./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/lamport.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d80c2b-c70f-46a3-be8d-421a602b26b4/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d80c2b-c70f-46a3-be8d-421a602b26b4/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d80c2b-c70f-46a3-be8d-421a602b26b4/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d80c2b-c70f-46a3-be8d-421a602b26b4/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/lamport.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d80c2b-c70f-46a3-be8d-421a602b26b4/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d80c2b-c70f-46a3-be8d-421a602b26b4/bin/uautomizer-QkZJyEgLgS --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 c35b909c90b92e30d40b0275e3d226db26dbebaf39dc73a31d7e72eee871d214 --- 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-4e7fbc6 [2022-11-23 02:24:55,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:24:55,821 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:24:55,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:24:55,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:24:55,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:24:55,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:24:55,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:24:55,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:24:55,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:24:55,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:24:55,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:24:55,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:24:55,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:24:55,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:24:55,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:24:55,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:24:55,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:24:55,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:24:55,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:24:55,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:24:55,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:24:55,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:24:55,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:24:55,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:24:55,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:24:55,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:24:55,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:24:55,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:24:55,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:24:55,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:24:55,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:24:55,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:24:55,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:24:55,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:24:55,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:24:55,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:24:55,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:24:55,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:24:55,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:24:55,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:24:55,905 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d80c2b-c70f-46a3-be8d-421a602b26b4/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 02:24:55,943 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:24:55,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:24:55,944 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:24:55,944 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:24:55,945 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:24:55,945 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:24:55,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:24:55,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:24:55,946 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:24:55,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:24:55,947 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:24:55,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:24:55,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:24:55,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:24:55,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:24:55,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:24:55,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:24:55,948 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:24:55,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:24:55,948 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:24:55,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:24:55,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:24:55,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:24:55,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:24:55,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:24:55,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:24:55,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:24:55,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:24:55,950 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:24:55,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:24:55,950 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:24:55,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:24:55,951 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:24:55,951 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:24:55,951 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d80c2b-c70f-46a3-be8d-421a602b26b4/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d80c2b-c70f-46a3-be8d-421a602b26b4/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c35b909c90b92e30d40b0275e3d226db26dbebaf39dc73a31d7e72eee871d214 [2022-11-23 02:24:56,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:24:56,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:24:56,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:24:56,222 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:24:56,223 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:24:56,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d80c2b-c70f-46a3-be8d-421a602b26b4/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/pthread-atomic/lamport.i [2022-11-23 02:24:59,262 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:24:59,571 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:24:59,572 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d80c2b-c70f-46a3-be8d-421a602b26b4/sv-benchmarks/c/pthread-atomic/lamport.i [2022-11-23 02:24:59,585 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d80c2b-c70f-46a3-be8d-421a602b26b4/bin/uautomizer-QkZJyEgLgS/data/84bf33f56/7a32bd18dc44467a8c8b0eb3de7fe15d/FLAG4fa3a2ea7 [2022-11-23 02:24:59,599 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d80c2b-c70f-46a3-be8d-421a602b26b4/bin/uautomizer-QkZJyEgLgS/data/84bf33f56/7a32bd18dc44467a8c8b0eb3de7fe15d [2022-11-23 02:24:59,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:24:59,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:24:59,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:24:59,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:24:59,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:24:59,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:24:59" (1/1) ... [2022-11-23 02:24:59,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@271a0c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:24:59, skipping insertion in model container [2022-11-23 02:24:59,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:24:59" (1/1) ... [2022-11-23 02:24:59,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:24:59,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:24:59,838 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 02:25:00,048 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d80c2b-c70f-46a3-be8d-421a602b26b4/sv-benchmarks/c/pthread-atomic/lamport.i[32156,32169] [2022-11-23 02:25:00,058 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d80c2b-c70f-46a3-be8d-421a602b26b4/sv-benchmarks/c/pthread-atomic/lamport.i[34083,34096] [2022-11-23 02:25:00,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:25:00,084 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:25:00,101 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 02:25:00,121 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d80c2b-c70f-46a3-be8d-421a602b26b4/sv-benchmarks/c/pthread-atomic/lamport.i[32156,32169] [2022-11-23 02:25:00,125 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d80c2b-c70f-46a3-be8d-421a602b26b4/sv-benchmarks/c/pthread-atomic/lamport.i[34083,34096] [2022-11-23 02:25:00,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:25:00,176 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:25:00,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:00 WrapperNode [2022-11-23 02:25:00,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:25:00,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:25:00,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:25:00,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:25:00,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:00" (1/1) ... [2022-11-23 02:25:00,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:00" (1/1) ... [2022-11-23 02:25:00,240 INFO L138 Inliner]: procedures = 171, calls = 83, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2022-11-23 02:25:00,241 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:25:00,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:25:00,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:25:00,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:25:00,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:00" (1/1) ... [2022-11-23 02:25:00,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:00" (1/1) ... [2022-11-23 02:25:00,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:00" (1/1) ... [2022-11-23 02:25:00,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:00" (1/1) ... [2022-11-23 02:25:00,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:00" (1/1) ... [2022-11-23 02:25:00,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:00" (1/1) ... [2022-11-23 02:25:00,267 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:00" (1/1) ... [2022-11-23 02:25:00,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:00" (1/1) ... [2022-11-23 02:25:00,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:25:00,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:25:00,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:25:00,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:25:00,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:00" (1/1) ... [2022-11-23 02:25:00,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:25:00,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d80c2b-c70f-46a3-be8d-421a602b26b4/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:25:00,306 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d80c2b-c70f-46a3-be8d-421a602b26b4/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:25:00,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d80c2b-c70f-46a3-be8d-421a602b26b4/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:25:00,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 02:25:00,359 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-11-23 02:25:00,359 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-11-23 02:25:00,359 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-23 02:25:00,359 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-23 02:25:00,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 02:25:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 02:25:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:25:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:25:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:25:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:25:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 02:25:00,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:25:00,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:25:00,362 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 02:25:00,550 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:25:00,552 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:25:00,768 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:25:00,776 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:25:00,777 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-23 02:25:00,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:25:00 BoogieIcfgContainer [2022-11-23 02:25:00,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:25:00,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:25:00,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:25:00,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:25:00,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:24:59" (1/3) ... [2022-11-23 02:25:00,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d78186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:25:00, skipping insertion in model container [2022-11-23 02:25:00,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:00" (2/3) ... [2022-11-23 02:25:00,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d78186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:25:00, skipping insertion in model container [2022-11-23 02:25:00,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:25:00" (3/3) ... [2022-11-23 02:25:00,789 INFO L112 eAbstractionObserver]: Analyzing ICFG lamport.i [2022-11-23 02:25:00,805 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 02:25:00,818 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:25:00,819 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 02:25:00,819 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 02:25:00,944 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-23 02:25:01,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 133 transitions, 282 flow [2022-11-23 02:25:01,095 INFO L130 PetriNetUnfolder]: 24/131 cut-off events. [2022-11-23 02:25:01,095 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 02:25:01,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 131 events. 24/131 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 253 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 97. Up to 5 conditions per place. [2022-11-23 02:25:01,102 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 133 transitions, 282 flow [2022-11-23 02:25:01,109 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 121 transitions, 251 flow [2022-11-23 02:25:01,112 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:25:01,145 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 121 transitions, 251 flow [2022-11-23 02:25:01,148 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 121 transitions, 251 flow [2022-11-23 02:25:01,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 121 transitions, 251 flow [2022-11-23 02:25:01,208 INFO L130 PetriNetUnfolder]: 24/121 cut-off events. [2022-11-23 02:25:01,208 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 02:25:01,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 121 events. 24/121 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 250 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 97. Up to 5 conditions per place. [2022-11-23 02:25:01,217 INFO L119 LiptonReduction]: Number of co-enabled transitions 4988 [2022-11-23 02:25:03,649 INFO L134 LiptonReduction]: Checked pairs total: 13083 [2022-11-23 02:25:03,650 INFO L136 LiptonReduction]: Total number of compositions: 78 [2022-11-23 02:25:03,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:25:03,674 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;@7f9a85cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:25:03,675 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-23 02:25:03,678 INFO L130 PetriNetUnfolder]: 1/7 cut-off events. [2022-11-23 02:25:03,678 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:25:03,679 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:25:03,679 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-23 02:25:03,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-23 02:25:03,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:25:03,685 INFO L85 PathProgramCache]: Analyzing trace with hash 17251951, now seen corresponding path program 1 times [2022-11-23 02:25:03,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:25:03,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698861798] [2022-11-23 02:25:03,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:25:03,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:25:03,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:25:03,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:25:03,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:25:03,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698861798] [2022-11-23 02:25:03,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698861798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:25:03,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:25:03,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:25:03,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902206464] [2022-11-23 02:25:03,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:25:03,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 02:25:03,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:25:03,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 02:25:03,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 02:25:03,894 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 211 [2022-11-23 02:25:03,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 61 transitions, 131 flow. Second operand has 2 states, 2 states have (on average 119.0) internal successors, (238), 2 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:03,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:25:03,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 211 [2022-11-23 02:25:03,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:25:04,123 INFO L130 PetriNetUnfolder]: 865/1417 cut-off events. [2022-11-23 02:25:04,123 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-23 02:25:04,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2697 conditions, 1417 events. 865/1417 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6785 event pairs, 456 based on Foata normal form. 0/1004 useless extension candidates. Maximal degree in co-relation 2542. Up to 1238 conditions per place. [2022-11-23 02:25:04,135 INFO L137 encePairwiseOnDemand]: 206/211 looper letters, 40 selfloop transitions, 0 changer transitions 0/56 dead transitions. [2022-11-23 02:25:04,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 56 transitions, 201 flow [2022-11-23 02:25:04,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 02:25:04,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-23 02:25:04,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 279 transitions. [2022-11-23 02:25:04,149 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6611374407582938 [2022-11-23 02:25:04,150 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 279 transitions. [2022-11-23 02:25:04,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 279 transitions. [2022-11-23 02:25:04,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:25:04,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 279 transitions. [2022-11-23 02:25:04,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 139.5) internal successors, (279), 2 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:04,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:04,163 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:04,165 INFO L175 Difference]: Start difference. First operand has 51 places, 61 transitions, 131 flow. Second operand 2 states and 279 transitions. [2022-11-23 02:25:04,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 56 transitions, 201 flow [2022-11-23 02:25:04,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 56 transitions, 196 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-23 02:25:04,171 INFO L231 Difference]: Finished difference. Result has 49 places, 56 transitions, 116 flow [2022-11-23 02:25:04,173 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=116, PETRI_PLACES=49, PETRI_TRANSITIONS=56} [2022-11-23 02:25:04,176 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2022-11-23 02:25:04,177 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 56 transitions, 116 flow [2022-11-23 02:25:04,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 119.0) internal successors, (238), 2 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:04,177 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:25:04,177 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:25:04,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:25:04,178 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-23 02:25:04,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:25:04,179 INFO L85 PathProgramCache]: Analyzing trace with hash -523997764, now seen corresponding path program 1 times [2022-11-23 02:25:04,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:25:04,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406354951] [2022-11-23 02:25:04,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:25:04,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:25:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:25:04,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:25:04,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:25:04,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406354951] [2022-11-23 02:25:04,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406354951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:25:04,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:25:04,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:25:04,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363604817] [2022-11-23 02:25:04,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:25:04,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:25:04,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:25:04,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:25:04,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:25:04,346 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 211 [2022-11-23 02:25:04,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 56 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:04,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:25:04,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 211 [2022-11-23 02:25:04,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:25:04,614 INFO L130 PetriNetUnfolder]: 909/1503 cut-off events. [2022-11-23 02:25:04,615 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-23 02:25:04,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2854 conditions, 1503 events. 909/1503 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7317 event pairs, 336 based on Foata normal form. 0/1088 useless extension candidates. Maximal degree in co-relation 2851. Up to 967 conditions per place. [2022-11-23 02:25:04,625 INFO L137 encePairwiseOnDemand]: 204/211 looper letters, 56 selfloop transitions, 5 changer transitions 1/77 dead transitions. [2022-11-23 02:25:04,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 77 transitions, 283 flow [2022-11-23 02:25:04,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:25:04,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:25:04,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2022-11-23 02:25:04,631 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.631911532385466 [2022-11-23 02:25:04,632 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2022-11-23 02:25:04,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2022-11-23 02:25:04,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:25:04,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2022-11-23 02:25:04,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:04,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:04,640 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:04,640 INFO L175 Difference]: Start difference. First operand has 49 places, 56 transitions, 116 flow. Second operand 3 states and 400 transitions. [2022-11-23 02:25:04,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 77 transitions, 283 flow [2022-11-23 02:25:04,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 77 transitions, 283 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:25:04,643 INFO L231 Difference]: Finished difference. Result has 53 places, 58 transitions, 148 flow [2022-11-23 02:25:04,644 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=53, PETRI_TRANSITIONS=58} [2022-11-23 02:25:04,647 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2022-11-23 02:25:04,648 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 58 transitions, 148 flow [2022-11-23 02:25:04,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:04,648 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:25:04,649 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:25:04,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:25:04,649 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-23 02:25:04,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:25:04,662 INFO L85 PathProgramCache]: Analyzing trace with hash 817631843, now seen corresponding path program 1 times [2022-11-23 02:25:04,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:25:04,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709656876] [2022-11-23 02:25:04,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:25:04,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:25:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:25:04,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:25:04,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:25:04,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709656876] [2022-11-23 02:25:04,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709656876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:25:04,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:25:04,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:25:04,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921404180] [2022-11-23 02:25:04,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:25:04,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:25:04,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:25:04,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:25:04,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:25:04,746 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 211 [2022-11-23 02:25:04,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 58 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:04,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:25:04,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 211 [2022-11-23 02:25:04,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:25:04,967 INFO L130 PetriNetUnfolder]: 796/1356 cut-off events. [2022-11-23 02:25:04,967 INFO L131 PetriNetUnfolder]: For 189/189 co-relation queries the response was YES. [2022-11-23 02:25:04,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2740 conditions, 1356 events. 796/1356 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6605 event pairs, 336 based on Foata normal form. 34/1093 useless extension candidates. Maximal degree in co-relation 2735. Up to 964 conditions per place. [2022-11-23 02:25:04,974 INFO L137 encePairwiseOnDemand]: 205/211 looper letters, 51 selfloop transitions, 4 changer transitions 4/75 dead transitions. [2022-11-23 02:25:04,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 75 transitions, 301 flow [2022-11-23 02:25:04,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:25:04,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:25:04,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 397 transitions. [2022-11-23 02:25:04,977 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.627172195892575 [2022-11-23 02:25:04,978 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 397 transitions. [2022-11-23 02:25:04,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 397 transitions. [2022-11-23 02:25:04,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:25:04,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 397 transitions. [2022-11-23 02:25:04,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:04,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:04,980 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:04,980 INFO L175 Difference]: Start difference. First operand has 53 places, 58 transitions, 148 flow. Second operand 3 states and 397 transitions. [2022-11-23 02:25:04,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 75 transitions, 301 flow [2022-11-23 02:25:04,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 75 transitions, 291 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:25:04,987 INFO L231 Difference]: Finished difference. Result has 54 places, 58 transitions, 154 flow [2022-11-23 02:25:04,987 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=54, PETRI_TRANSITIONS=58} [2022-11-23 02:25:04,989 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2022-11-23 02:25:04,989 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 58 transitions, 154 flow [2022-11-23 02:25:04,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:04,990 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:25:04,990 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:25:04,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 02:25:04,990 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-23 02:25:04,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:25:04,991 INFO L85 PathProgramCache]: Analyzing trace with hash 443786371, now seen corresponding path program 1 times [2022-11-23 02:25:04,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:25:04,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206895001] [2022-11-23 02:25:04,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:25:04,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:25:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:25:05,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:25:05,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:25:05,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206895001] [2022-11-23 02:25:05,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206895001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:25:05,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:25:05,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:25:05,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790515967] [2022-11-23 02:25:05,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:25:05,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:25:05,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:25:05,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:25:05,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:25:05,104 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 211 [2022-11-23 02:25:05,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 58 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:05,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:25:05,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 211 [2022-11-23 02:25:05,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:25:05,397 INFO L130 PetriNetUnfolder]: 1602/2671 cut-off events. [2022-11-23 02:25:05,397 INFO L131 PetriNetUnfolder]: For 637/637 co-relation queries the response was YES. [2022-11-23 02:25:05,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5503 conditions, 2671 events. 1602/2671 cut-off events. For 637/637 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 14203 event pairs, 419 based on Foata normal form. 0/2172 useless extension candidates. Maximal degree in co-relation 5497. Up to 1373 conditions per place. [2022-11-23 02:25:05,412 INFO L137 encePairwiseOnDemand]: 206/211 looper letters, 68 selfloop transitions, 4 changer transitions 11/96 dead transitions. [2022-11-23 02:25:05,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 96 transitions, 428 flow [2022-11-23 02:25:05,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:25:05,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:25:05,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 416 transitions. [2022-11-23 02:25:05,421 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6571879936808847 [2022-11-23 02:25:05,421 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 416 transitions. [2022-11-23 02:25:05,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 416 transitions. [2022-11-23 02:25:05,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:25:05,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 416 transitions. [2022-11-23 02:25:05,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:05,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:05,426 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:05,427 INFO L175 Difference]: Start difference. First operand has 54 places, 58 transitions, 154 flow. Second operand 3 states and 416 transitions. [2022-11-23 02:25:05,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 96 transitions, 428 flow [2022-11-23 02:25:05,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 96 transitions, 420 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:25:05,433 INFO L231 Difference]: Finished difference. Result has 57 places, 62 transitions, 184 flow [2022-11-23 02:25:05,434 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=57, PETRI_TRANSITIONS=62} [2022-11-23 02:25:05,435 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2022-11-23 02:25:05,435 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 62 transitions, 184 flow [2022-11-23 02:25:05,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:05,436 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:25:05,436 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:25:05,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 02:25:05,436 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-23 02:25:05,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:25:05,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1601089581, now seen corresponding path program 2 times [2022-11-23 02:25:05,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:25:05,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603668052] [2022-11-23 02:25:05,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:25:05,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:25:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:25:05,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:25:05,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:25:05,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603668052] [2022-11-23 02:25:05,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603668052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:25:05,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:25:05,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:25:05,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691061437] [2022-11-23 02:25:05,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:25:05,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:25:05,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:25:05,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:25:05,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:25:05,541 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 211 [2022-11-23 02:25:05,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 62 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:05,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:25:05,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 211 [2022-11-23 02:25:05,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:25:06,282 INFO L130 PetriNetUnfolder]: 3904/6515 cut-off events. [2022-11-23 02:25:06,282 INFO L131 PetriNetUnfolder]: For 1293/1309 co-relation queries the response was YES. [2022-11-23 02:25:06,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13853 conditions, 6515 events. 3904/6515 cut-off events. For 1293/1309 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 40145 event pairs, 860 based on Foata normal form. 122/5452 useless extension candidates. Maximal degree in co-relation 13846. Up to 2326 conditions per place. [2022-11-23 02:25:06,315 INFO L137 encePairwiseOnDemand]: 205/211 looper letters, 125 selfloop transitions, 8 changer transitions 3/152 dead transitions. [2022-11-23 02:25:06,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 152 transitions, 708 flow [2022-11-23 02:25:06,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:25:06,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 02:25:06,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 690 transitions. [2022-11-23 02:25:06,318 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6540284360189573 [2022-11-23 02:25:06,318 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 690 transitions. [2022-11-23 02:25:06,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 690 transitions. [2022-11-23 02:25:06,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:25:06,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 690 transitions. [2022-11-23 02:25:06,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:06,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:06,324 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:06,324 INFO L175 Difference]: Start difference. First operand has 57 places, 62 transitions, 184 flow. Second operand 5 states and 690 transitions. [2022-11-23 02:25:06,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 152 transitions, 708 flow [2022-11-23 02:25:06,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 152 transitions, 694 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:25:06,334 INFO L231 Difference]: Finished difference. Result has 63 places, 70 transitions, 248 flow [2022-11-23 02:25:06,334 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=248, PETRI_PLACES=63, PETRI_TRANSITIONS=70} [2022-11-23 02:25:06,335 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 12 predicate places. [2022-11-23 02:25:06,335 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 70 transitions, 248 flow [2022-11-23 02:25:06,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:06,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:25:06,336 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:25:06,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 02:25:06,336 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-23 02:25:06,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:25:06,337 INFO L85 PathProgramCache]: Analyzing trace with hash -995438355, now seen corresponding path program 3 times [2022-11-23 02:25:06,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:25:06,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221589563] [2022-11-23 02:25:06,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:25:06,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:25:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:25:06,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:25:06,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:25:06,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221589563] [2022-11-23 02:25:06,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221589563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:25:06,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:25:06,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:25:06,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145911523] [2022-11-23 02:25:06,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:25:06,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:25:06,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:25:06,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:25:06,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:25:06,415 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 211 [2022-11-23 02:25:06,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 70 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:06,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:25:06,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 211 [2022-11-23 02:25:06,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:25:07,305 INFO L130 PetriNetUnfolder]: 3945/6930 cut-off events. [2022-11-23 02:25:07,305 INFO L131 PetriNetUnfolder]: For 2843/2955 co-relation queries the response was YES. [2022-11-23 02:25:07,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16008 conditions, 6930 events. 3945/6930 cut-off events. For 2843/2955 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 45534 event pairs, 842 based on Foata normal form. 256/6275 useless extension candidates. Maximal degree in co-relation 15998. Up to 1926 conditions per place. [2022-11-23 02:25:07,350 INFO L137 encePairwiseOnDemand]: 205/211 looper letters, 118 selfloop transitions, 11 changer transitions 5/152 dead transitions. [2022-11-23 02:25:07,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 152 transitions, 787 flow [2022-11-23 02:25:07,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:25:07,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 02:25:07,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 681 transitions. [2022-11-23 02:25:07,352 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6454976303317536 [2022-11-23 02:25:07,353 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 681 transitions. [2022-11-23 02:25:07,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 681 transitions. [2022-11-23 02:25:07,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:25:07,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 681 transitions. [2022-11-23 02:25:07,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:07,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:07,358 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:07,358 INFO L175 Difference]: Start difference. First operand has 63 places, 70 transitions, 248 flow. Second operand 5 states and 681 transitions. [2022-11-23 02:25:07,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 152 transitions, 787 flow [2022-11-23 02:25:07,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 152 transitions, 787 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:25:07,367 INFO L231 Difference]: Finished difference. Result has 71 places, 77 transitions, 342 flow [2022-11-23 02:25:07,367 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=342, PETRI_PLACES=71, PETRI_TRANSITIONS=77} [2022-11-23 02:25:07,368 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 20 predicate places. [2022-11-23 02:25:07,368 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 77 transitions, 342 flow [2022-11-23 02:25:07,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:07,369 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:25:07,369 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:25:07,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 02:25:07,369 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-23 02:25:07,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:25:07,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1129693575, now seen corresponding path program 4 times [2022-11-23 02:25:07,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:25:07,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453300449] [2022-11-23 02:25:07,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:25:07,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:25:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:25:07,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:25:07,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:25:07,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453300449] [2022-11-23 02:25:07,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453300449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:25:07,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:25:07,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:25:07,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587783857] [2022-11-23 02:25:07,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:25:07,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:25:07,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:25:07,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:25:07,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:25:07,456 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 211 [2022-11-23 02:25:07,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 77 transitions, 342 flow. Second operand has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:07,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:25:07,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 211 [2022-11-23 02:25:07,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:25:08,439 INFO L130 PetriNetUnfolder]: 4032/7119 cut-off events. [2022-11-23 02:25:08,439 INFO L131 PetriNetUnfolder]: For 4316/4458 co-relation queries the response was YES. [2022-11-23 02:25:08,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16925 conditions, 7119 events. 4032/7119 cut-off events. For 4316/4458 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 46742 event pairs, 1565 based on Foata normal form. 312/6579 useless extension candidates. Maximal degree in co-relation 16911. Up to 4038 conditions per place. [2022-11-23 02:25:08,482 INFO L137 encePairwiseOnDemand]: 197/211 looper letters, 71 selfloop transitions, 5 changer transitions 45/143 dead transitions. [2022-11-23 02:25:08,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 143 transitions, 791 flow [2022-11-23 02:25:08,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:25:08,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 02:25:08,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 628 transitions. [2022-11-23 02:25:08,485 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.595260663507109 [2022-11-23 02:25:08,485 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 628 transitions. [2022-11-23 02:25:08,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 628 transitions. [2022-11-23 02:25:08,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:25:08,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 628 transitions. [2022-11-23 02:25:08,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.6) internal successors, (628), 5 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:08,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:08,491 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:08,491 INFO L175 Difference]: Start difference. First operand has 71 places, 77 transitions, 342 flow. Second operand 5 states and 628 transitions. [2022-11-23 02:25:08,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 143 transitions, 791 flow [2022-11-23 02:25:08,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 143 transitions, 791 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:25:08,505 INFO L231 Difference]: Finished difference. Result has 78 places, 75 transitions, 381 flow [2022-11-23 02:25:08,506 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=381, PETRI_PLACES=78, PETRI_TRANSITIONS=75} [2022-11-23 02:25:08,506 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 27 predicate places. [2022-11-23 02:25:08,507 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 75 transitions, 381 flow [2022-11-23 02:25:08,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:08,507 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:25:08,507 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:25:08,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 02:25:08,508 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-23 02:25:08,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:25:08,509 INFO L85 PathProgramCache]: Analyzing trace with hash 580288743, now seen corresponding path program 1 times [2022-11-23 02:25:08,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:25:08,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516311481] [2022-11-23 02:25:08,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:25:08,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:25:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:25:08,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:25:08,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:25:08,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516311481] [2022-11-23 02:25:08,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516311481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:25:08,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:25:08,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:25:08,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507430249] [2022-11-23 02:25:08,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:25:08,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:25:08,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:25:08,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:25:08,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:25:08,586 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 211 [2022-11-23 02:25:08,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 381 flow. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:08,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:25:08,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 211 [2022-11-23 02:25:08,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:25:09,275 INFO L130 PetriNetUnfolder]: 2392/4456 cut-off events. [2022-11-23 02:25:09,275 INFO L131 PetriNetUnfolder]: For 3987/4182 co-relation queries the response was YES. [2022-11-23 02:25:09,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11739 conditions, 4456 events. 2392/4456 cut-off events. For 3987/4182 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 27772 event pairs, 884 based on Foata normal form. 100/4150 useless extension candidates. Maximal degree in co-relation 11721. Up to 2258 conditions per place. [2022-11-23 02:25:09,295 INFO L137 encePairwiseOnDemand]: 204/211 looper letters, 41 selfloop transitions, 3 changer transitions 46/111 dead transitions. [2022-11-23 02:25:09,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 111 transitions, 693 flow [2022-11-23 02:25:09,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:25:09,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 02:25:09,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 622 transitions. [2022-11-23 02:25:09,298 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5895734597156398 [2022-11-23 02:25:09,298 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 622 transitions. [2022-11-23 02:25:09,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 622 transitions. [2022-11-23 02:25:09,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:25:09,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 622 transitions. [2022-11-23 02:25:09,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.4) internal successors, (622), 5 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:09,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:09,303 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:09,303 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 381 flow. Second operand 5 states and 622 transitions. [2022-11-23 02:25:09,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 111 transitions, 693 flow [2022-11-23 02:25:09,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 111 transitions, 637 flow, removed 25 selfloop flow, removed 2 redundant places. [2022-11-23 02:25:09,315 INFO L231 Difference]: Finished difference. Result has 80 places, 57 transitions, 263 flow [2022-11-23 02:25:09,315 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=263, PETRI_PLACES=80, PETRI_TRANSITIONS=57} [2022-11-23 02:25:09,317 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 29 predicate places. [2022-11-23 02:25:09,317 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 57 transitions, 263 flow [2022-11-23 02:25:09,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:09,318 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:25:09,318 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:25:09,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 02:25:09,318 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-23 02:25:09,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:25:09,319 INFO L85 PathProgramCache]: Analyzing trace with hash 2107744628, now seen corresponding path program 1 times [2022-11-23 02:25:09,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:25:09,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686094297] [2022-11-23 02:25:09,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:25:09,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:25:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:25:09,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:25:09,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:25:09,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686094297] [2022-11-23 02:25:09,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686094297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:25:09,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:25:09,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:25:09,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645304709] [2022-11-23 02:25:09,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:25:09,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:25:09,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:25:09,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:25:09,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:25:09,391 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 211 [2022-11-23 02:25:09,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 57 transitions, 263 flow. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:09,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:25:09,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 211 [2022-11-23 02:25:09,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:25:09,637 INFO L130 PetriNetUnfolder]: 813/1642 cut-off events. [2022-11-23 02:25:09,638 INFO L131 PetriNetUnfolder]: For 1629/1652 co-relation queries the response was YES. [2022-11-23 02:25:09,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4425 conditions, 1642 events. 813/1642 cut-off events. For 1629/1652 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 9095 event pairs, 294 based on Foata normal form. 2/1503 useless extension candidates. Maximal degree in co-relation 4406. Up to 748 conditions per place. [2022-11-23 02:25:09,645 INFO L137 encePairwiseOnDemand]: 205/211 looper letters, 0 selfloop transitions, 0 changer transitions 83/83 dead transitions. [2022-11-23 02:25:09,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 83 transitions, 471 flow [2022-11-23 02:25:09,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:25:09,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 02:25:09,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 607 transitions. [2022-11-23 02:25:09,648 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5753554502369668 [2022-11-23 02:25:09,648 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 607 transitions. [2022-11-23 02:25:09,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 607 transitions. [2022-11-23 02:25:09,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:25:09,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 607 transitions. [2022-11-23 02:25:09,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.4) internal successors, (607), 5 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:09,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:09,653 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:09,653 INFO L175 Difference]: Start difference. First operand has 80 places, 57 transitions, 263 flow. Second operand 5 states and 607 transitions. [2022-11-23 02:25:09,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 83 transitions, 471 flow [2022-11-23 02:25:09,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 83 transitions, 426 flow, removed 9 selfloop flow, removed 9 redundant places. [2022-11-23 02:25:09,662 INFO L231 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2022-11-23 02:25:09,662 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=64, PETRI_TRANSITIONS=0} [2022-11-23 02:25:09,662 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2022-11-23 02:25:09,663 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2022-11-23 02:25:09,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:25:09,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-11-23 02:25:09,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-11-23 02:25:09,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-11-23 02:25:09,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-11-23 02:25:09,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-11-23 02:25:09,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-11-23 02:25:09,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 02:25:09,668 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1] [2022-11-23 02:25:09,673 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-23 02:25:09,673 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 02:25:09,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:25:09 BasicIcfg [2022-11-23 02:25:09,677 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 02:25:09,677 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 02:25:09,677 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 02:25:09,677 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 02:25:09,678 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:25:00" (3/4) ... [2022-11-23 02:25:09,680 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 02:25:09,686 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2022-11-23 02:25:09,686 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2022-11-23 02:25:09,690 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-23 02:25:09,690 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-23 02:25:09,690 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-23 02:25:09,690 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 02:25:09,718 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d80c2b-c70f-46a3-be8d-421a602b26b4/bin/uautomizer-QkZJyEgLgS/witness.graphml [2022-11-23 02:25:09,718 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 02:25:09,719 INFO L158 Benchmark]: Toolchain (without parser) took 10115.59ms. Allocated memory was 172.0MB in the beginning and 444.6MB in the end (delta: 272.6MB). Free memory was 141.1MB in the beginning and 182.8MB in the end (delta: -41.7MB). Peak memory consumption was 233.7MB. Max. memory is 16.1GB. [2022-11-23 02:25:09,719 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 117.4MB. Free memory is still 71.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 02:25:09,719 INFO L158 Benchmark]: CACSL2BoogieTranslator took 573.46ms. Allocated memory is still 172.0MB. Free memory was 140.6MB in the beginning and 119.8MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-23 02:25:09,720 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.01ms. Allocated memory is still 172.0MB. Free memory was 119.8MB in the beginning and 117.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 02:25:09,720 INFO L158 Benchmark]: Boogie Preprocessor took 30.19ms. Allocated memory is still 172.0MB. Free memory was 117.8MB in the beginning and 116.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 02:25:09,720 INFO L158 Benchmark]: RCFGBuilder took 507.50ms. Allocated memory is still 172.0MB. Free memory was 116.1MB in the beginning and 101.0MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 02:25:09,721 INFO L158 Benchmark]: TraceAbstraction took 8894.73ms. Allocated memory was 172.0MB in the beginning and 444.6MB in the end (delta: 272.6MB). Free memory was 100.3MB in the beginning and 185.9MB in the end (delta: -85.6MB). Peak memory consumption was 187.5MB. Max. memory is 16.1GB. [2022-11-23 02:25:09,721 INFO L158 Benchmark]: Witness Printer took 40.98ms. Allocated memory is still 444.6MB. Free memory was 185.9MB in the beginning and 182.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 02:25:09,723 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 117.4MB. Free memory is still 71.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 573.46ms. Allocated memory is still 172.0MB. Free memory was 140.6MB in the beginning and 119.8MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.01ms. Allocated memory is still 172.0MB. Free memory was 119.8MB in the beginning and 117.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.19ms. Allocated memory is still 172.0MB. Free memory was 117.8MB in the beginning and 116.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 507.50ms. Allocated memory is still 172.0MB. Free memory was 116.1MB in the beginning and 101.0MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8894.73ms. Allocated memory was 172.0MB in the beginning and 444.6MB in the end (delta: 272.6MB). Free memory was 100.3MB in the beginning and 185.9MB in the end (delta: -85.6MB). Peak memory consumption was 187.5MB. Max. memory is 16.1GB. * Witness Printer took 40.98ms. Allocated memory is still 444.6MB. Free memory was 185.9MB in the beginning and 182.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 104 PlacesBefore, 51 PlacesAfterwards, 121 TransitionsBefore, 61 TransitionsAfterwards, 4988 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 7 ChoiceCompositions, 78 TotalNumberOfCompositions, 13083 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6682, independent: 6369, independent conditional: 0, independent unconditional: 6369, dependent: 313, dependent conditional: 0, dependent unconditional: 313, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3026, independent: 2971, independent conditional: 0, independent unconditional: 2971, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3026, independent: 2937, independent conditional: 0, independent unconditional: 2937, dependent: 89, dependent conditional: 0, dependent unconditional: 89, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 89, independent: 34, independent conditional: 0, independent unconditional: 34, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 136, independent: 37, independent conditional: 0, independent unconditional: 37, dependent: 99, dependent conditional: 0, dependent unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6682, independent: 3398, independent conditional: 0, independent unconditional: 3398, dependent: 258, dependent conditional: 0, dependent unconditional: 258, unknown: 3026, unknown conditional: 0, unknown unconditional: 3026] , Statistics on independence cache: Total cache size (in pairs): 693, Positive cache size: 647, Positive conditional cache size: 0, Positive unconditional cache size: 647, Negative cache size: 46, Negative conditional cache size: 0, Negative unconditional cache size: 46, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 834]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 764]: 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, 176 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: 8.7s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 522 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 416 mSDsluCounter, 72 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1352 IncrementalHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 46 mSDtfsCounter, 1352 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=381occurred in iteration=7, InterpolantAutomatonStates: 36, 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, 0.5s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 223 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2022-11-23 02:25:09,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d80c2b-c70f-46a3-be8d-421a602b26b4/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE