e9fae45b3ff6f3f8584/FLAG445bdfda3 [2022-10-17 11:09:19,030 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:09:19,031 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde88edb-12a7-445b-bb8b-a41e03c0874b/sv-benchmarks/c/pthread-atomic/peterson.i [2022-10-17 11:09:19,059 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde88edb-12a7-445b-bb8b-a41e03c0874b/bin/uautomizer-J5u9QxTXDZ/data/b6c42eba3/48900f1d7a084e9fae45b3ff6f3f8584/FLAG445bdfda3 [2022-10-17 11:09:19,324 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde88edb-12a7-445b-bb8b-a41e03c0874b/bin/uautomizer-J5u9QxTXDZ/data/b6c42eba3/48900f1d7a084e9fae45b3ff6f3f8584 [2022-10-17 11:09:19,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:09:19,328 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:09:19,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:09:19,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:09:19,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:09:19,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:09:19" (1/1) ... [2022-10-17 11:09:19,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77361200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:19, skipping insertion in model container [2022-10-17 11:09:19,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:09:19" (1/1) ... [2022-10-17 11:09:19,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:09:19,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:09:19,656 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-10-17 11:09:19,829 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_bde88edb-12a7-445b-bb8b-a41e03c0874b/sv-benchmarks/c/pthread-atomic/peterson.i[30997,31010] [2022-10-17 11:09:19,837 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_bde88edb-12a7-445b-bb8b-a41e03c0874b/sv-benchmarks/c/pthread-atomic/peterson.i[31682,31695] [2022-10-17 11:09:19,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:09:19,855 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:09:19,874 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-10-17 11:09:19,900 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_bde88edb-12a7-445b-bb8b-a41e03c0874b/sv-benchmarks/c/pthread-atomic/peterson.i[30997,31010] [2022-10-17 11:09:19,904 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_bde88edb-12a7-445b-bb8b-a41e03c0874b/sv-benchmarks/c/pthread-atomic/peterson.i[31682,31695] [2022-10-17 11:09:19,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:09:19,979 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:09:19,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:19 WrapperNode [2022-10-17 11:09:19,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:09:19,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:09:19,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:09:19,982 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:09:19,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:19" (1/1) ... [2022-10-17 11:09:20,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:19" (1/1) ... [2022-10-17 11:09:20,061 INFO L138 Inliner]: procedures = 171, calls = 47, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2022-10-17 11:09:20,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:09:20,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:09:20,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:09:20,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:09:20,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:19" (1/1) ... [2022-10-17 11:09:20,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:19" (1/1) ... [2022-10-17 11:09:20,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:19" (1/1) ... [2022-10-17 11:09:20,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:19" (1/1) ... [2022-10-17 11:09:20,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:19" (1/1) ... [2022-10-17 11:09:20,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:19" (1/1) ... [2022-10-17 11:09:20,109 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:19" (1/1) ... [2022-10-17 11:09:20,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:19" (1/1) ... [2022-10-17 11:09:20,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:09:20,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:09:20,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:09:20,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:09:20,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:19" (1/1) ... [2022-10-17 11:09:20,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:09:20,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde88edb-12a7-445b-bb8b-a41e03c0874b/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:09:20,161 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde88edb-12a7-445b-bb8b-a41e03c0874b/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:09:20,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde88edb-12a7-445b-bb8b-a41e03c0874b/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:09:20,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 11:09:20,216 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-10-17 11:09:20,217 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-10-17 11:09:20,217 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-10-17 11:09:20,217 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-10-17 11:09:20,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 11:09:20,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 11:09:20,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:09:20,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 11:09:20,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 11:09:20,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 11:09:20,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 11:09:20,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:09:20,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:09:20,221 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 11:09:20,361 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:09:20,374 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:09:20,689 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:09:20,702 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:09:20,702 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 11:09:20,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:09:20 BoogieIcfgContainer [2022-10-17 11:09:20,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:09:20,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:09:20,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:09:20,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:09:20,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:09:19" (1/3) ... [2022-10-17 11:09:20,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4261174a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:09:20, skipping insertion in model container [2022-10-17 11:09:20,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:19" (2/3) ... [2022-10-17 11:09:20,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4261174a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:09:20, skipping insertion in model container [2022-10-17 11:09:20,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:09:20" (3/3) ... [2022-10-17 11:09:20,718 INFO L112 eAbstractionObserver]: Analyzing ICFG peterson.i [2022-10-17 11:09:20,728 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 11:09:20,741 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:09:20,741 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 11:09:20,741 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 11:09:20,847 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-10-17 11:09:20,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 82 transitions, 180 flow [2022-10-17 11:09:21,013 INFO L130 PetriNetUnfolder]: 6/80 cut-off events. [2022-10-17 11:09:21,014 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 11:09:21,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 80 events. 6/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-10-17 11:09:21,019 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 82 transitions, 180 flow [2022-10-17 11:09:21,027 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 70 transitions, 149 flow [2022-10-17 11:09:21,051 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:09:21,059 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;@89a6ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:09:21,059 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-10-17 11:09:21,089 INFO L130 PetriNetUnfolder]: 3/47 cut-off events. [2022-10-17 11:09:21,089 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 11:09:21,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:09:21,090 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, 1, 1, 1, 1, 1] [2022-10-17 11:09:21,091 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 11:09:21,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:09:21,099 INFO L85 PathProgramCache]: Analyzing trace with hash -319858443, now seen corresponding path program 1 times [2022-10-17 11:09:21,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:09:21,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030410630] [2022-10-17 11:09:21,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:21,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:09:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:21,408 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 11:09:21,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:09:21,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030410630] [2022-10-17 11:09:21,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030410630] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:09:21,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:09:21,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 11:09:21,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263396885] [2022-10-17 11:09:21,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:09:21,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 11:09:21,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:09:21,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 11:09:21,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 11:09:21,485 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 82 [2022-10-17 11:09:21,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 149 flow. Second operand has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 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 11:09:21,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:09:21,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 82 [2022-10-17 11:09:21,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:09:21,526 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2022-10-17 11:09:21,526 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-10-17 11:09:21,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 66 events. 2/66 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 7/69 useless extension candidates. Maximal degree in co-relation 46. Up to 4 conditions per place. [2022-10-17 11:09:21,529 INFO L137 encePairwiseOnDemand]: 78/82 looper letters, 3 selfloop transitions, 0 changer transitions 0/66 dead transitions. [2022-10-17 11:09:21,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 147 flow [2022-10-17 11:09:21,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 11:09:21,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-10-17 11:09:21,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 155 transitions. [2022-10-17 11:09:21,545 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9451219512195121 [2022-10-17 11:09:21,546 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 155 transitions. [2022-10-17 11:09:21,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 155 transitions. [2022-10-17 11:09:21,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:09:21,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 155 transitions. [2022-10-17 11:09:21,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 11:09:21,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 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 11:09:21,561 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 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 11:09:21,564 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 149 flow. Second operand 2 states and 155 transitions. [2022-10-17 11:09:21,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 147 flow [2022-10-17 11:09:21,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 66 transitions, 142 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-10-17 11:09:21,573 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 136 flow [2022-10-17 11:09:21,576 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=136, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2022-10-17 11:09:21,580 INFO L287 CegarLoopForPetriNet]: 71 programPoint places, -2 predicate places. [2022-10-17 11:09:21,580 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 136 flow [2022-10-17 11:09:21,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 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 11:09:21,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:09:21,581 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] [2022-10-17 11:09:21,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 11:09:21,582 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 11:09:21,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:09:21,583 INFO L85 PathProgramCache]: Analyzing trace with hash -319828652, now seen corresponding path program 1 times [2022-10-17 11:09:21,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:09:21,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363342428] [2022-10-17 11:09:21,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:21,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:09:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:21,793 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 11:09:21,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:09:21,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363342428] [2022-10-17 11:09:21,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363342428] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:09:21,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:09:21,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:09:21,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333515122] [2022-10-17 11:09:21,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:09:21,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:09:21,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:09:21,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:09:21,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:09:21,803 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 82 [2022-10-17 11:09:21,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 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 11:09:21,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:09:21,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 82 [2022-10-17 11:09:21,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:09:21,894 INFO L130 PetriNetUnfolder]: 16/145 cut-off events. [2022-10-17 11:09:21,894 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-10-17 11:09:21,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 145 events. 16/145 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 475 event pairs, 4 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 197. Up to 24 conditions per place. [2022-10-17 11:09:21,897 INFO L137 encePairwiseOnDemand]: 77/82 looper letters, 11 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2022-10-17 11:09:21,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 173 flow [2022-10-17 11:09:21,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:09:21,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 11:09:21,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2022-10-17 11:09:21,907 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8821138211382114 [2022-10-17 11:09:21,908 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 217 transitions. [2022-10-17 11:09:21,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 217 transitions. [2022-10-17 11:09:21,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:09:21,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 217 transitions. [2022-10-17 11:09:21,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 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 11:09:21,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 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 11:09:21,923 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 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 11:09:21,923 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 136 flow. Second operand 3 states and 217 transitions. [2022-10-17 11:09:21,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 173 flow [2022-10-17 11:09:21,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 70 transitions, 173 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 11:09:21,929 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 156 flow [2022-10-17 11:09:21,931 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2022-10-17 11:09:21,932 INFO L287 CegarLoopForPetriNet]: 71 programPoint places, 2 predicate places. [2022-10-17 11:09:21,933 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 156 flow [2022-10-17 11:09:21,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 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 11:09:21,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:09:21,935 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] [2022-10-17 11:09:21,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 11:09:21,937 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 11:09:21,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:09:21,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1668992913, now seen corresponding path program 1 times [2022-10-17 11:09:21,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:09:21,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445321424] [2022-10-17 11:09:21,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:21,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:09:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:22,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:09:22,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:09:22,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445321424] [2022-10-17 11:09:22,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445321424] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:09:22,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:09:22,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:09:22,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376799634] [2022-10-17 11:09:22,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:09:22,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:09:22,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:09:22,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:09:22,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:09:22,196 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 82 [2022-10-17 11:09:22,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 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 11:09:22,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:09:22,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 82 [2022-10-17 11:09:22,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:09:22,316 INFO L130 PetriNetUnfolder]: 10/127 cut-off events. [2022-10-17 11:09:22,316 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-10-17 11:09:22,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 127 events. 10/127 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 367 event pairs, 5 based on Foata normal form. 7/129 useless extension candidates. Maximal degree in co-relation 191. Up to 22 conditions per place. [2022-10-17 11:09:22,319 INFO L137 encePairwiseOnDemand]: 78/82 looper letters, 9 selfloop transitions, 2 changer transitions 1/68 dead transitions. [2022-10-17 11:09:22,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 68 transitions, 183 flow [2022-10-17 11:09:22,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:09:22,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 11:09:22,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2022-10-17 11:09:22,322 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8739837398373984 [2022-10-17 11:09:22,323 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 215 transitions. [2022-10-17 11:09:22,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 215 transitions. [2022-10-17 11:09:22,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:09:22,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 215 transitions. [2022-10-17 11:09:22,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 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 11:09:22,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 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 11:09:22,327 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 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 11:09:22,328 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 156 flow. Second operand 3 states and 215 transitions. [2022-10-17 11:09:22,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 68 transitions, 183 flow [2022-10-17 11:09:22,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 68 transitions, 177 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 11:09:22,332 INFO L231 Difference]: Finished difference. Result has 74 places, 67 transitions, 160 flow [2022-10-17 11:09:22,333 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=74, PETRI_TRANSITIONS=67} [2022-10-17 11:09:22,334 INFO L287 CegarLoopForPetriNet]: 71 programPoint places, 3 predicate places. [2022-10-17 11:09:22,334 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 67 transitions, 160 flow [2022-10-17 11:09:22,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 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 11:09:22,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:09:22,335 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, 1, 1, 1, 1, 1] [2022-10-17 11:09:22,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 11:09:22,336 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 11:09:22,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:09:22,337 INFO L85 PathProgramCache]: Analyzing trace with hash -814098879, now seen corresponding path program 1 times [2022-10-17 11:09:22,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:09:22,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915820382] [2022-10-17 11:09:22,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:22,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:09:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:22,609 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 11:09:22,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:09:22,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915820382] [2022-10-17 11:09:22,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915820382] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:09:22,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:09:22,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 11:09:22,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672561678] [2022-10-17 11:09:22,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:09:22,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 11:09:22,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:09:22,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 11:09:22,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:09:22,623 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 82 [2022-10-17 11:09:22,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 67 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 0 states have call successors, (0), 0 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 11:09:22,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:09:22,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 82 [2022-10-17 11:09:22,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:09:22,941 INFO L130 PetriNetUnfolder]: 83/326 cut-off events. [2022-10-17 11:09:22,942 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-10-17 11:09:22,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 555 conditions, 326 events. 83/326 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1526 event pairs, 9 based on Foata normal form. 0/307 useless extension candidates. Maximal degree in co-relation 549. Up to 48 conditions per place. [2022-10-17 11:09:22,946 INFO L137 encePairwiseOnDemand]: 72/82 looper letters, 26 selfloop transitions, 13 changer transitions 19/108 dead transitions. [2022-10-17 11:09:22,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 108 transitions, 363 flow [2022-10-17 11:09:22,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 11:09:22,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 11:09:22,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 662 transitions. [2022-10-17 11:09:22,951 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8073170731707318 [2022-10-17 11:09:22,951 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 662 transitions. [2022-10-17 11:09:22,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 662 transitions. [2022-10-17 11:09:22,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:09:22,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 662 transitions. [2022-10-17 11:09:22,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 66.2) internal successors, (662), 10 states have internal predecessors, (662), 0 states have call successors, (0), 0 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 11:09:22,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 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 11:09:22,961 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 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 11:09:22,962 INFO L175 Difference]: Start difference. First operand has 74 places, 67 transitions, 160 flow. Second operand 10 states and 662 transitions. [2022-10-17 11:09:22,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 108 transitions, 363 flow [2022-10-17 11:09:22,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 108 transitions, 361 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 11:09:22,968 INFO L231 Difference]: Finished difference. Result has 91 places, 79 transitions, 266 flow [2022-10-17 11:09:22,968 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=266, PETRI_PLACES=91, PETRI_TRANSITIONS=79} [2022-10-17 11:09:22,970 INFO L287 CegarLoopForPetriNet]: 71 programPoint places, 20 predicate places. [2022-10-17 11:09:22,970 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 79 transitions, 266 flow [2022-10-17 11:09:22,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 0 states have call successors, (0), 0 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 11:09:22,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:09:22,971 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, 1, 1, 1, 1, 1] [2022-10-17 11:09:22,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 11:09:22,972 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 11:09:22,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:09:22,972 INFO L85 PathProgramCache]: Analyzing trace with hash 108686721, now seen corresponding path program 2 times [2022-10-17 11:09:22,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:09:22,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664910395] [2022-10-17 11:09:22,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:22,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:09:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:23,103 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 11:09:23,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:09:23,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664910395] [2022-10-17 11:09:23,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664910395] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:09:23,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:09:23,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 11:09:23,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005251600] [2022-10-17 11:09:23,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:09:23,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 11:09:23,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:09:23,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 11:09:23,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:09:23,110 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 82 [2022-10-17 11:09:23,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 79 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 0 states have call successors, (0), 0 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 11:09:23,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:09:23,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 82 [2022-10-17 11:09:23,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:09:23,361 INFO L130 PetriNetUnfolder]: 93/305 cut-off events. [2022-10-17 11:09:23,362 INFO L131 PetriNetUnfolder]: For 212/234 co-relation queries the response was YES. [2022-10-17 11:09:23,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 789 conditions, 305 events. 93/305 cut-off events. For 212/234 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1312 event pairs, 8 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 775. Up to 55 conditions per place. [2022-10-17 11:09:23,365 INFO L137 encePairwiseOnDemand]: 72/82 looper letters, 0 selfloop transitions, 0 changer transitions 114/114 dead transitions. [2022-10-17 11:09:23,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 114 transitions, 523 flow [2022-10-17 11:09:23,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 11:09:23,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 11:09:23,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 656 transitions. [2022-10-17 11:09:23,368 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8 [2022-10-17 11:09:23,368 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 656 transitions. [2022-10-17 11:09:23,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 656 transitions. [2022-10-17 11:09:23,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:09:23,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 656 transitions. [2022-10-17 11:09:23,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 65.6) internal successors, (656), 10 states have internal predecessors, (656), 0 states have call successors, (0), 0 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 11:09:23,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 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 11:09:23,376 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 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 11:09:23,376 INFO L175 Difference]: Start difference. First operand has 91 places, 79 transitions, 266 flow. Second operand 10 states and 656 transitions. [2022-10-17 11:09:23,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 114 transitions, 523 flow [2022-10-17 11:09:23,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 114 transitions, 493 flow, removed 14 selfloop flow, removed 3 redundant places. [2022-10-17 11:09:23,384 INFO L231 Difference]: Finished difference. Result has 91 places, 0 transitions, 0 flow [2022-10-17 11:09:23,384 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=91, PETRI_TRANSITIONS=0} [2022-10-17 11:09:23,385 INFO L287 CegarLoopForPetriNet]: 71 programPoint places, 20 predicate places. [2022-10-17 11:09:23,385 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 0 transitions, 0 flow [2022-10-17 11:09:23,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 0 states have call successors, (0), 0 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 11:09:23,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-10-17 11:09:23,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-10-17 11:09:23,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-10-17 11:09:23,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-10-17 11:09:23,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-10-17 11:09:23,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-10-17 11:09:23,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 11:09:23,391 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-10-17 11:09:23,397 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-10-17 11:09:23,397 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 11:09:23,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 11:09:23 BasicIcfg [2022-10-17 11:09:23,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 11:09:23,404 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 11:09:23,404 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 11:09:23,405 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 11:09:23,405 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:09:20" (3/4) ... [2022-10-17 11:09:23,408 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-10-17 11:09:23,415 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2022-10-17 11:09:23,415 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2022-10-17 11:09:23,419 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-10-17 11:09:23,420 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-10-17 11:09:23,420 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-10-17 11:09:23,420 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-10-17 11:09:23,455 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde88edb-12a7-445b-bb8b-a41e03c0874b/bin/uautomizer-J5u9QxTXDZ/witness.graphml [2022-10-17 11:09:23,455 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 11:09:23,456 INFO L158 Benchmark]: Toolchain (without parser) took 4127.36ms. Allocated memory was 86.0MB in the beginning and 119.5MB in the end (delta: 33.6MB). Free memory was 51.7MB in the beginning and 69.9MB in the end (delta: -18.2MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2022-10-17 11:09:23,456 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 86.0MB. Free memory is still 61.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 11:09:23,457 INFO L158 Benchmark]: CACSL2BoogieTranslator took 646.87ms. Allocated memory is still 86.0MB. Free memory was 51.5MB in the beginning and 50.7MB in the end (delta: 767.8kB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2022-10-17 11:09:23,457 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.93ms. Allocated memory is still 86.0MB. Free memory was 50.7MB in the beginning and 48.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 11:09:23,457 INFO L158 Benchmark]: Boogie Preprocessor took 59.49ms. Allocated memory is still 86.0MB. Free memory was 48.8MB in the beginning and 47.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 11:09:23,458 INFO L158 Benchmark]: RCFGBuilder took 580.99ms. Allocated memory is still 86.0MB. Free memory was 47.1MB in the beginning and 34.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-10-17 11:09:23,458 INFO L158 Benchmark]: TraceAbstraction took 2696.40ms. Allocated memory was 86.0MB in the beginning and 119.5MB in the end (delta: 33.6MB). Free memory was 34.1MB in the beginning and 72.0MB in the end (delta: -37.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 11:09:23,459 INFO L158 Benchmark]: Witness Printer took 50.71ms. Allocated memory is still 119.5MB. Free memory was 72.0MB in the beginning and 69.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 11:09:23,461 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 86.0MB. Free memory is still 61.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 646.87ms. Allocated memory is still 86.0MB. Free memory was 51.5MB in the beginning and 50.7MB in the end (delta: 767.8kB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.93ms. Allocated memory is still 86.0MB. Free memory was 50.7MB in the beginning and 48.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.49ms. Allocated memory is still 86.0MB. Free memory was 48.8MB in the beginning and 47.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 580.99ms. Allocated memory is still 86.0MB. Free memory was 47.1MB in the beginning and 34.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2696.40ms. Allocated memory was 86.0MB in the beginning and 119.5MB in the end (delta: 33.6MB). Free memory was 34.1MB in the beginning and 72.0MB in the end (delta: -37.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 50.71ms. Allocated memory is still 119.5MB. Free memory was 72.0MB in the beginning and 69.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 753]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 725]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 111 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.5s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 71 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 71 mSDsluCounter, 114 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 86 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 248 IncrementalHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 61 mSDtfsCounter, 248 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=266occurred in iteration=4, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 182 ConstructedInterpolants, 0 QuantifiedInterpolants, 262 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-10-17 11:09:23,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bde88edb-12a7-445b-bb8b-a41e03c0874b/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE