./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/queue_longer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_longer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --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 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:13:48,894 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:13:48,971 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 04:13:48,976 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:13:48,977 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:13:49,008 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:13:49,009 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:13:49,010 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:13:49,010 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:13:49,011 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:13:49,011 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:13:49,012 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:13:49,013 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:13:49,013 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:13:49,014 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:13:49,014 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:13:49,015 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:13:49,015 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:13:49,016 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:13:49,016 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:13:49,017 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:13:49,017 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:13:49,018 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:13:49,018 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:13:49,019 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:13:49,019 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:13:49,020 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:13:49,020 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:13:49,021 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:13:49,021 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:13:49,021 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:13:49,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:13:49,022 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:13:49,022 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:13:49,023 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:13:49,023 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:13:49,023 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:13:49,023 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:13:49,023 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:13:49,023 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:13:49,024 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:13:49,024 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:13:49,024 INFO L153 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_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 [2023-11-29 04:13:49,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:13:49,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:13:49,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:13:49,273 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:13:49,274 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:13:49,275 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread/queue_longer.i [2023-11-29 04:13:51,945 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:13:52,200 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:13:52,201 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/sv-benchmarks/c/pthread/queue_longer.i [2023-11-29 04:13:52,218 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/data/4df88faca/65f8e95474014c43a8e598c04c00392a/FLAG7b4b871df [2023-11-29 04:13:52,229 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/data/4df88faca/65f8e95474014c43a8e598c04c00392a [2023-11-29 04:13:52,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:13:52,232 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:13:52,233 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:13:52,233 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:13:52,237 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:13:52,238 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:13:52" (1/1) ... [2023-11-29 04:13:52,239 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ec26d62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:52, skipping insertion in model container [2023-11-29 04:13:52,239 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:13:52" (1/1) ... [2023-11-29 04:13:52,292 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:13:52,641 WARN L240 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_234ded65-2a5c-4c58-8b89-041286fd00b5/sv-benchmarks/c/pthread/queue_longer.i[43296,43309] [2023-11-29 04:13:52,648 WARN L240 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_234ded65-2a5c-4c58-8b89-041286fd00b5/sv-benchmarks/c/pthread/queue_longer.i[43503,43516] [2023-11-29 04:13:52,652 WARN L240 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_234ded65-2a5c-4c58-8b89-041286fd00b5/sv-benchmarks/c/pthread/queue_longer.i[43783,43796] [2023-11-29 04:13:52,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:13:52,668 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:13:52,718 WARN L240 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_234ded65-2a5c-4c58-8b89-041286fd00b5/sv-benchmarks/c/pthread/queue_longer.i[43296,43309] [2023-11-29 04:13:52,720 WARN L240 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_234ded65-2a5c-4c58-8b89-041286fd00b5/sv-benchmarks/c/pthread/queue_longer.i[43503,43516] [2023-11-29 04:13:52,723 WARN L240 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_234ded65-2a5c-4c58-8b89-041286fd00b5/sv-benchmarks/c/pthread/queue_longer.i[43783,43796] [2023-11-29 04:13:52,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:13:52,798 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:13:52,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:52 WrapperNode [2023-11-29 04:13:52,798 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:13:52,799 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:13:52,800 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:13:52,800 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:13:52,807 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:52" (1/1) ... [2023-11-29 04:13:52,828 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:52" (1/1) ... [2023-11-29 04:13:52,859 INFO L138 Inliner]: procedures = 275, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 251 [2023-11-29 04:13:52,860 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:13:52,860 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:13:52,860 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:13:52,861 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:13:52,872 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:52" (1/1) ... [2023-11-29 04:13:52,872 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:52" (1/1) ... [2023-11-29 04:13:52,878 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:52" (1/1) ... [2023-11-29 04:13:52,909 INFO L175 MemorySlicer]: Split 47 memory accesses to 6 slices as follows [2, 5, 4, 2, 2, 32]. 68 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0, 0, 0]. The 20 writes are split as follows [0, 0, 3, 1, 1, 15]. [2023-11-29 04:13:52,909 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:52" (1/1) ... [2023-11-29 04:13:52,910 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:52" (1/1) ... [2023-11-29 04:13:52,923 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:52" (1/1) ... [2023-11-29 04:13:52,927 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:52" (1/1) ... [2023-11-29 04:13:52,931 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:52" (1/1) ... [2023-11-29 04:13:52,933 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:52" (1/1) ... [2023-11-29 04:13:52,938 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:13:52,940 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:13:52,940 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:13:52,940 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:13:52,941 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:52" (1/1) ... [2023-11-29 04:13:52,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:13:52,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:52,990 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:13:53,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:13:53,035 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-29 04:13:53,036 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-29 04:13:53,036 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-29 04:13:53,036 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-29 04:13:53,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:13:53,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:13:53,036 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 04:13:53,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 04:13:53,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 04:13:53,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 04:13:53,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 04:13:53,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 04:13:53,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 04:13:53,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 04:13:53,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 04:13:53,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 04:13:53,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 04:13:53,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 04:13:53,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 04:13:53,038 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 04:13:53,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:13:53,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:13:53,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 04:13:53,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 04:13:53,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 04:13:53,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 04:13:53,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 04:13:53,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:13:53,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:13:53,041 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 04:13:53,202 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:13:53,204 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:13:53,516 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:13:53,825 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:13:53,825 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 04:13:53,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:13:53 BoogieIcfgContainer [2023-11-29 04:13:53,825 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:13:53,828 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:13:53,828 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:13:53,831 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:13:53,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:13:52" (1/3) ... [2023-11-29 04:13:53,832 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c07ef95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:13:53, skipping insertion in model container [2023-11-29 04:13:53,832 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:52" (2/3) ... [2023-11-29 04:13:53,832 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c07ef95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:13:53, skipping insertion in model container [2023-11-29 04:13:53,832 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:13:53" (3/3) ... [2023-11-29 04:13:53,834 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2023-11-29 04:13:53,873 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 04:13:53,883 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:13:53,883 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-29 04:13:53,883 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 04:13:53,951 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 04:13:53,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 48 transitions, 110 flow [2023-11-29 04:13:54,016 INFO L124 PetriNetUnfolderBase]: 7/46 cut-off events. [2023-11-29 04:13:54,017 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 04:13:54,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 7/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-11-29 04:13:54,021 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 48 transitions, 110 flow [2023-11-29 04:13:54,024 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 44 transitions, 97 flow [2023-11-29 04:13:54,035 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:13:54,041 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=LoopHeads, 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;@450b46e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:13:54,042 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-29 04:13:54,045 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:13:54,045 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-11-29 04:13:54,046 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:13:54,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:13:54,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 04:13:54,047 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 04:13:54,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:54,052 INFO L85 PathProgramCache]: Analyzing trace with hash 648967, now seen corresponding path program 1 times [2023-11-29 04:13:54,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:54,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638673753] [2023-11-29 04:13:54,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:54,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:54,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:13:54,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:13:54,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638673753] [2023-11-29 04:13:54,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638673753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:13:54,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:13:54,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:13:54,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514841118] [2023-11-29 04:13:54,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:13:54,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 04:13:54,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:13:54,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 04:13:54,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:13:54,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2023-11-29 04:13:54,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 97 flow. Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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) [2023-11-29 04:13:54,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:13:54,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2023-11-29 04:13:54,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:13:54,514 INFO L124 PetriNetUnfolderBase]: 435/787 cut-off events. [2023-11-29 04:13:54,514 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-11-29 04:13:54,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1540 conditions, 787 events. 435/787 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3602 event pairs, 339 based on Foata normal form. 48/745 useless extension candidates. Maximal degree in co-relation 1440. Up to 713 conditions per place. [2023-11-29 04:13:54,524 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 32 selfloop transitions, 0 changer transitions 0/39 dead transitions. [2023-11-29 04:13:54,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 39 transitions, 151 flow [2023-11-29 04:13:54,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 04:13:54,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-29 04:13:54,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 55 transitions. [2023-11-29 04:13:54,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2023-11-29 04:13:54,538 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 55 transitions. [2023-11-29 04:13:54,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 55 transitions. [2023-11-29 04:13:54,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:13:54,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 55 transitions. [2023-11-29 04:13:54,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 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) [2023-11-29 04:13:54,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2023-11-29 04:13:54,547 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2023-11-29 04:13:54,549 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 97 flow. Second operand 2 states and 55 transitions. [2023-11-29 04:13:54,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 39 transitions, 151 flow [2023-11-29 04:13:54,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 146 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:13:54,582 INFO L231 Difference]: Finished difference. Result has 40 places, 39 transitions, 82 flow [2023-11-29 04:13:54,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=82, PETRI_PLACES=40, PETRI_TRANSITIONS=39} [2023-11-29 04:13:54,588 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -4 predicate places. [2023-11-29 04:13:54,588 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 39 transitions, 82 flow [2023-11-29 04:13:54,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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) [2023-11-29 04:13:54,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:13:54,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:54,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:13:54,589 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 04:13:54,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:54,590 INFO L85 PathProgramCache]: Analyzing trace with hash 45317787, now seen corresponding path program 1 times [2023-11-29 04:13:54,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:54,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929610697] [2023-11-29 04:13:54,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:54,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:54,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:13:54,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:13:54,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929610697] [2023-11-29 04:13:54,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929610697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:13:54,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:13:54,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:13:54,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227198281] [2023-11-29 04:13:54,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:13:54,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:13:54,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:13:54,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:13:54,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:13:54,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2023-11-29 04:13:54,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2023-11-29 04:13:54,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:13:54,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2023-11-29 04:13:54,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:13:54,933 INFO L124 PetriNetUnfolderBase]: 415/767 cut-off events. [2023-11-29 04:13:54,933 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 04:13:54,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1489 conditions, 767 events. 415/767 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3602 event pairs, 312 based on Foata normal form. 0/698 useless extension candidates. Maximal degree in co-relation 1486. Up to 643 conditions per place. [2023-11-29 04:13:54,940 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 41 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-11-29 04:13:54,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 192 flow [2023-11-29 04:13:54,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:13:54,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:13:54,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2023-11-29 04:13:54,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2023-11-29 04:13:54,942 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 74 transitions. [2023-11-29 04:13:54,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 74 transitions. [2023-11-29 04:13:54,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:13:54,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 74 transitions. [2023-11-29 04:13:54,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2023-11-29 04:13:54,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2023-11-29 04:13:54,945 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2023-11-29 04:13:54,945 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 82 flow. Second operand 3 states and 74 transitions. [2023-11-29 04:13:54,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 192 flow [2023-11-29 04:13:54,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 50 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:13:54,948 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 84 flow [2023-11-29 04:13:54,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2023-11-29 04:13:54,949 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -2 predicate places. [2023-11-29 04:13:54,949 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 84 flow [2023-11-29 04:13:54,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2023-11-29 04:13:54,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:13:54,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:54,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 04:13:54,950 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 04:13:54,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:54,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1404853059, now seen corresponding path program 1 times [2023-11-29 04:13:54,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:54,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894468644] [2023-11-29 04:13:54,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:54,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:55,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:13:55,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:13:55,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894468644] [2023-11-29 04:13:55,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894468644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:13:55,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:13:55,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:13:55,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257413097] [2023-11-29 04:13:55,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:13:55,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:13:55,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:13:55,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:13:55,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:13:55,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2023-11-29 04:13:55,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 84 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2023-11-29 04:13:55,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:13:55,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2023-11-29 04:13:55,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:13:55,774 INFO L124 PetriNetUnfolderBase]: 690/1270 cut-off events. [2023-11-29 04:13:55,774 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-29 04:13:55,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2486 conditions, 1270 events. 690/1270 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6373 event pairs, 74 based on Foata normal form. 0/1208 useless extension candidates. Maximal degree in co-relation 2482. Up to 678 conditions per place. [2023-11-29 04:13:55,784 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 73 selfloop transitions, 10 changer transitions 3/93 dead transitions. [2023-11-29 04:13:55,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 93 transitions, 379 flow [2023-11-29 04:13:55,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:13:55,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:13:55,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2023-11-29 04:13:55,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2023-11-29 04:13:55,787 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 148 transitions. [2023-11-29 04:13:55,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 148 transitions. [2023-11-29 04:13:55,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:13:55,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 148 transitions. [2023-11-29 04:13:55,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 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) [2023-11-29 04:13:55,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 48.0) internal successors, (336), 7 states have internal predecessors, (336), 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) [2023-11-29 04:13:55,791 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 48.0) internal successors, (336), 7 states have internal predecessors, (336), 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) [2023-11-29 04:13:55,791 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 84 flow. Second operand 6 states and 148 transitions. [2023-11-29 04:13:55,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 93 transitions, 379 flow [2023-11-29 04:13:55,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 93 transitions, 369 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:13:55,794 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 148 flow [2023-11-29 04:13:55,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=148, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2023-11-29 04:13:55,795 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 4 predicate places. [2023-11-29 04:13:55,795 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 148 flow [2023-11-29 04:13:55,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2023-11-29 04:13:55,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:13:55,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:55,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 04:13:55,796 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 04:13:55,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:55,797 INFO L85 PathProgramCache]: Analyzing trace with hash 539130094, now seen corresponding path program 1 times [2023-11-29 04:13:55,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:55,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93230604] [2023-11-29 04:13:55,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:55,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:55,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:13:55,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:13:55,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93230604] [2023-11-29 04:13:55,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93230604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:13:55,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:13:55,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:13:55,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487204116] [2023-11-29 04:13:55,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:13:55,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:13:55,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:13:55,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:13:55,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:13:55,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2023-11-29 04:13:55,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2023-11-29 04:13:55,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:13:55,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2023-11-29 04:13:55,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:13:56,079 INFO L124 PetriNetUnfolderBase]: 440/850 cut-off events. [2023-11-29 04:13:56,079 INFO L125 PetriNetUnfolderBase]: For 152/155 co-relation queries the response was YES. [2023-11-29 04:13:56,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1755 conditions, 850 events. 440/850 cut-off events. For 152/155 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3769 event pairs, 226 based on Foata normal form. 30/855 useless extension candidates. Maximal degree in co-relation 1748. Up to 437 conditions per place. [2023-11-29 04:13:56,084 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 38 selfloop transitions, 4 changer transitions 4/52 dead transitions. [2023-11-29 04:13:56,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 225 flow [2023-11-29 04:13:56,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:13:56,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:13:56,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2023-11-29 04:13:56,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2023-11-29 04:13:56,086 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 76 transitions. [2023-11-29 04:13:56,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 76 transitions. [2023-11-29 04:13:56,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:13:56,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 76 transitions. [2023-11-29 04:13:56,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2023-11-29 04:13:56,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2023-11-29 04:13:56,088 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2023-11-29 04:13:56,088 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 148 flow. Second operand 3 states and 76 transitions. [2023-11-29 04:13:56,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 225 flow [2023-11-29 04:13:56,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 52 transitions, 219 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:13:56,091 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 110 flow [2023-11-29 04:13:56,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2023-11-29 04:13:56,092 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2023-11-29 04:13:56,092 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 110 flow [2023-11-29 04:13:56,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2023-11-29 04:13:56,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:13:56,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:56,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 04:13:56,093 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 04:13:56,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:56,094 INFO L85 PathProgramCache]: Analyzing trace with hash -208853551, now seen corresponding path program 1 times [2023-11-29 04:13:56,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:56,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719393345] [2023-11-29 04:13:56,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:56,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:56,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:13:56,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:13:56,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719393345] [2023-11-29 04:13:56,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719393345] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:13:56,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:13:56,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:13:56,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532392492] [2023-11-29 04:13:56,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:13:56,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:13:56,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:13:56,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:13:56,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:13:56,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2023-11-29 04:13:56,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2023-11-29 04:13:56,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:13:56,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2023-11-29 04:13:56,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:13:56,365 INFO L124 PetriNetUnfolderBase]: 265/581 cut-off events. [2023-11-29 04:13:56,365 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-11-29 04:13:56,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1201 conditions, 581 events. 265/581 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2362 event pairs, 91 based on Foata normal form. 32/602 useless extension candidates. Maximal degree in co-relation 1193. Up to 266 conditions per place. [2023-11-29 04:13:56,369 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 36 selfloop transitions, 6 changer transitions 0/48 dead transitions. [2023-11-29 04:13:56,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 219 flow [2023-11-29 04:13:56,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:13:56,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:13:56,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2023-11-29 04:13:56,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2023-11-29 04:13:56,371 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 73 transitions. [2023-11-29 04:13:56,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 73 transitions. [2023-11-29 04:13:56,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:13:56,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 73 transitions. [2023-11-29 04:13:56,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2023-11-29 04:13:56,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2023-11-29 04:13:56,373 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2023-11-29 04:13:56,373 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 110 flow. Second operand 3 states and 73 transitions. [2023-11-29 04:13:56,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 219 flow [2023-11-29 04:13:56,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 209 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-29 04:13:56,376 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 112 flow [2023-11-29 04:13:56,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2023-11-29 04:13:56,377 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2023-11-29 04:13:56,378 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 112 flow [2023-11-29 04:13:56,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2023-11-29 04:13:56,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:13:56,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:56,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 04:13:56,379 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 04:13:56,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:56,379 INFO L85 PathProgramCache]: Analyzing trace with hash -920991809, now seen corresponding path program 1 times [2023-11-29 04:13:56,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:56,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948957718] [2023-11-29 04:13:56,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:56,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:57,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:13:57,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:13:57,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948957718] [2023-11-29 04:13:57,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948957718] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:13:57,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:13:57,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:13:57,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949739472] [2023-11-29 04:13:57,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:13:57,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:13:57,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:13:57,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:13:57,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:13:57,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2023-11-29 04:13:57,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 112 flow. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 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) [2023-11-29 04:13:57,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:13:57,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2023-11-29 04:13:57,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:13:58,284 INFO L124 PetriNetUnfolderBase]: 384/839 cut-off events. [2023-11-29 04:13:58,284 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2023-11-29 04:13:58,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1827 conditions, 839 events. 384/839 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4110 event pairs, 88 based on Foata normal form. 0/823 useless extension candidates. Maximal degree in co-relation 1820. Up to 288 conditions per place. [2023-11-29 04:13:58,289 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 67 selfloop transitions, 14 changer transitions 12/99 dead transitions. [2023-11-29 04:13:58,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 99 transitions, 479 flow [2023-11-29 04:13:58,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:13:58,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 04:13:58,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2023-11-29 04:13:58,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2023-11-29 04:13:58,291 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 183 transitions. [2023-11-29 04:13:58,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 183 transitions. [2023-11-29 04:13:58,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:13:58,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 183 transitions. [2023-11-29 04:13:58,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 20.333333333333332) internal successors, (183), 9 states have internal predecessors, (183), 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) [2023-11-29 04:13:58,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 48.0) internal successors, (480), 10 states have internal predecessors, (480), 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) [2023-11-29 04:13:58,295 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 48.0) internal successors, (480), 10 states have internal predecessors, (480), 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) [2023-11-29 04:13:58,295 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 112 flow. Second operand 9 states and 183 transitions. [2023-11-29 04:13:58,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 99 transitions, 479 flow [2023-11-29 04:13:58,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 99 transitions, 457 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:13:58,300 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 204 flow [2023-11-29 04:13:58,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=204, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2023-11-29 04:13:58,301 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 12 predicate places. [2023-11-29 04:13:58,301 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 204 flow [2023-11-29 04:13:58,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 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) [2023-11-29 04:13:58,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:13:58,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:58,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 04:13:58,302 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 04:13:58,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:58,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1903497435, now seen corresponding path program 2 times [2023-11-29 04:13:58,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:58,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633080208] [2023-11-29 04:13:58,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:58,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:59,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:13:59,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:13:59,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633080208] [2023-11-29 04:13:59,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633080208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:13:59,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:13:59,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:13:59,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445633193] [2023-11-29 04:13:59,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:13:59,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:13:59,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:13:59,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:13:59,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:13:59,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2023-11-29 04:13:59,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 204 flow. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 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) [2023-11-29 04:13:59,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:13:59,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2023-11-29 04:13:59,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:13:59,793 INFO L124 PetriNetUnfolderBase]: 501/1111 cut-off events. [2023-11-29 04:13:59,793 INFO L125 PetriNetUnfolderBase]: For 863/865 co-relation queries the response was YES. [2023-11-29 04:13:59,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2877 conditions, 1111 events. 501/1111 cut-off events. For 863/865 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 6256 event pairs, 140 based on Foata normal form. 0/1090 useless extension candidates. Maximal degree in co-relation 2864. Up to 661 conditions per place. [2023-11-29 04:13:59,800 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 72 selfloop transitions, 17 changer transitions 6/101 dead transitions. [2023-11-29 04:13:59,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 101 transitions, 601 flow [2023-11-29 04:13:59,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:13:59,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:13:59,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2023-11-29 04:13:59,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2023-11-29 04:13:59,803 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 184 transitions. [2023-11-29 04:13:59,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 184 transitions. [2023-11-29 04:13:59,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:13:59,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 184 transitions. [2023-11-29 04:13:59,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 18.4) internal successors, (184), 10 states have internal predecessors, (184), 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) [2023-11-29 04:13:59,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 48.0) internal successors, (528), 11 states have internal predecessors, (528), 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) [2023-11-29 04:13:59,807 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 48.0) internal successors, (528), 11 states have internal predecessors, (528), 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) [2023-11-29 04:13:59,807 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 204 flow. Second operand 10 states and 184 transitions. [2023-11-29 04:13:59,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 101 transitions, 601 flow [2023-11-29 04:13:59,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 101 transitions, 581 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-29 04:13:59,813 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 366 flow [2023-11-29 04:13:59,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=366, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2023-11-29 04:13:59,814 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 25 predicate places. [2023-11-29 04:13:59,814 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 366 flow [2023-11-29 04:13:59,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 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) [2023-11-29 04:13:59,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:13:59,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:59,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 04:13:59,815 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 04:13:59,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:59,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1159602507, now seen corresponding path program 3 times [2023-11-29 04:13:59,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:59,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651293722] [2023-11-29 04:13:59,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:59,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:00,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:00,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:00,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651293722] [2023-11-29 04:14:00,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651293722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:14:00,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:14:00,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:14:00,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008993471] [2023-11-29 04:14:00,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:14:00,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:14:00,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:00,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:14:00,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:14:00,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2023-11-29 04:14:00,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 366 flow. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 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) [2023-11-29 04:14:00,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:14:00,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2023-11-29 04:14:00,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:14:01,205 INFO L124 PetriNetUnfolderBase]: 642/1412 cut-off events. [2023-11-29 04:14:01,205 INFO L125 PetriNetUnfolderBase]: For 1849/1849 co-relation queries the response was YES. [2023-11-29 04:14:01,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3993 conditions, 1412 events. 642/1412 cut-off events. For 1849/1849 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 8226 event pairs, 92 based on Foata normal form. 0/1394 useless extension candidates. Maximal degree in co-relation 3973. Up to 333 conditions per place. [2023-11-29 04:14:01,214 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 85 selfloop transitions, 27 changer transitions 6/124 dead transitions. [2023-11-29 04:14:01,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 124 transitions, 855 flow [2023-11-29 04:14:01,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:14:01,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 04:14:01,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2023-11-29 04:14:01,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2023-11-29 04:14:01,216 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 184 transitions. [2023-11-29 04:14:01,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 184 transitions. [2023-11-29 04:14:01,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:14:01,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 184 transitions. [2023-11-29 04:14:01,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 20.444444444444443) internal successors, (184), 9 states have internal predecessors, (184), 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) [2023-11-29 04:14:01,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 48.0) internal successors, (480), 10 states have internal predecessors, (480), 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) [2023-11-29 04:14:01,218 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 48.0) internal successors, (480), 10 states have internal predecessors, (480), 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) [2023-11-29 04:14:01,218 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 366 flow. Second operand 9 states and 184 transitions. [2023-11-29 04:14:01,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 124 transitions, 855 flow [2023-11-29 04:14:01,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 124 transitions, 809 flow, removed 23 selfloop flow, removed 0 redundant places. [2023-11-29 04:14:01,230 INFO L231 Difference]: Finished difference. Result has 80 places, 71 transitions, 467 flow [2023-11-29 04:14:01,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=467, PETRI_PLACES=80, PETRI_TRANSITIONS=71} [2023-11-29 04:14:01,231 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 36 predicate places. [2023-11-29 04:14:01,231 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 71 transitions, 467 flow [2023-11-29 04:14:01,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 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) [2023-11-29 04:14:01,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:14:01,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:14:01,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 04:14:01,232 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 04:14:01,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:01,233 INFO L85 PathProgramCache]: Analyzing trace with hash 2039450975, now seen corresponding path program 4 times [2023-11-29 04:14:01,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:01,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163268698] [2023-11-29 04:14:01,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:01,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:02,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:02,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:02,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163268698] [2023-11-29 04:14:02,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163268698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:14:02,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:14:02,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:14:02,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355697548] [2023-11-29 04:14:02,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:14:02,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:14:02,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:02,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:14:02,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:14:02,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2023-11-29 04:14:02,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 71 transitions, 467 flow. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 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) [2023-11-29 04:14:02,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:14:02,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2023-11-29 04:14:02,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:14:03,022 INFO L124 PetriNetUnfolderBase]: 736/1626 cut-off events. [2023-11-29 04:14:03,023 INFO L125 PetriNetUnfolderBase]: For 3122/3122 co-relation queries the response was YES. [2023-11-29 04:14:03,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4880 conditions, 1626 events. 736/1626 cut-off events. For 3122/3122 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9977 event pairs, 188 based on Foata normal form. 0/1602 useless extension candidates. Maximal degree in co-relation 4856. Up to 739 conditions per place. [2023-11-29 04:14:03,034 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 91 selfloop transitions, 21 changer transitions 12/130 dead transitions. [2023-11-29 04:14:03,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 130 transitions, 970 flow [2023-11-29 04:14:03,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:14:03,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 04:14:03,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 186 transitions. [2023-11-29 04:14:03,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2023-11-29 04:14:03,036 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 186 transitions. [2023-11-29 04:14:03,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 186 transitions. [2023-11-29 04:14:03,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:14:03,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 186 transitions. [2023-11-29 04:14:03,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 20.666666666666668) internal successors, (186), 9 states have internal predecessors, (186), 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) [2023-11-29 04:14:03,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 48.0) internal successors, (480), 10 states have internal predecessors, (480), 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) [2023-11-29 04:14:03,038 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 48.0) internal successors, (480), 10 states have internal predecessors, (480), 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) [2023-11-29 04:14:03,039 INFO L175 Difference]: Start difference. First operand has 80 places, 71 transitions, 467 flow. Second operand 9 states and 186 transitions. [2023-11-29 04:14:03,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 130 transitions, 970 flow [2023-11-29 04:14:03,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 130 transitions, 891 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-11-29 04:14:03,053 INFO L231 Difference]: Finished difference. Result has 88 places, 82 transitions, 596 flow [2023-11-29 04:14:03,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=596, PETRI_PLACES=88, PETRI_TRANSITIONS=82} [2023-11-29 04:14:03,053 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 44 predicate places. [2023-11-29 04:14:03,054 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 82 transitions, 596 flow [2023-11-29 04:14:03,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 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) [2023-11-29 04:14:03,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:14:03,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:14:03,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 04:14:03,054 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 04:14:03,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:03,055 INFO L85 PathProgramCache]: Analyzing trace with hash -901257295, now seen corresponding path program 5 times [2023-11-29 04:14:03,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:03,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110396433] [2023-11-29 04:14:03,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:03,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:04,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:04,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:04,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110396433] [2023-11-29 04:14:04,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110396433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:14:04,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:14:04,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:14:04,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754539261] [2023-11-29 04:14:04,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:14:04,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:14:04,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:04,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:14:04,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:14:04,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2023-11-29 04:14:04,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 82 transitions, 596 flow. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 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) [2023-11-29 04:14:04,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:14:04,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2023-11-29 04:14:04,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:14:04,791 INFO L124 PetriNetUnfolderBase]: 792/1728 cut-off events. [2023-11-29 04:14:04,791 INFO L125 PetriNetUnfolderBase]: For 3878/3878 co-relation queries the response was YES. [2023-11-29 04:14:04,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5353 conditions, 1728 events. 792/1728 cut-off events. For 3878/3878 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 10644 event pairs, 174 based on Foata normal form. 0/1706 useless extension candidates. Maximal degree in co-relation 5324. Up to 759 conditions per place. [2023-11-29 04:14:04,809 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 93 selfloop transitions, 29 changer transitions 9/137 dead transitions. [2023-11-29 04:14:04,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 137 transitions, 1091 flow [2023-11-29 04:14:04,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:14:04,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:14:04,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2023-11-29 04:14:04,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2023-11-29 04:14:04,811 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 195 transitions. [2023-11-29 04:14:04,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 195 transitions. [2023-11-29 04:14:04,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:14:04,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 195 transitions. [2023-11-29 04:14:04,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 19.5) internal successors, (195), 10 states have internal predecessors, (195), 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) [2023-11-29 04:14:04,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 48.0) internal successors, (528), 11 states have internal predecessors, (528), 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) [2023-11-29 04:14:04,814 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 48.0) internal successors, (528), 11 states have internal predecessors, (528), 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) [2023-11-29 04:14:04,814 INFO L175 Difference]: Start difference. First operand has 88 places, 82 transitions, 596 flow. Second operand 10 states and 195 transitions. [2023-11-29 04:14:04,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 137 transitions, 1091 flow [2023-11-29 04:14:04,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 137 transitions, 1006 flow, removed 39 selfloop flow, removed 2 redundant places. [2023-11-29 04:14:04,832 INFO L231 Difference]: Finished difference. Result has 97 places, 88 transitions, 673 flow [2023-11-29 04:14:04,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=673, PETRI_PLACES=97, PETRI_TRANSITIONS=88} [2023-11-29 04:14:04,833 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 53 predicate places. [2023-11-29 04:14:04,833 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 88 transitions, 673 flow [2023-11-29 04:14:04,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 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) [2023-11-29 04:14:04,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:14:04,834 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:14:04,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 04:14:04,834 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 04:14:04,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:04,835 INFO L85 PathProgramCache]: Analyzing trace with hash 839083241, now seen corresponding path program 1 times [2023-11-29 04:14:04,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:04,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921524100] [2023-11-29 04:14:04,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:04,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:06,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:06,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:06,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921524100] [2023-11-29 04:14:06,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921524100] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:14:06,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154240563] [2023-11-29 04:14:06,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:06,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:14:06,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:14:06,291 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:14:06,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:14:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:06,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 04:14:06,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:14:06,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2023-11-29 04:14:06,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 131 [2023-11-29 04:14:06,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 04:14:07,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 61 [2023-11-29 04:14:07,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2023-11-29 04:14:08,199 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:14:08,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 53 [2023-11-29 04:14:08,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 55 [2023-11-29 04:14:08,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:08,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:14:08,603 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-11-29 04:14:08,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2023-11-29 04:14:08,620 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:14:08,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2023-11-29 04:14:09,945 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:14:09,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2023-11-29 04:14:09,963 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-11-29 04:14:09,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2023-11-29 04:14:11,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-29 04:14:11,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2023-11-29 04:14:11,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-29 04:14:11,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2023-11-29 04:14:11,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-29 04:14:11,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2023-11-29 04:14:11,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2023-11-29 04:14:11,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-11-29 04:14:11,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2023-11-29 04:14:11,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-11-29 04:14:11,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-29 04:14:11,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2023-11-29 04:14:15,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:15,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154240563] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:14:15,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:14:15,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 29 [2023-11-29 04:14:15,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800800653] [2023-11-29 04:14:15,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:14:15,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 04:14:15,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:15,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 04:14:15,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=722, Unknown=0, NotChecked=0, Total=870 [2023-11-29 04:14:16,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2023-11-29 04:14:16,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 88 transitions, 673 flow. Second operand has 30 states, 30 states have (on average 11.366666666666667) internal successors, (341), 30 states have internal predecessors, (341), 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) [2023-11-29 04:14:16,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:14:16,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2023-11-29 04:14:16,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:14:20,727 INFO L124 PetriNetUnfolderBase]: 1084/2236 cut-off events. [2023-11-29 04:14:20,727 INFO L125 PetriNetUnfolderBase]: For 5015/5016 co-relation queries the response was YES. [2023-11-29 04:14:20,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6983 conditions, 2236 events. 1084/2236 cut-off events. For 5015/5016 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 13818 event pairs, 284 based on Foata normal form. 18/2242 useless extension candidates. Maximal degree in co-relation 6952. Up to 1410 conditions per place. [2023-11-29 04:14:20,748 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 146 selfloop transitions, 45 changer transitions 9/205 dead transitions. [2023-11-29 04:14:20,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 205 transitions, 1529 flow [2023-11-29 04:14:20,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 04:14:20,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-29 04:14:20,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 344 transitions. [2023-11-29 04:14:20,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2023-11-29 04:14:20,750 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 344 transitions. [2023-11-29 04:14:20,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 344 transitions. [2023-11-29 04:14:20,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:14:20,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 344 transitions. [2023-11-29 04:14:20,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 17.2) internal successors, (344), 20 states have internal predecessors, (344), 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) [2023-11-29 04:14:20,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 48.0) internal successors, (1008), 21 states have internal predecessors, (1008), 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) [2023-11-29 04:14:20,755 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 48.0) internal successors, (1008), 21 states have internal predecessors, (1008), 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) [2023-11-29 04:14:20,755 INFO L175 Difference]: Start difference. First operand has 97 places, 88 transitions, 673 flow. Second operand 20 states and 344 transitions. [2023-11-29 04:14:20,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 205 transitions, 1529 flow [2023-11-29 04:14:20,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 205 transitions, 1447 flow, removed 21 selfloop flow, removed 5 redundant places. [2023-11-29 04:14:20,775 INFO L231 Difference]: Finished difference. Result has 124 places, 117 transitions, 979 flow [2023-11-29 04:14:20,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=979, PETRI_PLACES=124, PETRI_TRANSITIONS=117} [2023-11-29 04:14:20,776 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 80 predicate places. [2023-11-29 04:14:20,776 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 117 transitions, 979 flow [2023-11-29 04:14:20,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 11.366666666666667) internal successors, (341), 30 states have internal predecessors, (341), 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) [2023-11-29 04:14:20,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:14:20,777 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:14:20,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:14:20,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:14:20,978 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 04:14:20,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:20,978 INFO L85 PathProgramCache]: Analyzing trace with hash -112814859, now seen corresponding path program 2 times [2023-11-29 04:14:20,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:20,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655855062] [2023-11-29 04:14:20,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:20,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:22,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:22,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655855062] [2023-11-29 04:14:22,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655855062] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:14:22,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326799463] [2023-11-29 04:14:22,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:14:22,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:14:22,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:14:22,360 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:14:22,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:14:22,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:14:22,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:14:22,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-29 04:14:22,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:14:22,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2023-11-29 04:14:22,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 131 [2023-11-29 04:14:22,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 16 [2023-11-29 04:14:22,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 04:14:23,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 114 [2023-11-29 04:14:23,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2023-11-29 04:14:23,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 04:14:23,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2023-11-29 04:14:23,462 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:14:23,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 15 [2023-11-29 04:14:23,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:23,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:14:23,793 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:14:23,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2023-11-29 04:14:23,811 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-11-29 04:14:23,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2023-11-29 04:14:25,280 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:14:25,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2023-11-29 04:14:25,297 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-11-29 04:14:25,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2023-11-29 04:14:29,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:29,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326799463] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:14:29,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:14:29,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 29 [2023-11-29 04:14:29,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467698159] [2023-11-29 04:14:29,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:14:29,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 04:14:29,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:29,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 04:14:29,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2023-11-29 04:14:29,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2023-11-29 04:14:29,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 117 transitions, 979 flow. Second operand has 30 states, 30 states have (on average 11.366666666666667) internal successors, (341), 30 states have internal predecessors, (341), 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) [2023-11-29 04:14:29,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:14:29,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2023-11-29 04:14:29,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:14:33,143 INFO L124 PetriNetUnfolderBase]: 1328/2698 cut-off events. [2023-11-29 04:14:33,143 INFO L125 PetriNetUnfolderBase]: For 13229/13229 co-relation queries the response was YES. [2023-11-29 04:14:33,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10991 conditions, 2698 events. 1328/2698 cut-off events. For 13229/13229 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 16577 event pairs, 154 based on Foata normal form. 32/2730 useless extension candidates. Maximal degree in co-relation 10947. Up to 1043 conditions per place. [2023-11-29 04:14:33,167 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 152 selfloop transitions, 79 changer transitions 14/250 dead transitions. [2023-11-29 04:14:33,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 250 transitions, 2360 flow [2023-11-29 04:14:33,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 04:14:33,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 04:14:33,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 316 transitions. [2023-11-29 04:14:33,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36574074074074076 [2023-11-29 04:14:33,169 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 316 transitions. [2023-11-29 04:14:33,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 316 transitions. [2023-11-29 04:14:33,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:14:33,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 316 transitions. [2023-11-29 04:14:33,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 17.555555555555557) internal successors, (316), 18 states have internal predecessors, (316), 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) [2023-11-29 04:14:33,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 48.0) internal successors, (912), 19 states have internal predecessors, (912), 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) [2023-11-29 04:14:33,172 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 48.0) internal successors, (912), 19 states have internal predecessors, (912), 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) [2023-11-29 04:14:33,172 INFO L175 Difference]: Start difference. First operand has 124 places, 117 transitions, 979 flow. Second operand 18 states and 316 transitions. [2023-11-29 04:14:33,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 250 transitions, 2360 flow [2023-11-29 04:14:33,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 250 transitions, 2218 flow, removed 57 selfloop flow, removed 6 redundant places. [2023-11-29 04:14:33,207 INFO L231 Difference]: Finished difference. Result has 141 places, 161 transitions, 1557 flow [2023-11-29 04:14:33,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1557, PETRI_PLACES=141, PETRI_TRANSITIONS=161} [2023-11-29 04:14:33,208 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 97 predicate places. [2023-11-29 04:14:33,208 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 161 transitions, 1557 flow [2023-11-29 04:14:33,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 11.366666666666667) internal successors, (341), 30 states have internal predecessors, (341), 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) [2023-11-29 04:14:33,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:14:33,208 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:14:33,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 04:14:33,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 04:14:33,409 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 04:14:33,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:33,409 INFO L85 PathProgramCache]: Analyzing trace with hash -103316661, now seen corresponding path program 3 times [2023-11-29 04:14:33,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:33,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396696376] [2023-11-29 04:14:33,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:33,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:34,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:34,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:34,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396696376] [2023-11-29 04:14:34,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396696376] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:14:34,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491725620] [2023-11-29 04:14:34,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:14:34,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:14:34,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:14:34,750 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:14:34,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:14:35,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 04:14:35,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:14:35,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-29 04:14:35,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:14:35,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2023-11-29 04:14:35,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 131 [2023-11-29 04:14:35,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 16 [2023-11-29 04:14:35,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 04:14:35,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 33 [2023-11-29 04:14:35,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 61 [2023-11-29 04:14:36,229 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:14:36,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 53 [2023-11-29 04:14:36,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 55 [2023-11-29 04:14:36,265 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:36,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:14:36,516 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-11-29 04:14:36,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2023-11-29 04:14:36,530 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:14:36,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2023-11-29 04:14:41,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:41,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491725620] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:14:41,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:14:41,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 29 [2023-11-29 04:14:41,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84957656] [2023-11-29 04:14:41,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:14:41,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 04:14:41,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:41,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 04:14:41,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=723, Unknown=0, NotChecked=0, Total=870 [2023-11-29 04:14:42,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2023-11-29 04:14:42,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 161 transitions, 1557 flow. Second operand has 30 states, 30 states have (on average 11.366666666666667) internal successors, (341), 30 states have internal predecessors, (341), 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) [2023-11-29 04:14:42,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:14:42,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2023-11-29 04:14:42,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:14:50,858 INFO L124 PetriNetUnfolderBase]: 1901/3837 cut-off events. [2023-11-29 04:14:50,859 INFO L125 PetriNetUnfolderBase]: For 27352/27352 co-relation queries the response was YES. [2023-11-29 04:14:50,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17459 conditions, 3837 events. 1901/3837 cut-off events. For 27352/27352 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 25115 event pairs, 208 based on Foata normal form. 30/3863 useless extension candidates. Maximal degree in co-relation 17408. Up to 936 conditions per place. [2023-11-29 04:14:50,896 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 249 selfloop transitions, 126 changer transitions 7/387 dead transitions. [2023-11-29 04:14:50,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 387 transitions, 4091 flow [2023-11-29 04:14:50,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 04:14:50,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-29 04:14:50,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 487 transitions. [2023-11-29 04:14:50,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3757716049382716 [2023-11-29 04:14:50,901 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 487 transitions. [2023-11-29 04:14:50,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 487 transitions. [2023-11-29 04:14:50,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:14:50,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 487 transitions. [2023-11-29 04:14:50,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 18.037037037037038) internal successors, (487), 27 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:14:50,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 48.0) internal successors, (1344), 28 states have internal predecessors, (1344), 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) [2023-11-29 04:14:50,907 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 48.0) internal successors, (1344), 28 states have internal predecessors, (1344), 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) [2023-11-29 04:14:50,908 INFO L175 Difference]: Start difference. First operand has 141 places, 161 transitions, 1557 flow. Second operand 27 states and 487 transitions. [2023-11-29 04:14:50,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 387 transitions, 4091 flow [2023-11-29 04:14:50,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 387 transitions, 3859 flow, removed 104 selfloop flow, removed 4 redundant places. [2023-11-29 04:14:50,977 INFO L231 Difference]: Finished difference. Result has 177 places, 223 transitions, 2572 flow [2023-11-29 04:14:50,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1417, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2572, PETRI_PLACES=177, PETRI_TRANSITIONS=223} [2023-11-29 04:14:50,978 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 133 predicate places. [2023-11-29 04:14:50,978 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 223 transitions, 2572 flow [2023-11-29 04:14:50,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 11.366666666666667) internal successors, (341), 30 states have internal predecessors, (341), 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) [2023-11-29 04:14:50,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:14:50,979 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:14:50,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:14:51,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:14:51,180 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 04:14:51,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:51,180 INFO L85 PathProgramCache]: Analyzing trace with hash -2094412981, now seen corresponding path program 4 times [2023-11-29 04:14:51,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:51,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265894480] [2023-11-29 04:14:51,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:51,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:52,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:52,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:52,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265894480] [2023-11-29 04:14:52,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265894480] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:14:52,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029029636] [2023-11-29 04:14:52,301 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 04:14:52,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:14:52,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:14:52,302 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:14:52,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:14:52,509 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 04:14:52,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:14:52,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-29 04:14:52,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:14:52,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2023-11-29 04:14:52,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 131 [2023-11-29 04:14:52,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 16 [2023-11-29 04:14:52,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 04:14:52,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 114 [2023-11-29 04:14:52,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2023-11-29 04:14:53,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2023-11-29 04:14:53,232 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:14:53,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 15 [2023-11-29 04:14:53,250 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:53,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:14:53,635 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:14:53,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2023-11-29 04:14:53,646 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-11-29 04:14:53,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2023-11-29 04:14:54,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:14:54,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2023-11-29 04:14:54,986 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-11-29 04:14:54,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2023-11-29 04:14:58,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:14:58,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029029636] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:14:58,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:14:58,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 29 [2023-11-29 04:14:58,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947370750] [2023-11-29 04:14:58,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:14:58,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 04:14:58,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:58,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 04:14:58,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=716, Unknown=0, NotChecked=0, Total=870 [2023-11-29 04:14:59,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2023-11-29 04:14:59,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 223 transitions, 2572 flow. Second operand has 30 states, 30 states have (on average 11.366666666666667) internal successors, (341), 30 states have internal predecessors, (341), 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) [2023-11-29 04:14:59,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:14:59,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2023-11-29 04:14:59,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:15:09,204 INFO L124 PetriNetUnfolderBase]: 2926/5983 cut-off events. [2023-11-29 04:15:09,204 INFO L125 PetriNetUnfolderBase]: For 84183/84183 co-relation queries the response was YES. [2023-11-29 04:15:09,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32155 conditions, 5983 events. 2926/5983 cut-off events. For 84183/84183 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 40502 event pairs, 110 based on Foata normal form. 136/6111 useless extension candidates. Maximal degree in co-relation 32089. Up to 1073 conditions per place. [2023-11-29 04:15:09,263 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 284 selfloop transitions, 293 changer transitions 13/595 dead transitions. [2023-11-29 04:15:09,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 595 transitions, 7565 flow [2023-11-29 04:15:09,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-29 04:15:09,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-11-29 04:15:09,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 666 transitions. [2023-11-29 04:15:09,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2023-11-29 04:15:09,266 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 666 transitions. [2023-11-29 04:15:09,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 666 transitions. [2023-11-29 04:15:09,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:15:09,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 666 transitions. [2023-11-29 04:15:09,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 18.0) internal successors, (666), 37 states have internal predecessors, (666), 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) [2023-11-29 04:15:09,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 48.0) internal successors, (1824), 38 states have internal predecessors, (1824), 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) [2023-11-29 04:15:09,271 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 48.0) internal successors, (1824), 38 states have internal predecessors, (1824), 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) [2023-11-29 04:15:09,272 INFO L175 Difference]: Start difference. First operand has 177 places, 223 transitions, 2572 flow. Second operand 37 states and 666 transitions. [2023-11-29 04:15:09,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 595 transitions, 7565 flow [2023-11-29 04:15:09,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 595 transitions, 6612 flow, removed 433 selfloop flow, removed 18 redundant places. [2023-11-29 04:15:09,543 INFO L231 Difference]: Finished difference. Result has 211 places, 390 transitions, 5474 flow [2023-11-29 04:15:09,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1828, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=5474, PETRI_PLACES=211, PETRI_TRANSITIONS=390} [2023-11-29 04:15:09,544 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 167 predicate places. [2023-11-29 04:15:09,544 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 390 transitions, 5474 flow [2023-11-29 04:15:09,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 11.366666666666667) internal successors, (341), 30 states have internal predecessors, (341), 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) [2023-11-29 04:15:09,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:15:09,544 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:15:09,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 04:15:09,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 04:15:09,745 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 04:15:09,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:15:09,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1594102493, now seen corresponding path program 5 times [2023-11-29 04:15:09,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:15:09,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36634562] [2023-11-29 04:15:09,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:09,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:15:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:11,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:15:11,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:15:11,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36634562] [2023-11-29 04:15:11,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36634562] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:15:11,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261070722] [2023-11-29 04:15:11,182 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 04:15:11,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:15:11,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:15:11,183 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:15:11,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:15:11,367 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:15:11,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:15:11,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-29 04:15:11,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:11,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2023-11-29 04:15:11,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 131 [2023-11-29 04:15:11,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 04:15:11,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 114 [2023-11-29 04:15:11,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 04:15:11,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2023-11-29 04:15:12,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2023-11-29 04:15:12,077 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:15:12,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 15 [2023-11-29 04:15:12,092 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:15:12,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:15:12,486 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:15:12,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 68 [2023-11-29 04:15:13,676 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:15:13,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 68 [2023-11-29 04:15:14,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-29 04:15:14,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2023-11-29 04:15:15,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-29 04:15:15,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2023-11-29 04:15:15,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-29 04:15:15,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 102 [2023-11-29 04:15:15,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-29 04:15:15,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2023-11-29 04:15:15,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 64 [2023-11-29 04:15:15,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 72 [2023-11-29 04:15:17,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:15:17,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261070722] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:15:17,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:15:17,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 29 [2023-11-29 04:15:17,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000208610] [2023-11-29 04:15:17,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:15:17,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 04:15:17,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:15:17,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 04:15:17,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=693, Unknown=0, NotChecked=0, Total=870 [2023-11-29 04:15:18,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2023-11-29 04:15:18,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 390 transitions, 5474 flow. Second operand has 30 states, 30 states have (on average 11.366666666666667) internal successors, (341), 30 states have internal predecessors, (341), 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) [2023-11-29 04:15:18,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:15:18,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2023-11-29 04:15:18,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:15:23,254 INFO L124 PetriNetUnfolderBase]: 3054/6247 cut-off events. [2023-11-29 04:15:23,254 INFO L125 PetriNetUnfolderBase]: For 106065/106065 co-relation queries the response was YES. [2023-11-29 04:15:23,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36119 conditions, 6247 events. 3054/6247 cut-off events. For 106065/106065 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 42994 event pairs, 408 based on Foata normal form. 34/6269 useless extension candidates. Maximal degree in co-relation 36038. Up to 3532 conditions per place. [2023-11-29 04:15:23,330 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 339 selfloop transitions, 132 changer transitions 6/482 dead transitions. [2023-11-29 04:15:23,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 482 transitions, 7326 flow [2023-11-29 04:15:23,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 04:15:23,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 04:15:23,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 271 transitions. [2023-11-29 04:15:23,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3528645833333333 [2023-11-29 04:15:23,332 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 271 transitions. [2023-11-29 04:15:23,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 271 transitions. [2023-11-29 04:15:23,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:15:23,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 271 transitions. [2023-11-29 04:15:23,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 16.9375) internal successors, (271), 16 states have internal predecessors, (271), 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) [2023-11-29 04:15:23,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 48.0) internal successors, (816), 17 states have internal predecessors, (816), 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) [2023-11-29 04:15:23,334 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 48.0) internal successors, (816), 17 states have internal predecessors, (816), 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) [2023-11-29 04:15:23,334 INFO L175 Difference]: Start difference. First operand has 211 places, 390 transitions, 5474 flow. Second operand 16 states and 271 transitions. [2023-11-29 04:15:23,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 482 transitions, 7326 flow [2023-11-29 04:15:23,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 482 transitions, 6162 flow, removed 507 selfloop flow, removed 16 redundant places. [2023-11-29 04:15:23,862 INFO L231 Difference]: Finished difference. Result has 215 places, 406 transitions, 5044 flow [2023-11-29 04:15:23,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4495, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5044, PETRI_PLACES=215, PETRI_TRANSITIONS=406} [2023-11-29 04:15:23,863 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 171 predicate places. [2023-11-29 04:15:23,863 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 406 transitions, 5044 flow [2023-11-29 04:15:23,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 11.366666666666667) internal successors, (341), 30 states have internal predecessors, (341), 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) [2023-11-29 04:15:23,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:15:23,864 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:15:23,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:15:24,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 04:15:24,064 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-29 04:15:24,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:15:24,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1944051095, now seen corresponding path program 1 times [2023-11-29 04:15:24,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:15:24,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822220114] [2023-11-29 04:15:24,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:24,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:15:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:15:24,097 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:15:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:15:24,156 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 04:15:24,157 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 04:15:24,157 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-11-29 04:15:24,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-11-29 04:15:24,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-11-29 04:15:24,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-11-29 04:15:24,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-11-29 04:15:24,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-11-29 04:15:24,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-11-29 04:15:24,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 04:15:24,160 INFO L445 BasicCegarLoop]: Path program histogram: [5, 5, 1, 1, 1, 1, 1, 1] [2023-11-29 04:15:24,165 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 04:15:24,165 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 04:15:24,211 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre65 could not be translated [2023-11-29 04:15:24,212 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre67 could not be translated [2023-11-29 04:15:24,215 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret57 could not be translated [2023-11-29 04:15:24,215 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet56 could not be translated [2023-11-29 04:15:24,215 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated [2023-11-29 04:15:24,216 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret61 could not be translated [2023-11-29 04:15:24,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 04:15:24 BasicIcfg [2023-11-29 04:15:24,226 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 04:15:24,227 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 04:15:24,227 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 04:15:24,227 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 04:15:24,227 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:13:53" (3/4) ... [2023-11-29 04:15:24,228 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-29 04:15:24,250 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre65 could not be translated [2023-11-29 04:15:24,251 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre67 could not be translated [2023-11-29 04:15:24,253 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet56 could not be translated [2023-11-29 04:15:24,253 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret57 could not be translated [2023-11-29 04:15:24,254 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret61 could not be translated [2023-11-29 04:15:24,254 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated [2023-11-29 04:15:24,296 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 04:15:24,297 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 04:15:24,297 INFO L158 Benchmark]: Toolchain (without parser) took 92065.41ms. Allocated memory was 161.5MB in the beginning and 662.7MB in the end (delta: 501.2MB). Free memory was 128.1MB in the beginning and 359.6MB in the end (delta: -231.5MB). Peak memory consumption was 269.4MB. Max. memory is 16.1GB. [2023-11-29 04:15:24,298 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 119.5MB. Free memory is still 92.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:15:24,298 INFO L158 Benchmark]: CACSL2BoogieTranslator took 565.93ms. Allocated memory is still 161.5MB. Free memory was 128.1MB in the beginning and 97.4MB in the end (delta: 30.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-29 04:15:24,299 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.38ms. Allocated memory is still 161.5MB. Free memory was 97.4MB in the beginning and 94.6MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 04:15:24,299 INFO L158 Benchmark]: Boogie Preprocessor took 78.65ms. Allocated memory is still 161.5MB. Free memory was 94.6MB in the beginning and 130.2MB in the end (delta: -35.6MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2023-11-29 04:15:24,299 INFO L158 Benchmark]: RCFGBuilder took 885.76ms. Allocated memory is still 161.5MB. Free memory was 130.2MB in the beginning and 53.8MB in the end (delta: 76.4MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. [2023-11-29 04:15:24,300 INFO L158 Benchmark]: TraceAbstraction took 90398.88ms. Allocated memory was 161.5MB in the beginning and 662.7MB in the end (delta: 501.2MB). Free memory was 52.8MB in the beginning and 371.1MB in the end (delta: -318.4MB). Peak memory consumption was 185.0MB. Max. memory is 16.1GB. [2023-11-29 04:15:24,300 INFO L158 Benchmark]: Witness Printer took 69.92ms. Allocated memory is still 662.7MB. Free memory was 371.1MB in the beginning and 359.6MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 04:15:24,302 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 119.5MB. Free memory is still 92.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 565.93ms. Allocated memory is still 161.5MB. Free memory was 128.1MB in the beginning and 97.4MB in the end (delta: 30.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.38ms. Allocated memory is still 161.5MB. Free memory was 97.4MB in the beginning and 94.6MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.65ms. Allocated memory is still 161.5MB. Free memory was 94.6MB in the beginning and 130.2MB in the end (delta: -35.6MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. * RCFGBuilder took 885.76ms. Allocated memory is still 161.5MB. Free memory was 130.2MB in the beginning and 53.8MB in the end (delta: 76.4MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. * TraceAbstraction took 90398.88ms. Allocated memory was 161.5MB in the beginning and 662.7MB in the end (delta: 501.2MB). Free memory was 52.8MB in the beginning and 371.1MB in the end (delta: -318.4MB). Peak memory consumption was 185.0MB. Max. memory is 16.1GB. * Witness Printer took 69.92ms. Allocated memory is still 662.7MB. Free memory was 371.1MB in the beginning and 359.6MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre65 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre67 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret57 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet56 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret61 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre65 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre67 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet56 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret57 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret61 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1043]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L949] 0 int stored_elements[(400)]; [L949] 0 int stored_elements[(400)]; [L950] 0 _Bool enqueue_flag, dequeue_flag; [L951] 0 QType queue; [L951] 0 QType queue; [L1054] 0 pthread_t id1, id2; [L1055] 0 enqueue_flag=(1) [L1056] 0 dequeue_flag=(0) [L1057] CALL 0 init(&queue) [L954] 0 q->head=0 [L955] 0 q->tail=0 [L956] 0 q->amount=0 [L1057] RET 0 init(&queue) [L1058] CALL, EXPR 0 empty(&queue) [L960] EXPR 0 q->head [L960] EXPR 0 q->tail [L960] COND TRUE 0 q->head == q->tail [L963] 0 return (-1); [L1058] RET, EXPR 0 empty(&queue) [L1058] COND FALSE 0 !(!empty(&queue)==(-1)) [L1062] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, &queue) VAL [dequeue_flag=0, enqueue_flag=1, id1={7:0}, id2={6:0}, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1007] 1 int value, i; VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1063] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, &queue) VAL [dequeue_flag=0, enqueue_flag=1, id1={7:0}, id2={6:0}, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1036] 2 int i; [L1037] 2 i=0 VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1037] COND TRUE 2 i<(400) VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1040] COND FALSE 2 !(\read(dequeue_flag)) VAL [dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1037] 2 i++ VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1009] 1 value = __VERIFIER_nondet_int() [L1010] CALL 1 enqueue(&queue,value) [L980] EXPR 1 q->tail [L980] 1 q->element[q->tail] = x [L981] EXPR 1 q->amount [L981] 1 q->amount++ [L981] 1 q->amount++ [L982] EXPR 1 q->tail [L982] COND FALSE 1 !(q->tail == (400)) [L988] EXPR 1 q->tail [L988] 1 q->tail++ [L988] 1 q->tail++ [L990] 1 return 0; [L1010] RET 1 enqueue(&queue,value) [L1010] COND FALSE 1 !(enqueue(&queue,value)) [L1013] 1 stored_elements[0]=value [L1014] CALL 1 empty(&queue) [L960] EXPR 1 q->head [L960] EXPR 1 q->tail [L960] COND FALSE 1 !(q->head == q->tail) [L966] 1 return 0; [L1014] RET 1 empty(&queue) [L1014] COND FALSE 1 !(empty(&queue)) [L1018] 1 i=0 VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=0] [L1018] COND TRUE 1 i<((400)-1) VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=0] [L1021] COND TRUE 1 \read(enqueue_flag) [L1023] 1 value = __VERIFIER_nondet_int() [L1024] CALL 1 enqueue(&queue,value) [L980] EXPR 1 q->tail [L980] 1 q->element[q->tail] = x [L981] EXPR 1 q->amount [L981] 1 q->amount++ [L981] 1 q->amount++ [L982] EXPR 1 q->tail [L982] COND FALSE 1 !(q->tail == (400)) [L988] EXPR 1 q->tail [L988] 1 q->tail++ [L988] 1 q->tail++ [L990] 1 return 0; [L1024] RET 1 enqueue(&queue,value) [L1025] 1 stored_elements[i+1]=value [L1026] 1 enqueue_flag=(0) [L1027] 1 dequeue_flag=(1) VAL [arg={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=1] [L1037] COND TRUE 2 i<(400) VAL [arg={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1040] COND TRUE 2 \read(dequeue_flag) [L1042] CALL, EXPR 2 dequeue(&queue) [L994] 2 int x; [L995] EXPR 2 q->head [L995] EXPR 2 q->element[q->head] [L995] 2 x = q->element[q->head] [L996] EXPR 2 q->amount [L996] 2 q->amount-- [L996] 2 q->amount-- [L997] EXPR 2 q->head [L997] COND FALSE 2 !(q->head == (400)) [L1002] EXPR 2 q->head [L1002] 2 q->head++ [L1002] 2 q->head++ [L1003] 2 return x; [L1042] RET, EXPR 2 dequeue(&queue) [L1042] EXPR 2 stored_elements[i] VAL [arg={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1042] COND TRUE 2 !dequeue(&queue)==stored_elements[i] [L1043] 2 reach_error() VAL [arg={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] - UnprovableResult [Line: 1059]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 72 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 90.2s, OverallIterations: 16, TraceHistogramMax: 2, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 40.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1993 SdHoareTripleChecker+Valid, 24.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1946 mSDsluCounter, 1192 SdHoareTripleChecker+Invalid, 23.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1166 mSDsCounter, 170 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9307 IncrementalHoareTripleChecker+Invalid, 9477 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 170 mSolverCounterUnsat, 26 mSDtfsCounter, 9307 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 454 GetRequests, 201 SyntacticMatches, 2 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2733 ImplicationChecksByTransitivity, 20.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5474occurred in iteration=14, InterpolantAutomatonStates: 182, 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: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 46.5s InterpolantComputationTime, 498 NumberOfCodeBlocks, 498 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 588 ConstructedInterpolants, 107 QuantifiedInterpolants, 102578 SizeOfPredicates, 179 NumberOfNonLiveVariables, 1400 ConjunctsInSsa, 253 ConjunctsInUnsatCore, 25 InterpolantComputations, 10 PerfectInterpolantSequences, 0/60 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-29 04:15:24,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_234ded65-2a5c-4c58-8b89-041286fd00b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE