./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/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_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/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_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/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 37731ec014f4053387ac8b56c0764486866d63670c206743514c9636df9b594a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:57:59,646 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:57:59,710 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:57:59,714 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:57:59,715 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:57:59,739 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:57:59,739 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:57:59,740 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:57:59,741 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:57:59,741 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:57:59,742 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:57:59,742 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:57:59,743 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:57:59,743 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:57:59,744 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:57:59,744 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:57:59,745 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:57:59,745 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:57:59,746 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:57:59,746 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:57:59,747 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:57:59,750 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:57:59,751 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:57:59,751 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:57:59,751 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:57:59,752 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:57:59,752 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:57:59,753 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:57:59,753 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:57:59,753 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:57:59,754 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:57:59,754 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:57:59,754 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:57:59,755 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:57:59,755 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:57:59,755 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:57:59,755 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:57:59,755 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:57:59,755 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:57:59,756 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:57:59,756 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:57:59,756 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:57:59,756 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_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37731ec014f4053387ac8b56c0764486866d63670c206743514c9636df9b594a [2023-11-29 05:57:59,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:58:00,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:58:00,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:58:00,013 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:58:00,013 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:58:00,014 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2023-11-29 05:58:02,799 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:58:02,976 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:58:02,977 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2023-11-29 05:58:02,985 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/data/6d9313b0e/97adb3528361485bb32c37c83c7aba78/FLAG0d6f34b09 [2023-11-29 05:58:02,999 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/data/6d9313b0e/97adb3528361485bb32c37c83c7aba78 [2023-11-29 05:58:03,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:58:03,003 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:58:03,004 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:58:03,004 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:58:03,010 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:58:03,010 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:58:03" (1/1) ... [2023-11-29 05:58:03,011 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c19dd73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:03, skipping insertion in model container [2023-11-29 05:58:03,012 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:58:03" (1/1) ... [2023-11-29 05:58:03,037 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:58:03,211 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_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c[2435,2448] [2023-11-29 05:58:03,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:58:03,231 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:58:03,253 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_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c[2435,2448] [2023-11-29 05:58:03,257 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:58:03,273 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:58:03,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:03 WrapperNode [2023-11-29 05:58:03,274 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:58:03,275 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:58:03,275 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:58:03,275 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:58:03,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:03" (1/1) ... [2023-11-29 05:58:03,291 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:03" (1/1) ... [2023-11-29 05:58:03,314 INFO L138 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 105 [2023-11-29 05:58:03,315 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:58:03,316 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:58:03,316 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:58:03,316 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:58:03,327 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:03" (1/1) ... [2023-11-29 05:58:03,328 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:03" (1/1) ... [2023-11-29 05:58:03,331 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:03" (1/1) ... [2023-11-29 05:58:03,348 INFO L175 MemorySlicer]: Split 12 memory accesses to 5 slices as follows [2, 2, 2, 2, 4]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-29 05:58:03,348 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:03" (1/1) ... [2023-11-29 05:58:03,348 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:03" (1/1) ... [2023-11-29 05:58:03,356 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:03" (1/1) ... [2023-11-29 05:58:03,360 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:03" (1/1) ... [2023-11-29 05:58:03,362 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:03" (1/1) ... [2023-11-29 05:58:03,363 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:03" (1/1) ... [2023-11-29 05:58:03,367 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:58:03,368 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:58:03,368 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:58:03,368 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:58:03,369 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:03" (1/1) ... [2023-11-29 05:58:03,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:58:03,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:03,399 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:58:03,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:58:03,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:58:03,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:58:03,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 05:58:03,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 05:58:03,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 05:58:03,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 05:58:03,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 05:58:03,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 05:58:03,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 05:58:03,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 05:58:03,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 05:58:03,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 05:58:03,443 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 05:58:03,443 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 05:58:03,443 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 05:58:03,444 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 05:58:03,444 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 05:58:03,444 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 05:58:03,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:58:03,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 05:58:03,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 05:58:03,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 05:58:03,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 05:58:03,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 05:58:03,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:58:03,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:58:03,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:58:03,447 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 05:58:03,563 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:58:03,565 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:58:03,787 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:58:04,029 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:58:04,029 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 05:58:04,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:58:04 BoogieIcfgContainer [2023-11-29 05:58:04,030 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:58:04,032 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:58:04,033 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:58:04,035 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:58:04,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:58:03" (1/3) ... [2023-11-29 05:58:04,036 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@839543c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:58:04, skipping insertion in model container [2023-11-29 05:58:04,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:03" (2/3) ... [2023-11-29 05:58:04,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@839543c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:58:04, skipping insertion in model container [2023-11-29 05:58:04,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:58:04" (3/3) ... [2023-11-29 05:58:04,038 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2023-11-29 05:58:04,046 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 05:58:04,054 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:58:04,054 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:58:04,054 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 05:58:04,101 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 05:58:04,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 29 transitions, 79 flow [2023-11-29 05:58:04,160 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2023-11-29 05:58:04,160 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 05:58:04,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 26 events. 4/26 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2023-11-29 05:58:04,164 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 29 transitions, 79 flow [2023-11-29 05:58:04,167 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 25 transitions, 68 flow [2023-11-29 05:58:04,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:58:04,182 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;@6ae42522, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:58:04,182 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-29 05:58:04,194 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:58:04,194 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2023-11-29 05:58:04,195 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 05:58:04,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:04,195 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] [2023-11-29 05:58:04,196 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 1 more)] === [2023-11-29 05:58:04,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:04,201 INFO L85 PathProgramCache]: Analyzing trace with hash -162002281, now seen corresponding path program 1 times [2023-11-29 05:58:04,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:04,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362502757] [2023-11-29 05:58:04,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:04,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:04,747 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 05:58:04,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:04,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362502757] [2023-11-29 05:58:04,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362502757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:58:04,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:58:04,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:58:04,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687266693] [2023-11-29 05:58:04,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:58:04,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:58:04,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:04,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:58:04,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:58:04,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:58:04,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 05:58:04,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:04,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:58:04,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:04,967 INFO L124 PetriNetUnfolderBase]: 429/633 cut-off events. [2023-11-29 05:58:04,968 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-11-29 05:58:04,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1342 conditions, 633 events. 429/633 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2011 event pairs, 138 based on Foata normal form. 1/469 useless extension candidates. Maximal degree in co-relation 1030. Up to 389 conditions per place. [2023-11-29 05:58:04,977 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 38 selfloop transitions, 4 changer transitions 1/44 dead transitions. [2023-11-29 05:58:04,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 44 transitions, 207 flow [2023-11-29 05:58:04,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:58:04,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:58:04,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2023-11-29 05:58:04,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6436781609195402 [2023-11-29 05:58:04,987 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 56 transitions. [2023-11-29 05:58:04,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 56 transitions. [2023-11-29 05:58:04,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:04,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 56 transitions. [2023-11-29 05:58:04,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 05:58:04,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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 05:58:04,995 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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 05:58:04,997 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 68 flow. Second operand 3 states and 56 transitions. [2023-11-29 05:58:04,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 44 transitions, 207 flow [2023-11-29 05:58:05,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 44 transitions, 185 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 05:58:05,004 INFO L231 Difference]: Finished difference. Result has 28 places, 28 transitions, 82 flow [2023-11-29 05:58:05,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=28, PETRI_TRANSITIONS=28} [2023-11-29 05:58:05,008 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2023-11-29 05:58:05,009 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 28 transitions, 82 flow [2023-11-29 05:58:05,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 05:58:05,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:05,010 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] [2023-11-29 05:58:05,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:58:05,010 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:58:05,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:05,011 INFO L85 PathProgramCache]: Analyzing trace with hash -547139391, now seen corresponding path program 1 times [2023-11-29 05:58:05,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:05,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304684410] [2023-11-29 05:58:05,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:05,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:05,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:05,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:05,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304684410] [2023-11-29 05:58:05,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304684410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:58:05,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:58:05,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:58:05,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406966549] [2023-11-29 05:58:05,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:58:05,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:58:05,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:05,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:58:05,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:58:05,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:58:05,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 28 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 05:58:05,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:05,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:58:05,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:05,394 INFO L124 PetriNetUnfolderBase]: 785/1179 cut-off events. [2023-11-29 05:58:05,394 INFO L125 PetriNetUnfolderBase]: For 240/240 co-relation queries the response was YES. [2023-11-29 05:58:05,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2819 conditions, 1179 events. 785/1179 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4365 event pairs, 457 based on Foata normal form. 46/1223 useless extension candidates. Maximal degree in co-relation 998. Up to 633 conditions per place. [2023-11-29 05:58:05,405 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 59 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2023-11-29 05:58:05,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 65 transitions, 314 flow [2023-11-29 05:58:05,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:58:05,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:58:05,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2023-11-29 05:58:05,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379310344827586 [2023-11-29 05:58:05,407 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 78 transitions. [2023-11-29 05:58:05,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 78 transitions. [2023-11-29 05:58:05,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:05,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 78 transitions. [2023-11-29 05:58:05,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 05:58:05,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 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 05:58:05,410 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 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 05:58:05,410 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 82 flow. Second operand 5 states and 78 transitions. [2023-11-29 05:58:05,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 65 transitions, 314 flow [2023-11-29 05:58:05,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 65 transitions, 306 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:58:05,414 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 116 flow [2023-11-29 05:58:05,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-11-29 05:58:05,415 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2023-11-29 05:58:05,415 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 116 flow [2023-11-29 05:58:05,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 05:58:05,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:05,415 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] [2023-11-29 05:58:05,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:58:05,416 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:58:05,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:05,416 INFO L85 PathProgramCache]: Analyzing trace with hash 217509826, now seen corresponding path program 1 times [2023-11-29 05:58:05,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:05,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228005996] [2023-11-29 05:58:05,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:05,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:05,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:05,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:05,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228005996] [2023-11-29 05:58:05,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228005996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:58:05,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:58:05,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:58:05,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569721744] [2023-11-29 05:58:05,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:58:05,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:58:05,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:05,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:58:05,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:58:05,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:58:05,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 05:58:05,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:05,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:58:05,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:05,790 INFO L124 PetriNetUnfolderBase]: 683/1047 cut-off events. [2023-11-29 05:58:05,790 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-11-29 05:58:05,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2663 conditions, 1047 events. 683/1047 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3896 event pairs, 417 based on Foata normal form. 46/1092 useless extension candidates. Maximal degree in co-relation 1603. Up to 633 conditions per place. [2023-11-29 05:58:05,797 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 55 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2023-11-29 05:58:05,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 61 transitions, 320 flow [2023-11-29 05:58:05,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:58:05,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:58:05,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2023-11-29 05:58:05,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5241379310344828 [2023-11-29 05:58:05,799 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 76 transitions. [2023-11-29 05:58:05,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 76 transitions. [2023-11-29 05:58:05,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:05,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 76 transitions. [2023-11-29 05:58:05,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.2) internal successors, (76), 5 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 05:58:05,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 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 05:58:05,802 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 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 05:58:05,802 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 116 flow. Second operand 5 states and 76 transitions. [2023-11-29 05:58:05,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 61 transitions, 320 flow [2023-11-29 05:58:05,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 61 transitions, 316 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 05:58:05,805 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 139 flow [2023-11-29 05:58:05,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=139, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2023-11-29 05:58:05,806 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2023-11-29 05:58:05,806 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 139 flow [2023-11-29 05:58:05,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 05:58:05,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:05,807 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] [2023-11-29 05:58:05,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:58:05,807 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:58:05,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:05,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1563564485, now seen corresponding path program 1 times [2023-11-29 05:58:05,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:05,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376570934] [2023-11-29 05:58:05,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:05,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:05,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:05,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:05,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376570934] [2023-11-29 05:58:05,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376570934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:58:05,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:58:05,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:58:05,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184731184] [2023-11-29 05:58:05,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:58:05,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:58:05,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:05,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:58:05,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:58:05,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:58:05,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 05:58:05,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:05,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:58:05,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:06,108 INFO L124 PetriNetUnfolderBase]: 567/876 cut-off events. [2023-11-29 05:58:06,109 INFO L125 PetriNetUnfolderBase]: For 842/842 co-relation queries the response was YES. [2023-11-29 05:58:06,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2520 conditions, 876 events. 567/876 cut-off events. For 842/842 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3128 event pairs, 369 based on Foata normal form. 26/901 useless extension candidates. Maximal degree in co-relation 1779. Up to 633 conditions per place. [2023-11-29 05:58:06,115 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 26 selfloop transitions, 2 changer transitions 27/56 dead transitions. [2023-11-29 05:58:06,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 56 transitions, 317 flow [2023-11-29 05:58:06,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:58:06,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:58:06,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 73 transitions. [2023-11-29 05:58:06,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503448275862069 [2023-11-29 05:58:06,117 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 73 transitions. [2023-11-29 05:58:06,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 73 transitions. [2023-11-29 05:58:06,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:06,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 73 transitions. [2023-11-29 05:58:06,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 14.6) internal successors, (73), 5 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 05:58:06,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 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 05:58:06,119 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 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 05:58:06,119 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 139 flow. Second operand 5 states and 73 transitions. [2023-11-29 05:58:06,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 56 transitions, 317 flow [2023-11-29 05:58:06,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 56 transitions, 312 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:58:06,124 INFO L231 Difference]: Finished difference. Result has 43 places, 29 transitions, 112 flow [2023-11-29 05:58:06,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=43, PETRI_TRANSITIONS=29} [2023-11-29 05:58:06,125 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2023-11-29 05:58:06,125 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 112 flow [2023-11-29 05:58:06,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 05:58:06,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:06,126 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 05:58:06,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 05:58:06,126 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:58:06,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:06,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1540334460, now seen corresponding path program 1 times [2023-11-29 05:58:06,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:06,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075294594] [2023-11-29 05:58:06,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:06,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:06,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:06,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:06,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075294594] [2023-11-29 05:58:06,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075294594] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:06,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637179380] [2023-11-29 05:58:06,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:06,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:06,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:06,291 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:06,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:58:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:06,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:58:06,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:06,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:06,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:06,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:06,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637179380] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:06,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:58:06,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2023-11-29 05:58:06,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376125158] [2023-11-29 05:58:06,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:58:06,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:58:06,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:06,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:58:06,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:58:06,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:58:06,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 29 transitions, 112 flow. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 05:58:06,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:06,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:58:06,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:06,894 INFO L124 PetriNetUnfolderBase]: 578/862 cut-off events. [2023-11-29 05:58:06,895 INFO L125 PetriNetUnfolderBase]: For 788/788 co-relation queries the response was YES. [2023-11-29 05:58:06,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2612 conditions, 862 events. 578/862 cut-off events. For 788/788 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3014 event pairs, 166 based on Foata normal form. 18/879 useless extension candidates. Maximal degree in co-relation 2593. Up to 421 conditions per place. [2023-11-29 05:58:06,903 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 62 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2023-11-29 05:58:06,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 72 transitions, 418 flow [2023-11-29 05:58:06,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:58:06,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:58:06,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2023-11-29 05:58:06,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4482758620689655 [2023-11-29 05:58:06,905 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 91 transitions. [2023-11-29 05:58:06,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 91 transitions. [2023-11-29 05:58:06,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:06,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 91 transitions. [2023-11-29 05:58:06,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 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 05:58:06,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 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 05:58:06,907 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 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 05:58:06,907 INFO L175 Difference]: Start difference. First operand has 43 places, 29 transitions, 112 flow. Second operand 7 states and 91 transitions. [2023-11-29 05:58:06,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 72 transitions, 418 flow [2023-11-29 05:58:06,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 72 transitions, 350 flow, removed 32 selfloop flow, removed 8 redundant places. [2023-11-29 05:58:06,916 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 143 flow [2023-11-29 05:58:06,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=143, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2023-11-29 05:58:06,917 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2023-11-29 05:58:06,918 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 143 flow [2023-11-29 05:58:06,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 05:58:06,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:06,918 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 05:58:06,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:58:07,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:07,119 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:58:07,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:07,119 INFO L85 PathProgramCache]: Analyzing trace with hash 186307246, now seen corresponding path program 2 times [2023-11-29 05:58:07,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:07,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734379727] [2023-11-29 05:58:07,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:07,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:07,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:07,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:07,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734379727] [2023-11-29 05:58:07,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734379727] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:07,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970037394] [2023-11-29 05:58:07,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:58:07,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:07,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:07,255 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:07,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:58:07,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:58:07,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:58:07,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:58:07,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:07,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:07,459 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:07,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:07,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970037394] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:07,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:58:07,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2023-11-29 05:58:07,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336199197] [2023-11-29 05:58:07,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:58:07,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:58:07,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:07,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:58:07,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:58:07,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:58:07,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 143 flow. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 05:58:07,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:07,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:58:07,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:07,776 INFO L124 PetriNetUnfolderBase]: 765/1145 cut-off events. [2023-11-29 05:58:07,776 INFO L125 PetriNetUnfolderBase]: For 1108/1108 co-relation queries the response was YES. [2023-11-29 05:58:07,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3475 conditions, 1145 events. 765/1145 cut-off events. For 1108/1108 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4297 event pairs, 264 based on Foata normal form. 14/1158 useless extension candidates. Maximal degree in co-relation 3453. Up to 665 conditions per place. [2023-11-29 05:58:07,784 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 64 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2023-11-29 05:58:07,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 77 transitions, 463 flow [2023-11-29 05:58:07,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:58:07,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:58:07,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2023-11-29 05:58:07,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-11-29 05:58:07,786 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 87 transitions. [2023-11-29 05:58:07,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 87 transitions. [2023-11-29 05:58:07,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:07,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 87 transitions. [2023-11-29 05:58:07,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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 05:58:07,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 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 05:58:07,788 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 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 05:58:07,788 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 143 flow. Second operand 7 states and 87 transitions. [2023-11-29 05:58:07,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 77 transitions, 463 flow [2023-11-29 05:58:07,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 77 transitions, 428 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-11-29 05:58:07,792 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 200 flow [2023-11-29 05:58:07,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=200, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-11-29 05:58:07,793 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2023-11-29 05:58:07,793 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 200 flow [2023-11-29 05:58:07,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 05:58:07,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:07,794 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 05:58:07,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:58:07,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:07,995 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:58:07,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:07,996 INFO L85 PathProgramCache]: Analyzing trace with hash 931640946, now seen corresponding path program 3 times [2023-11-29 05:58:07,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:07,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608290930] [2023-11-29 05:58:07,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:07,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:08,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:08,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:08,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608290930] [2023-11-29 05:58:08,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608290930] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:08,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410464169] [2023-11-29 05:58:08,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:58:08,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:08,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:08,157 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:08,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:58:08,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 05:58:08,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:58:08,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:58:08,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:08,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:08,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:08,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:08,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410464169] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:08,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:58:08,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 14 [2023-11-29 05:58:08,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938107616] [2023-11-29 05:58:08,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:58:08,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:58:08,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:08,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:58:08,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:58:08,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:58:08,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 200 flow. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 05:58:08,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:08,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:58:08,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:08,786 INFO L124 PetriNetUnfolderBase]: 887/1335 cut-off events. [2023-11-29 05:58:08,786 INFO L125 PetriNetUnfolderBase]: For 2424/2424 co-relation queries the response was YES. [2023-11-29 05:58:08,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4692 conditions, 1335 events. 887/1335 cut-off events. For 2424/2424 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5181 event pairs, 362 based on Foata normal form. 18/1352 useless extension candidates. Maximal degree in co-relation 4667. Up to 942 conditions per place. [2023-11-29 05:58:08,799 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 62 selfloop transitions, 17 changer transitions 0/80 dead transitions. [2023-11-29 05:58:08,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 80 transitions, 543 flow [2023-11-29 05:58:08,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:58:08,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:58:08,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2023-11-29 05:58:08,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43349753694581283 [2023-11-29 05:58:08,801 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 88 transitions. [2023-11-29 05:58:08,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 88 transitions. [2023-11-29 05:58:08,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:08,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 88 transitions. [2023-11-29 05:58:08,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 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 05:58:08,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 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 05:58:08,803 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 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 05:58:08,803 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 200 flow. Second operand 7 states and 88 transitions. [2023-11-29 05:58:08,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 80 transitions, 543 flow [2023-11-29 05:58:08,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 80 transitions, 502 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-11-29 05:58:08,810 INFO L231 Difference]: Finished difference. Result has 50 places, 47 transitions, 297 flow [2023-11-29 05:58:08,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=297, PETRI_PLACES=50, PETRI_TRANSITIONS=47} [2023-11-29 05:58:08,811 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2023-11-29 05:58:08,811 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 47 transitions, 297 flow [2023-11-29 05:58:08,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 05:58:08,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:08,812 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 05:58:08,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:58:09,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:09,013 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:58:09,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:09,013 INFO L85 PathProgramCache]: Analyzing trace with hash -320070162, now seen corresponding path program 4 times [2023-11-29 05:58:09,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:09,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603128948] [2023-11-29 05:58:09,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:09,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:09,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:09,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:09,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603128948] [2023-11-29 05:58:09,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603128948] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:09,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938655453] [2023-11-29 05:58:09,163 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:58:09,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:09,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:09,164 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:09,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:58:09,253 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:58:09,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:58:09,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:58:09,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:09,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:09,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:09,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:09,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938655453] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:09,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:09,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-29 05:58:09,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726417958] [2023-11-29 05:58:09,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:09,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 05:58:09,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:09,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 05:58:09,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:58:09,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:58:09,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 47 transitions, 297 flow. Second operand has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 14 states have internal predecessors, (93), 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 05:58:09,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:09,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:58:09,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:10,106 INFO L124 PetriNetUnfolderBase]: 869/1317 cut-off events. [2023-11-29 05:58:10,106 INFO L125 PetriNetUnfolderBase]: For 3579/3579 co-relation queries the response was YES. [2023-11-29 05:58:10,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5099 conditions, 1317 events. 869/1317 cut-off events. For 3579/3579 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5320 event pairs, 166 based on Foata normal form. 18/1334 useless extension candidates. Maximal degree in co-relation 5071. Up to 459 conditions per place. [2023-11-29 05:58:10,120 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 104 selfloop transitions, 71 changer transitions 0/176 dead transitions. [2023-11-29 05:58:10,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 176 transitions, 1384 flow [2023-11-29 05:58:10,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:58:10,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 05:58:10,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 194 transitions. [2023-11-29 05:58:10,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716475095785441 [2023-11-29 05:58:10,122 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 194 transitions. [2023-11-29 05:58:10,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 194 transitions. [2023-11-29 05:58:10,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:10,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 194 transitions. [2023-11-29 05:58:10,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 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 05:58:10,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 29.0) internal successors, (551), 19 states have internal predecessors, (551), 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 05:58:10,125 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 29.0) internal successors, (551), 19 states have internal predecessors, (551), 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 05:58:10,125 INFO L175 Difference]: Start difference. First operand has 50 places, 47 transitions, 297 flow. Second operand 18 states and 194 transitions. [2023-11-29 05:58:10,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 176 transitions, 1384 flow [2023-11-29 05:58:10,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 176 transitions, 1264 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-11-29 05:58:10,138 INFO L231 Difference]: Finished difference. Result has 65 places, 101 transitions, 834 flow [2023-11-29 05:58:10,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=834, PETRI_PLACES=65, PETRI_TRANSITIONS=101} [2023-11-29 05:58:10,139 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 34 predicate places. [2023-11-29 05:58:10,139 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 101 transitions, 834 flow [2023-11-29 05:58:10,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 14 states have internal predecessors, (93), 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 05:58:10,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:10,139 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 05:58:10,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:58:10,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 05:58:10,342 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:58:10,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:10,342 INFO L85 PathProgramCache]: Analyzing trace with hash -281114734, now seen corresponding path program 5 times [2023-11-29 05:58:10,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:10,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052064905] [2023-11-29 05:58:10,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:10,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:10,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:10,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:10,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052064905] [2023-11-29 05:58:10,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052064905] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:10,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355306962] [2023-11-29 05:58:10,508 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 05:58:10,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:10,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:10,509 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:10,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:58:10,629 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:58:10,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:58:10,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:58:10,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:10,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:10,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:10,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:10,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355306962] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:10,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:10,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-29 05:58:10,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72763750] [2023-11-29 05:58:10,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:10,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 05:58:10,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:10,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 05:58:10,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:58:10,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:58:10,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 101 transitions, 834 flow. Second operand has 15 states, 15 states have (on average 7.066666666666666) internal successors, (106), 15 states have internal predecessors, (106), 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 05:58:10,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:10,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:58:10,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:11,421 INFO L124 PetriNetUnfolderBase]: 850/1276 cut-off events. [2023-11-29 05:58:11,421 INFO L125 PetriNetUnfolderBase]: For 3790/3790 co-relation queries the response was YES. [2023-11-29 05:58:11,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5458 conditions, 1276 events. 850/1276 cut-off events. For 3790/3790 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4994 event pairs, 208 based on Foata normal form. 14/1290 useless extension candidates. Maximal degree in co-relation 5427. Up to 622 conditions per place. [2023-11-29 05:58:11,431 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 86 selfloop transitions, 75 changer transitions 0/162 dead transitions. [2023-11-29 05:58:11,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 162 transitions, 1407 flow [2023-11-29 05:58:11,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 05:58:11,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 05:58:11,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 150 transitions. [2023-11-29 05:58:11,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3694581280788177 [2023-11-29 05:58:11,433 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 150 transitions. [2023-11-29 05:58:11,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 150 transitions. [2023-11-29 05:58:11,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:11,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 150 transitions. [2023-11-29 05:58:11,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 10.714285714285714) internal successors, (150), 14 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:58:11,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 29.0) internal successors, (435), 15 states have internal predecessors, (435), 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 05:58:11,435 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 29.0) internal successors, (435), 15 states have internal predecessors, (435), 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 05:58:11,435 INFO L175 Difference]: Start difference. First operand has 65 places, 101 transitions, 834 flow. Second operand 14 states and 150 transitions. [2023-11-29 05:58:11,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 162 transitions, 1407 flow [2023-11-29 05:58:11,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 162 transitions, 1272 flow, removed 42 selfloop flow, removed 4 redundant places. [2023-11-29 05:58:11,448 INFO L231 Difference]: Finished difference. Result has 76 places, 119 transitions, 987 flow [2023-11-29 05:58:11,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=987, PETRI_PLACES=76, PETRI_TRANSITIONS=119} [2023-11-29 05:58:11,449 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2023-11-29 05:58:11,449 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 119 transitions, 987 flow [2023-11-29 05:58:11,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.066666666666666) internal successors, (106), 15 states have internal predecessors, (106), 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 05:58:11,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:11,450 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 05:58:11,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:58:11,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:11,651 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:58:11,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:11,651 INFO L85 PathProgramCache]: Analyzing trace with hash 367091962, now seen corresponding path program 6 times [2023-11-29 05:58:11,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:11,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767068279] [2023-11-29 05:58:11,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:11,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:11,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:11,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:11,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767068279] [2023-11-29 05:58:11,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767068279] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:11,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109497519] [2023-11-29 05:58:11,817 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 05:58:11,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:11,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:11,818 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:11,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:58:11,916 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 05:58:11,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:58:11,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:58:11,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:11,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:11,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:12,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:12,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109497519] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:12,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:58:12,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2023-11-29 05:58:12,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073192884] [2023-11-29 05:58:12,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:58:12,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:58:12,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:12,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:58:12,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:58:12,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:58:12,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 119 transitions, 987 flow. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 05:58:12,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:12,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:58:12,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:12,346 INFO L124 PetriNetUnfolderBase]: 831/1235 cut-off events. [2023-11-29 05:58:12,346 INFO L125 PetriNetUnfolderBase]: For 4002/4002 co-relation queries the response was YES. [2023-11-29 05:58:12,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5490 conditions, 1235 events. 831/1235 cut-off events. For 4002/4002 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4695 event pairs, 214 based on Foata normal form. 14/1249 useless extension candidates. Maximal degree in co-relation 5455. Up to 697 conditions per place. [2023-11-29 05:58:12,358 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 89 selfloop transitions, 50 changer transitions 0/140 dead transitions. [2023-11-29 05:58:12,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 140 transitions, 1311 flow [2023-11-29 05:58:12,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:58:12,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:58:12,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2023-11-29 05:58:12,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43349753694581283 [2023-11-29 05:58:12,360 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 88 transitions. [2023-11-29 05:58:12,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 88 transitions. [2023-11-29 05:58:12,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:12,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 88 transitions. [2023-11-29 05:58:12,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 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 05:58:12,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 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 05:58:12,362 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 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 05:58:12,362 INFO L175 Difference]: Start difference. First operand has 76 places, 119 transitions, 987 flow. Second operand 7 states and 88 transitions. [2023-11-29 05:58:12,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 140 transitions, 1311 flow [2023-11-29 05:58:12,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 140 transitions, 1228 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-11-29 05:58:12,378 INFO L231 Difference]: Finished difference. Result has 74 places, 115 transitions, 968 flow [2023-11-29 05:58:12,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=968, PETRI_PLACES=74, PETRI_TRANSITIONS=115} [2023-11-29 05:58:12,379 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 43 predicate places. [2023-11-29 05:58:12,379 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 115 transitions, 968 flow [2023-11-29 05:58:12,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 05:58:12,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:12,380 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 05:58:12,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:58:12,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 05:58:12,582 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:58:12,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:12,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1927602163, now seen corresponding path program 1 times [2023-11-29 05:58:12,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:12,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935034550] [2023-11-29 05:58:12,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:12,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:12,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:12,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:12,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935034550] [2023-11-29 05:58:12,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935034550] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:12,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586439778] [2023-11-29 05:58:12,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:12,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:12,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:12,693 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:12,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:58:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:12,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:58:12,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:12,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:12,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:12,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:12,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586439778] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:12,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:58:12,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-11-29 05:58:12,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393918620] [2023-11-29 05:58:12,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:58:12,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:58:12,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:12,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:58:12,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:58:12,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:58:12,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 115 transitions, 968 flow. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 05:58:12,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:12,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:58:12,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:13,029 INFO L124 PetriNetUnfolderBase]: 788/1160 cut-off events. [2023-11-29 05:58:13,029 INFO L125 PetriNetUnfolderBase]: For 3858/3858 co-relation queries the response was YES. [2023-11-29 05:58:13,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5031 conditions, 1160 events. 788/1160 cut-off events. For 3858/3858 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4208 event pairs, 242 based on Foata normal form. 70/1230 useless extension candidates. Maximal degree in co-relation 4996. Up to 923 conditions per place. [2023-11-29 05:58:13,037 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 124 selfloop transitions, 14 changer transitions 0/139 dead transitions. [2023-11-29 05:58:13,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 139 transitions, 1434 flow [2023-11-29 05:58:13,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:58:13,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:58:13,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2023-11-29 05:58:13,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2023-11-29 05:58:13,038 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 58 transitions. [2023-11-29 05:58:13,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 58 transitions. [2023-11-29 05:58:13,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:13,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 58 transitions. [2023-11-29 05:58:13,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 05:58:13,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 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 05:58:13,039 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 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 05:58:13,039 INFO L175 Difference]: Start difference. First operand has 74 places, 115 transitions, 968 flow. Second operand 5 states and 58 transitions. [2023-11-29 05:58:13,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 139 transitions, 1434 flow [2023-11-29 05:58:13,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 139 transitions, 1312 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-11-29 05:58:13,051 INFO L231 Difference]: Finished difference. Result has 73 places, 116 transitions, 926 flow [2023-11-29 05:58:13,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=926, PETRI_PLACES=73, PETRI_TRANSITIONS=116} [2023-11-29 05:58:13,052 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 42 predicate places. [2023-11-29 05:58:13,052 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 116 transitions, 926 flow [2023-11-29 05:58:13,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 05:58:13,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:13,052 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 05:58:13,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 05:58:13,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 05:58:13,253 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:58:13,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:13,253 INFO L85 PathProgramCache]: Analyzing trace with hash 171998528, now seen corresponding path program 1 times [2023-11-29 05:58:13,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:13,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364215667] [2023-11-29 05:58:13,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:13,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:14,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:14,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:14,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364215667] [2023-11-29 05:58:14,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364215667] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:14,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868452730] [2023-11-29 05:58:14,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:14,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:14,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:14,096 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:14,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:58:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:14,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 05:58:14,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:14,298 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 15 treesize of output 1 [2023-11-29 05:58:14,661 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 7 [2023-11-29 05:58:14,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:14,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:15,153 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 38 treesize of output 34 [2023-11-29 05:58:15,174 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:58:15,174 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 86 [2023-11-29 05:58:16,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:16,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868452730] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:16,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:16,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-11-29 05:58:16,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613288755] [2023-11-29 05:58:16,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:16,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 05:58:16,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:16,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 05:58:16,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2023-11-29 05:58:16,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:58:16,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 116 transitions, 926 flow. Second operand has 23 states, 23 states have (on average 7.0) internal successors, (161), 23 states have internal predecessors, (161), 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 05:58:16,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:16,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:58:16,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:17,685 INFO L124 PetriNetUnfolderBase]: 1423/2091 cut-off events. [2023-11-29 05:58:17,686 INFO L125 PetriNetUnfolderBase]: For 6047/6047 co-relation queries the response was YES. [2023-11-29 05:58:17,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9530 conditions, 2091 events. 1423/2091 cut-off events. For 6047/6047 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 8656 event pairs, 153 based on Foata normal form. 2/2093 useless extension candidates. Maximal degree in co-relation 7766. Up to 1281 conditions per place. [2023-11-29 05:58:17,703 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 240 selfloop transitions, 130 changer transitions 5/376 dead transitions. [2023-11-29 05:58:17,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 376 transitions, 3725 flow [2023-11-29 05:58:17,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 05:58:17,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 05:58:17,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 180 transitions. [2023-11-29 05:58:17,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5172413793103449 [2023-11-29 05:58:17,705 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 180 transitions. [2023-11-29 05:58:17,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 180 transitions. [2023-11-29 05:58:17,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:17,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 180 transitions. [2023-11-29 05:58:17,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 15.0) internal successors, (180), 12 states have internal predecessors, (180), 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 05:58:17,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 29.0) internal successors, (377), 13 states have internal predecessors, (377), 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 05:58:17,707 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 29.0) internal successors, (377), 13 states have internal predecessors, (377), 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 05:58:17,707 INFO L175 Difference]: Start difference. First operand has 73 places, 116 transitions, 926 flow. Second operand 12 states and 180 transitions. [2023-11-29 05:58:17,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 376 transitions, 3725 flow [2023-11-29 05:58:17,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 376 transitions, 3688 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-29 05:58:17,728 INFO L231 Difference]: Finished difference. Result has 88 places, 219 transitions, 2250 flow [2023-11-29 05:58:17,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2250, PETRI_PLACES=88, PETRI_TRANSITIONS=219} [2023-11-29 05:58:17,729 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 57 predicate places. [2023-11-29 05:58:17,729 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 219 transitions, 2250 flow [2023-11-29 05:58:17,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.0) internal successors, (161), 23 states have internal predecessors, (161), 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 05:58:17,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:17,729 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 05:58:17,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 05:58:17,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 05:58:17,930 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:58:17,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:17,930 INFO L85 PathProgramCache]: Analyzing trace with hash 2125986509, now seen corresponding path program 1 times [2023-11-29 05:58:17,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:17,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659375337] [2023-11-29 05:58:17,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:17,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:18,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:18,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:18,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659375337] [2023-11-29 05:58:18,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659375337] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:18,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096855956] [2023-11-29 05:58:18,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:18,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:18,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:18,543 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:18,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 05:58:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:18,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 05:58:18,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:18,686 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 15 treesize of output 1 [2023-11-29 05:58:18,836 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 7 [2023-11-29 05:58:18,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:18,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:19,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:19,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096855956] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:19,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:19,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 5] total 15 [2023-11-29 05:58:19,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714710572] [2023-11-29 05:58:19,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:19,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 05:58:19,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:19,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 05:58:19,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:58:19,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:58:19,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 219 transitions, 2250 flow. Second operand has 16 states, 16 states have (on average 7.6875) internal successors, (123), 16 states have internal predecessors, (123), 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 05:58:19,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:19,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:58:19,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:19,660 INFO L124 PetriNetUnfolderBase]: 1951/2852 cut-off events. [2023-11-29 05:58:19,660 INFO L125 PetriNetUnfolderBase]: For 10919/10919 co-relation queries the response was YES. [2023-11-29 05:58:19,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14903 conditions, 2852 events. 1951/2852 cut-off events. For 10919/10919 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 12574 event pairs, 172 based on Foata normal form. 1/2853 useless extension candidates. Maximal degree in co-relation 14547. Up to 1693 conditions per place. [2023-11-29 05:58:19,679 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 212 selfloop transitions, 192 changer transitions 1/406 dead transitions. [2023-11-29 05:58:19,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 406 transitions, 4778 flow [2023-11-29 05:58:19,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:58:19,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 05:58:19,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2023-11-29 05:58:19,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49808429118773945 [2023-11-29 05:58:19,681 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 130 transitions. [2023-11-29 05:58:19,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 130 transitions. [2023-11-29 05:58:19,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:19,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 130 transitions. [2023-11-29 05:58:19,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 05:58:19,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 29.0) internal successors, (290), 10 states have internal predecessors, (290), 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 05:58:19,682 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 29.0) internal successors, (290), 10 states have internal predecessors, (290), 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 05:58:19,682 INFO L175 Difference]: Start difference. First operand has 88 places, 219 transitions, 2250 flow. Second operand 9 states and 130 transitions. [2023-11-29 05:58:19,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 406 transitions, 4778 flow [2023-11-29 05:58:19,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 406 transitions, 4571 flow, removed 77 selfloop flow, removed 2 redundant places. [2023-11-29 05:58:19,731 INFO L231 Difference]: Finished difference. Result has 98 places, 299 transitions, 3545 flow [2023-11-29 05:58:19,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2079, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3545, PETRI_PLACES=98, PETRI_TRANSITIONS=299} [2023-11-29 05:58:19,732 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2023-11-29 05:58:19,733 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 299 transitions, 3545 flow [2023-11-29 05:58:19,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.6875) internal successors, (123), 16 states have internal predecessors, (123), 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 05:58:19,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:19,733 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 05:58:19,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 05:58:19,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:19,938 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:58:19,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:19,938 INFO L85 PathProgramCache]: Analyzing trace with hash -441233612, now seen corresponding path program 2 times [2023-11-29 05:58:19,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:19,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089406407] [2023-11-29 05:58:19,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:19,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:20,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:20,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:20,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089406407] [2023-11-29 05:58:20,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089406407] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:20,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987545866] [2023-11-29 05:58:20,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:58:20,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:20,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:20,442 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:20,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 05:58:20,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:58:20,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:58:20,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 05:58:20,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:20,604 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 15 treesize of output 1 [2023-11-29 05:58:20,859 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 7 [2023-11-29 05:58:20,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:20,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:21,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:21,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987545866] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:21,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:21,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 24 [2023-11-29 05:58:21,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952286377] [2023-11-29 05:58:21,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:21,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 05:58:21,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:21,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 05:58:21,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2023-11-29 05:58:21,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:58:21,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 299 transitions, 3545 flow. Second operand has 25 states, 25 states have (on average 6.76) internal successors, (169), 25 states have internal predecessors, (169), 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 05:58:21,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:21,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:58:21,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:22,927 INFO L124 PetriNetUnfolderBase]: 2363/3440 cut-off events. [2023-11-29 05:58:22,927 INFO L125 PetriNetUnfolderBase]: For 16883/16883 co-relation queries the response was YES. [2023-11-29 05:58:22,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19837 conditions, 3440 events. 2363/3440 cut-off events. For 16883/16883 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 15514 event pairs, 259 based on Foata normal form. 2/3442 useless extension candidates. Maximal degree in co-relation 19493. Up to 2776 conditions per place. [2023-11-29 05:58:22,950 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 346 selfloop transitions, 175 changer transitions 2/524 dead transitions. [2023-11-29 05:58:22,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 524 transitions, 6549 flow [2023-11-29 05:58:22,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 05:58:22,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-29 05:58:22,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 284 transitions. [2023-11-29 05:58:22,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3917241379310345 [2023-11-29 05:58:22,953 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 284 transitions. [2023-11-29 05:58:22,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 284 transitions. [2023-11-29 05:58:22,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:22,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 284 transitions. [2023-11-29 05:58:22,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 11.36) internal successors, (284), 25 states have internal predecessors, (284), 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 05:58:22,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 29.0) internal successors, (754), 26 states have internal predecessors, (754), 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 05:58:22,956 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 29.0) internal successors, (754), 26 states have internal predecessors, (754), 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 05:58:22,956 INFO L175 Difference]: Start difference. First operand has 98 places, 299 transitions, 3545 flow. Second operand 25 states and 284 transitions. [2023-11-29 05:58:22,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 524 transitions, 6549 flow [2023-11-29 05:58:23,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 524 transitions, 6428 flow, removed 58 selfloop flow, removed 2 redundant places. [2023-11-29 05:58:23,008 INFO L231 Difference]: Finished difference. Result has 136 places, 409 transitions, 5384 flow [2023-11-29 05:58:23,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3430, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=5384, PETRI_PLACES=136, PETRI_TRANSITIONS=409} [2023-11-29 05:58:23,009 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2023-11-29 05:58:23,009 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 409 transitions, 5384 flow [2023-11-29 05:58:23,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.76) internal successors, (169), 25 states have internal predecessors, (169), 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 05:58:23,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:23,010 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 05:58:23,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 05:58:23,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 05:58:23,210 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:58:23,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:23,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1888806951, now seen corresponding path program 2 times [2023-11-29 05:58:23,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:23,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233360132] [2023-11-29 05:58:23,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:23,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:23,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:23,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:23,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233360132] [2023-11-29 05:58:23,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233360132] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:23,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54313748] [2023-11-29 05:58:23,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:58:23,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:23,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:23,696 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:23,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 05:58:23,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:58:23,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:58:23,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:58:23,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:23,904 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 7 [2023-11-29 05:58:23,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:23,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:24,005 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:58:24,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 21 [2023-11-29 05:58:24,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:24,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54313748] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:24,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:24,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 5] total 13 [2023-11-29 05:58:24,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078070210] [2023-11-29 05:58:24,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:24,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 05:58:24,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:24,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 05:58:24,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:58:24,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:58:24,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 409 transitions, 5384 flow. Second operand has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 14 states have internal predecessors, (115), 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 05:58:24,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:24,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:58:24,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:25,055 INFO L124 PetriNetUnfolderBase]: 2791/4033 cut-off events. [2023-11-29 05:58:25,055 INFO L125 PetriNetUnfolderBase]: For 26829/26829 co-relation queries the response was YES. [2023-11-29 05:58:25,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26013 conditions, 4033 events. 2791/4033 cut-off events. For 26829/26829 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 18464 event pairs, 340 based on Foata normal form. 1/4034 useless extension candidates. Maximal degree in co-relation 25622. Up to 3317 conditions per place. [2023-11-29 05:58:25,085 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 364 selfloop transitions, 189 changer transitions 1/555 dead transitions. [2023-11-29 05:58:25,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 555 transitions, 8144 flow [2023-11-29 05:58:25,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:58:25,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 05:58:25,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2023-11-29 05:58:25,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4674329501915709 [2023-11-29 05:58:25,087 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 122 transitions. [2023-11-29 05:58:25,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 122 transitions. [2023-11-29 05:58:25,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:25,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 122 transitions. [2023-11-29 05:58:25,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 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 05:58:25,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 29.0) internal successors, (290), 10 states have internal predecessors, (290), 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 05:58:25,088 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 29.0) internal successors, (290), 10 states have internal predecessors, (290), 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 05:58:25,088 INFO L175 Difference]: Start difference. First operand has 136 places, 409 transitions, 5384 flow. Second operand 9 states and 122 transitions. [2023-11-29 05:58:25,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 555 transitions, 8144 flow [2023-11-29 05:58:25,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 555 transitions, 7809 flow, removed 105 selfloop flow, removed 6 redundant places. [2023-11-29 05:58:25,200 INFO L231 Difference]: Finished difference. Result has 141 places, 485 transitions, 6687 flow [2023-11-29 05:58:25,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=5092, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6687, PETRI_PLACES=141, PETRI_TRANSITIONS=485} [2023-11-29 05:58:25,201 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2023-11-29 05:58:25,201 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 485 transitions, 6687 flow [2023-11-29 05:58:25,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 14 states have internal predecessors, (115), 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 05:58:25,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:25,201 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 05:58:25,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 05:58:25,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:25,402 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:58:25,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:25,402 INFO L85 PathProgramCache]: Analyzing trace with hash -770794773, now seen corresponding path program 3 times [2023-11-29 05:58:25,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:25,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137250177] [2023-11-29 05:58:25,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:25,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:25,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:25,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:25,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137250177] [2023-11-29 05:58:25,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137250177] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:25,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983044799] [2023-11-29 05:58:25,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:58:25,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:25,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:25,904 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:25,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 05:58:26,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 05:58:26,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:58:26,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:58:26,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:26,102 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 7 [2023-11-29 05:58:26,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:26,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:26,181 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:58:26,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 21 [2023-11-29 05:58:26,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:26,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983044799] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:26,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:26,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 5] total 13 [2023-11-29 05:58:26,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487598842] [2023-11-29 05:58:26,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:26,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 05:58:26,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:26,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 05:58:26,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:58:26,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:58:26,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 485 transitions, 6687 flow. Second operand has 14 states, 14 states have (on average 8.142857142857142) internal successors, (114), 14 states have internal predecessors, (114), 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 05:58:26,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:26,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:58:26,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:27,257 INFO L124 PetriNetUnfolderBase]: 2935/4244 cut-off events. [2023-11-29 05:58:27,257 INFO L125 PetriNetUnfolderBase]: For 30657/30657 co-relation queries the response was YES. [2023-11-29 05:58:27,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28193 conditions, 4244 events. 2935/4244 cut-off events. For 30657/30657 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 19682 event pairs, 358 based on Foata normal form. 1/4245 useless extension candidates. Maximal degree in co-relation 27789. Up to 3722 conditions per place. [2023-11-29 05:58:27,288 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 402 selfloop transitions, 140 changer transitions 1/544 dead transitions. [2023-11-29 05:58:27,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 544 transitions, 8299 flow [2023-11-29 05:58:27,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:58:27,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 05:58:27,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2023-11-29 05:58:27,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4559386973180077 [2023-11-29 05:58:27,289 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 119 transitions. [2023-11-29 05:58:27,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 119 transitions. [2023-11-29 05:58:27,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:27,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 119 transitions. [2023-11-29 05:58:27,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 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 05:58:27,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 29.0) internal successors, (290), 10 states have internal predecessors, (290), 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 05:58:27,290 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 29.0) internal successors, (290), 10 states have internal predecessors, (290), 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 05:58:27,290 INFO L175 Difference]: Start difference. First operand has 141 places, 485 transitions, 6687 flow. Second operand 9 states and 119 transitions. [2023-11-29 05:58:27,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 544 transitions, 8299 flow [2023-11-29 05:58:27,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 544 transitions, 7976 flow, removed 30 selfloop flow, removed 5 redundant places. [2023-11-29 05:58:27,440 INFO L231 Difference]: Finished difference. Result has 146 places, 492 transitions, 6771 flow [2023-11-29 05:58:27,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=6364, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6771, PETRI_PLACES=146, PETRI_TRANSITIONS=492} [2023-11-29 05:58:27,440 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 115 predicate places. [2023-11-29 05:58:27,440 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 492 transitions, 6771 flow [2023-11-29 05:58:27,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.142857142857142) internal successors, (114), 14 states have internal predecessors, (114), 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 05:58:27,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:27,441 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 05:58:27,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 05:58:27,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 05:58:27,641 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:58:27,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:27,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1430592052, now seen corresponding path program 3 times [2023-11-29 05:58:27,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:27,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549750259] [2023-11-29 05:58:27,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:27,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:28,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:28,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:28,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549750259] [2023-11-29 05:58:28,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549750259] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:28,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610291484] [2023-11-29 05:58:28,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:58:28,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:28,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:28,191 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:28,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 05:58:28,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 05:58:28,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:58:28,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 05:58:28,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:28,355 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 15 treesize of output 1 [2023-11-29 05:58:28,608 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 7 [2023-11-29 05:58:28,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:28,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:28,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:28,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610291484] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:28,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:28,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 24 [2023-11-29 05:58:28,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062499183] [2023-11-29 05:58:28,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:28,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 05:58:28,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:28,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 05:58:28,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2023-11-29 05:58:28,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:58:28,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 492 transitions, 6771 flow. Second operand has 25 states, 25 states have (on average 6.76) internal successors, (169), 25 states have internal predecessors, (169), 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 05:58:28,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:28,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:58:28,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:30,288 INFO L124 PetriNetUnfolderBase]: 3019/4385 cut-off events. [2023-11-29 05:58:30,288 INFO L125 PetriNetUnfolderBase]: For 32164/32164 co-relation queries the response was YES. [2023-11-29 05:58:30,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29012 conditions, 4385 events. 3019/4385 cut-off events. For 32164/32164 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 20653 event pairs, 430 based on Foata normal form. 1/4386 useless extension candidates. Maximal degree in co-relation 28603. Up to 3866 conditions per place. [2023-11-29 05:58:30,320 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 423 selfloop transitions, 169 changer transitions 1/594 dead transitions. [2023-11-29 05:58:30,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 594 transitions, 8854 flow [2023-11-29 05:58:30,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 05:58:30,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-29 05:58:30,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 229 transitions. [2023-11-29 05:58:30,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39482758620689656 [2023-11-29 05:58:30,322 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 229 transitions. [2023-11-29 05:58:30,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 229 transitions. [2023-11-29 05:58:30,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:30,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 229 transitions. [2023-11-29 05:58:30,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 11.45) internal successors, (229), 20 states have internal predecessors, (229), 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 05:58:30,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 29.0) internal successors, (609), 21 states have internal predecessors, (609), 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 05:58:30,324 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 29.0) internal successors, (609), 21 states have internal predecessors, (609), 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 05:58:30,324 INFO L175 Difference]: Start difference. First operand has 146 places, 492 transitions, 6771 flow. Second operand 20 states and 229 transitions. [2023-11-29 05:58:30,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 594 transitions, 8854 flow [2023-11-29 05:58:30,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 594 transitions, 8613 flow, removed 28 selfloop flow, removed 5 redundant places. [2023-11-29 05:58:30,480 INFO L231 Difference]: Finished difference. Result has 163 places, 514 transitions, 7212 flow [2023-11-29 05:58:30,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=6541, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=7212, PETRI_PLACES=163, PETRI_TRANSITIONS=514} [2023-11-29 05:58:30,481 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 132 predicate places. [2023-11-29 05:58:30,481 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 514 transitions, 7212 flow [2023-11-29 05:58:30,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.76) internal successors, (169), 25 states have internal predecessors, (169), 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 05:58:30,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:30,482 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 05:58:30,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 05:58:30,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:30,682 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:58:30,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:30,682 INFO L85 PathProgramCache]: Analyzing trace with hash 625725104, now seen corresponding path program 4 times [2023-11-29 05:58:30,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:30,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824651179] [2023-11-29 05:58:30,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:30,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:31,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:31,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:31,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824651179] [2023-11-29 05:58:31,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824651179] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:31,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976675763] [2023-11-29 05:58:31,229 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:58:31,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:31,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:31,230 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:31,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 05:58:31,353 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:58:31,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:58:31,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 05:58:31,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:31,385 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 15 treesize of output 1 [2023-11-29 05:58:31,588 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:58:31,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 15 [2023-11-29 05:58:31,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:31,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:31,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:31,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976675763] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:31,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:31,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 24 [2023-11-29 05:58:31,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727020570] [2023-11-29 05:58:31,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:31,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 05:58:31,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:31,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 05:58:31,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2023-11-29 05:58:31,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:58:31,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 514 transitions, 7212 flow. Second operand has 25 states, 25 states have (on average 6.76) internal successors, (169), 25 states have internal predecessors, (169), 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 05:58:31,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:31,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:58:31,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:33,842 INFO L124 PetriNetUnfolderBase]: 3454/5002 cut-off events. [2023-11-29 05:58:33,843 INFO L125 PetriNetUnfolderBase]: For 38227/38227 co-relation queries the response was YES. [2023-11-29 05:58:33,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33783 conditions, 5002 events. 3454/5002 cut-off events. For 38227/38227 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 23952 event pairs, 449 based on Foata normal form. 1/5003 useless extension candidates. Maximal degree in co-relation 33356. Up to 4048 conditions per place. [2023-11-29 05:58:33,886 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 420 selfloop transitions, 311 changer transitions 1/733 dead transitions. [2023-11-29 05:58:33,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 733 transitions, 11084 flow [2023-11-29 05:58:33,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 05:58:33,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-29 05:58:33,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 291 transitions. [2023-11-29 05:58:33,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3859416445623342 [2023-11-29 05:58:33,889 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 291 transitions. [2023-11-29 05:58:33,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 291 transitions. [2023-11-29 05:58:33,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:33,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 291 transitions. [2023-11-29 05:58:33,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 11.192307692307692) internal successors, (291), 26 states have internal predecessors, (291), 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 05:58:33,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 29.0) internal successors, (783), 27 states have internal predecessors, (783), 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 05:58:33,892 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 29.0) internal successors, (783), 27 states have internal predecessors, (783), 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 05:58:33,893 INFO L175 Difference]: Start difference. First operand has 163 places, 514 transitions, 7212 flow. Second operand 26 states and 291 transitions. [2023-11-29 05:58:33,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 733 transitions, 11084 flow [2023-11-29 05:58:34,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 733 transitions, 10742 flow, removed 38 selfloop flow, removed 8 redundant places. [2023-11-29 05:58:34,098 INFO L231 Difference]: Finished difference. Result has 188 places, 634 transitions, 9521 flow [2023-11-29 05:58:34,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=6899, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=9521, PETRI_PLACES=188, PETRI_TRANSITIONS=634} [2023-11-29 05:58:34,099 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2023-11-29 05:58:34,099 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 634 transitions, 9521 flow [2023-11-29 05:58:34,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.76) internal successors, (169), 25 states have internal predecessors, (169), 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 05:58:34,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:34,099 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 05:58:34,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 05:58:34,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:34,300 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:58:34,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:34,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1987481869, now seen corresponding path program 4 times [2023-11-29 05:58:34,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:34,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121366530] [2023-11-29 05:58:34,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:34,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:34,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:34,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:34,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121366530] [2023-11-29 05:58:34,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121366530] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:34,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286372009] [2023-11-29 05:58:34,792 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:58:34,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:34,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:34,794 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:34,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 05:58:34,931 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:58:34,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:58:34,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:58:34,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:35,050 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 7 [2023-11-29 05:58:35,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:35,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:35,165 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:58:35,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 21 [2023-11-29 05:58:35,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:35,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286372009] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:35,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:35,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 5] total 17 [2023-11-29 05:58:35,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301220749] [2023-11-29 05:58:35,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:35,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:58:35,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:35,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:58:35,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:58:35,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:58:35,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 634 transitions, 9521 flow. Second operand has 18 states, 18 states have (on average 7.833333333333333) internal successors, (141), 18 states have internal predecessors, (141), 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 05:58:35,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:35,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:58:35,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:36,774 INFO L124 PetriNetUnfolderBase]: 3674/5321 cut-off events. [2023-11-29 05:58:36,774 INFO L125 PetriNetUnfolderBase]: For 49162/49162 co-relation queries the response was YES. [2023-11-29 05:58:36,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37872 conditions, 5321 events. 3674/5321 cut-off events. For 49162/49162 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 25778 event pairs, 480 based on Foata normal form. 1/5322 useless extension candidates. Maximal degree in co-relation 37417. Up to 4609 conditions per place. [2023-11-29 05:58:36,817 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 500 selfloop transitions, 184 changer transitions 1/686 dead transitions. [2023-11-29 05:58:36,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 686 transitions, 11367 flow [2023-11-29 05:58:36,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:58:36,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 05:58:36,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2023-11-29 05:58:36,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4482758620689655 [2023-11-29 05:58:36,818 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 117 transitions. [2023-11-29 05:58:36,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 117 transitions. [2023-11-29 05:58:36,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:36,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 117 transitions. [2023-11-29 05:58:36,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 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 05:58:36,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 29.0) internal successors, (290), 10 states have internal predecessors, (290), 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 05:58:36,820 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 29.0) internal successors, (290), 10 states have internal predecessors, (290), 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 05:58:36,820 INFO L175 Difference]: Start difference. First operand has 188 places, 634 transitions, 9521 flow. Second operand 9 states and 117 transitions. [2023-11-29 05:58:36,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 686 transitions, 11367 flow [2023-11-29 05:58:37,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 686 transitions, 10680 flow, removed 292 selfloop flow, removed 8 redundant places. [2023-11-29 05:58:37,095 INFO L231 Difference]: Finished difference. Result has 190 places, 648 transitions, 9489 flow [2023-11-29 05:58:37,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=8840, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9489, PETRI_PLACES=190, PETRI_TRANSITIONS=648} [2023-11-29 05:58:37,096 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2023-11-29 05:58:37,096 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 648 transitions, 9489 flow [2023-11-29 05:58:37,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.833333333333333) internal successors, (141), 18 states have internal predecessors, (141), 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 05:58:37,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:37,096 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 05:58:37,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 05:58:37,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:37,297 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:58:37,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:37,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1030382943, now seen corresponding path program 5 times [2023-11-29 05:58:37,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:37,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638942701] [2023-11-29 05:58:37,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:37,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:37,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:37,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:37,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638942701] [2023-11-29 05:58:37,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638942701] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:37,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873853033] [2023-11-29 05:58:37,757 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 05:58:37,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:37,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:37,758 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:37,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 05:58:37,850 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:58:37,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:58:37,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 05:58:37,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:37,874 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 15 treesize of output 1 [2023-11-29 05:58:38,003 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 7 [2023-11-29 05:58:38,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:38,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:38,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:38,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873853033] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:38,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:38,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 5] total 19 [2023-11-29 05:58:38,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149649576] [2023-11-29 05:58:38,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:38,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 05:58:38,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:38,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 05:58:38,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2023-11-29 05:58:38,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:58:38,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 648 transitions, 9489 flow. Second operand has 20 states, 20 states have (on average 7.45) internal successors, (149), 20 states have internal predecessors, (149), 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 05:58:38,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:38,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:58:38,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:39,422 INFO L124 PetriNetUnfolderBase]: 3780/5478 cut-off events. [2023-11-29 05:58:39,422 INFO L125 PetriNetUnfolderBase]: For 46829/46829 co-relation queries the response was YES. [2023-11-29 05:58:39,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38165 conditions, 5478 events. 3780/5478 cut-off events. For 46829/46829 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 26625 event pairs, 596 based on Foata normal form. 1/5479 useless extension candidates. Maximal degree in co-relation 37725. Up to 4708 conditions per place. [2023-11-29 05:58:39,467 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 479 selfloop transitions, 238 changer transitions 1/719 dead transitions. [2023-11-29 05:58:39,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 719 transitions, 11638 flow [2023-11-29 05:58:39,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:58:39,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 05:58:39,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2023-11-29 05:58:39,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4559386973180077 [2023-11-29 05:58:39,468 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 119 transitions. [2023-11-29 05:58:39,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 119 transitions. [2023-11-29 05:58:39,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:39,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 119 transitions. [2023-11-29 05:58:39,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 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 05:58:39,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 29.0) internal successors, (290), 10 states have internal predecessors, (290), 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 05:58:39,470 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 29.0) internal successors, (290), 10 states have internal predecessors, (290), 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 05:58:39,470 INFO L175 Difference]: Start difference. First operand has 190 places, 648 transitions, 9489 flow. Second operand 9 states and 119 transitions. [2023-11-29 05:58:39,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 719 transitions, 11638 flow [2023-11-29 05:58:39,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 719 transitions, 11316 flow, removed 58 selfloop flow, removed 4 redundant places. [2023-11-29 05:58:39,812 INFO L231 Difference]: Finished difference. Result has 196 places, 664 transitions, 10053 flow [2023-11-29 05:58:39,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=9167, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10053, PETRI_PLACES=196, PETRI_TRANSITIONS=664} [2023-11-29 05:58:39,813 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2023-11-29 05:58:39,813 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 664 transitions, 10053 flow [2023-11-29 05:58:39,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.45) internal successors, (149), 20 states have internal predecessors, (149), 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 05:58:39,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:39,813 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 05:58:39,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-29 05:58:40,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:40,014 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:58:40,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:40,014 INFO L85 PathProgramCache]: Analyzing trace with hash 973569233, now seen corresponding path program 6 times [2023-11-29 05:58:40,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:40,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249167494] [2023-11-29 05:58:40,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:40,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:40,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:40,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:40,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249167494] [2023-11-29 05:58:40,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249167494] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:40,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233523777] [2023-11-29 05:58:40,564 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 05:58:40,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:40,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:40,565 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:40,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 05:58:40,658 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 05:58:40,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:58:40,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:58:40,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:40,739 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 7 [2023-11-29 05:58:40,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:40,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:40,819 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:58:40,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 21 [2023-11-29 05:58:41,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:41,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233523777] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:41,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:41,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 5] total 13 [2023-11-29 05:58:41,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356223688] [2023-11-29 05:58:41,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:41,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 05:58:41,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:41,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 05:58:41,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:58:41,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:58:41,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 664 transitions, 10053 flow. Second operand has 14 states, 14 states have (on average 8.142857142857142) internal successors, (114), 14 states have internal predecessors, (114), 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 05:58:41,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:41,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:58:41,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:42,437 INFO L124 PetriNetUnfolderBase]: 3886/5635 cut-off events. [2023-11-29 05:58:42,437 INFO L125 PetriNetUnfolderBase]: For 51864/51864 co-relation queries the response was YES. [2023-11-29 05:58:42,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39949 conditions, 5635 events. 3886/5635 cut-off events. For 51864/51864 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 27620 event pairs, 614 based on Foata normal form. 1/5636 useless extension candidates. Maximal degree in co-relation 39499. Up to 5077 conditions per place. [2023-11-29 05:58:42,480 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 520 selfloop transitions, 184 changer transitions 1/706 dead transitions. [2023-11-29 05:58:42,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 706 transitions, 11796 flow [2023-11-29 05:58:42,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:58:42,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 05:58:42,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2023-11-29 05:58:42,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-11-29 05:58:42,481 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 116 transitions. [2023-11-29 05:58:42,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 116 transitions. [2023-11-29 05:58:42,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:42,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 116 transitions. [2023-11-29 05:58:42,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 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 05:58:42,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 29.0) internal successors, (290), 10 states have internal predecessors, (290), 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 05:58:42,482 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 29.0) internal successors, (290), 10 states have internal predecessors, (290), 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 05:58:42,482 INFO L175 Difference]: Start difference. First operand has 196 places, 664 transitions, 10053 flow. Second operand 9 states and 116 transitions. [2023-11-29 05:58:42,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 706 transitions, 11796 flow [2023-11-29 05:58:42,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 706 transitions, 11287 flow, removed 106 selfloop flow, removed 5 redundant places. [2023-11-29 05:58:42,762 INFO L231 Difference]: Finished difference. Result has 201 places, 669 transitions, 10043 flow [2023-11-29 05:58:42,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=9544, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10043, PETRI_PLACES=201, PETRI_TRANSITIONS=669} [2023-11-29 05:58:42,762 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2023-11-29 05:58:42,762 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 669 transitions, 10043 flow [2023-11-29 05:58:42,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.142857142857142) internal successors, (114), 14 states have internal predecessors, (114), 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 05:58:42,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:42,763 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 05:58:42,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-29 05:58:42,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:42,964 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:58:42,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:42,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1065468684, now seen corresponding path program 5 times [2023-11-29 05:58:42,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:42,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898174736] [2023-11-29 05:58:42,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:42,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:43,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:43,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:43,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898174736] [2023-11-29 05:58:43,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898174736] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:43,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419882590] [2023-11-29 05:58:43,463 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 05:58:43,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:43,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:43,464 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:43,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 05:58:43,555 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 05:58:43,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:58:43,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 05:58:43,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:43,585 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 15 treesize of output 1 [2023-11-29 05:58:43,833 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:58:43,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 15 [2023-11-29 05:58:43,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:43,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:44,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:44,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419882590] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:44,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:44,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 22 [2023-11-29 05:58:44,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25010434] [2023-11-29 05:58:44,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:44,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 05:58:44,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:44,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 05:58:44,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2023-11-29 05:58:44,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:58:44,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 669 transitions, 10043 flow. Second operand has 23 states, 23 states have (on average 7.0) internal successors, (161), 23 states have internal predecessors, (161), 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 05:58:44,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:44,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:58:44,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:48,138 INFO L124 PetriNetUnfolderBase]: 5184/7499 cut-off events. [2023-11-29 05:58:48,139 INFO L125 PetriNetUnfolderBase]: For 79544/79544 co-relation queries the response was YES. [2023-11-29 05:58:48,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52873 conditions, 7499 events. 5184/7499 cut-off events. For 79544/79544 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 38305 event pairs, 595 based on Foata normal form. 5/7504 useless extension candidates. Maximal degree in co-relation 52371. Up to 5531 conditions per place. [2023-11-29 05:58:48,206 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 704 selfloop transitions, 348 changer transitions 10/1063 dead transitions. [2023-11-29 05:58:48,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 1063 transitions, 16712 flow [2023-11-29 05:58:48,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-29 05:58:48,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-11-29 05:58:48,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 597 transitions. [2023-11-29 05:58:48,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42887931034482757 [2023-11-29 05:58:48,208 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 597 transitions. [2023-11-29 05:58:48,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 597 transitions. [2023-11-29 05:58:48,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:48,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 597 transitions. [2023-11-29 05:58:48,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 12.4375) internal successors, (597), 48 states have internal predecessors, (597), 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 05:58:48,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 29.0) internal successors, (1421), 49 states have internal predecessors, (1421), 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 05:58:48,213 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 29.0) internal successors, (1421), 49 states have internal predecessors, (1421), 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 05:58:48,213 INFO L175 Difference]: Start difference. First operand has 201 places, 669 transitions, 10043 flow. Second operand 48 states and 597 transitions. [2023-11-29 05:58:48,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 1063 transitions, 16712 flow [2023-11-29 05:58:48,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 1063 transitions, 16281 flow, removed 34 selfloop flow, removed 7 redundant places. [2023-11-29 05:58:48,724 INFO L231 Difference]: Finished difference. Result has 248 places, 845 transitions, 12833 flow [2023-11-29 05:58:48,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=9612, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=12833, PETRI_PLACES=248, PETRI_TRANSITIONS=845} [2023-11-29 05:58:48,725 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2023-11-29 05:58:48,725 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 845 transitions, 12833 flow [2023-11-29 05:58:48,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.0) internal successors, (161), 23 states have internal predecessors, (161), 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 05:58:48,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:48,726 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 05:58:48,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 05:58:48,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:48,926 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:58:48,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:48,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1128940694, now seen corresponding path program 6 times [2023-11-29 05:58:48,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:48,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470554774] [2023-11-29 05:58:48,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:48,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:49,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:49,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:49,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470554774] [2023-11-29 05:58:49,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470554774] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:49,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049965640] [2023-11-29 05:58:49,512 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 05:58:49,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:49,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:49,515 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:49,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 05:58:49,637 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 05:58:49,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:58:49,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 05:58:49,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:49,674 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 15 treesize of output 1 [2023-11-29 05:58:49,874 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 7 [2023-11-29 05:58:49,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:49,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:50,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:50,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049965640] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:50,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:50,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 23 [2023-11-29 05:58:50,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107967923] [2023-11-29 05:58:50,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:50,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 05:58:50,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:50,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 05:58:50,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2023-11-29 05:58:50,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:58:50,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 845 transitions, 12833 flow. Second operand has 24 states, 24 states have (on average 6.833333333333333) internal successors, (164), 24 states have internal predecessors, (164), 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 05:58:50,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:50,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:58:50,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:52,838 INFO L124 PetriNetUnfolderBase]: 5460/7893 cut-off events. [2023-11-29 05:58:52,838 INFO L125 PetriNetUnfolderBase]: For 88807/88807 co-relation queries the response was YES. [2023-11-29 05:58:52,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57698 conditions, 7893 events. 5460/7893 cut-off events. For 88807/88807 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 40549 event pairs, 627 based on Foata normal form. 1/7894 useless extension candidates. Maximal degree in co-relation 57204. Up to 7098 conditions per place. [2023-11-29 05:58:52,903 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 709 selfloop transitions, 247 changer transitions 1/958 dead transitions. [2023-11-29 05:58:52,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 958 transitions, 15967 flow [2023-11-29 05:58:52,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 05:58:52,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-29 05:58:52,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 298 transitions. [2023-11-29 05:58:52,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3669950738916256 [2023-11-29 05:58:52,905 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 298 transitions. [2023-11-29 05:58:52,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 298 transitions. [2023-11-29 05:58:52,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:52,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 298 transitions. [2023-11-29 05:58:52,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 10.642857142857142) internal successors, (298), 28 states have internal predecessors, (298), 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 05:58:52,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 29.0) internal successors, (841), 29 states have internal predecessors, (841), 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 05:58:52,908 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 29.0) internal successors, (841), 29 states have internal predecessors, (841), 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 05:58:52,908 INFO L175 Difference]: Start difference. First operand has 248 places, 845 transitions, 12833 flow. Second operand 28 states and 298 transitions. [2023-11-29 05:58:52,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 958 transitions, 15967 flow [2023-11-29 05:58:53,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 958 transitions, 14092 flow, removed 856 selfloop flow, removed 6 redundant places. [2023-11-29 05:58:53,595 INFO L231 Difference]: Finished difference. Result has 273 places, 875 transitions, 12152 flow [2023-11-29 05:58:53,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=11223, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=845, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=12152, PETRI_PLACES=273, PETRI_TRANSITIONS=875} [2023-11-29 05:58:53,596 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 242 predicate places. [2023-11-29 05:58:53,596 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 875 transitions, 12152 flow [2023-11-29 05:58:53,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.833333333333333) internal successors, (164), 24 states have internal predecessors, (164), 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 05:58:53,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:53,597 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 05:58:53,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 05:58:53,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 05:58:53,797 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:58:53,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:53,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1363758187, now seen corresponding path program 7 times [2023-11-29 05:58:53,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:53,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138313189] [2023-11-29 05:58:53,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:53,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:53,882 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:53,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:53,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138313189] [2023-11-29 05:58:53,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138313189] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:53,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176508035] [2023-11-29 05:58:53,883 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 05:58:53,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:53,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:53,884 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:53,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 05:58:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:53,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:58:53,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:54,051 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:54,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:54,112 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:54,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176508035] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:54,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:54,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-11-29 05:58:54,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553533234] [2023-11-29 05:58:54,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:54,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 05:58:54,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:54,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 05:58:54,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:58:54,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:58:54,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 875 transitions, 12152 flow. Second operand has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 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 05:58:54,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:54,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:58:54,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:56,521 INFO L124 PetriNetUnfolderBase]: 6403/9246 cut-off events. [2023-11-29 05:58:56,521 INFO L125 PetriNetUnfolderBase]: For 102833/102833 co-relation queries the response was YES. [2023-11-29 05:58:56,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61877 conditions, 9246 events. 6403/9246 cut-off events. For 102833/102833 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 48801 event pairs, 1618 based on Foata normal form. 270/9486 useless extension candidates. Maximal degree in co-relation 61388. Up to 6453 conditions per place. [2023-11-29 05:58:56,684 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 948 selfloop transitions, 92 changer transitions 0/1041 dead transitions. [2023-11-29 05:58:56,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 1041 transitions, 15971 flow [2023-11-29 05:58:56,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:58:56,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 05:58:56,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2023-11-29 05:58:56,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4525862068965517 [2023-11-29 05:58:56,685 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 105 transitions. [2023-11-29 05:58:56,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 105 transitions. [2023-11-29 05:58:56,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:56,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 105 transitions. [2023-11-29 05:58:56,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 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 05:58:56,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 29.0) internal successors, (261), 9 states have internal predecessors, (261), 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 05:58:56,686 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 29.0) internal successors, (261), 9 states have internal predecessors, (261), 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 05:58:56,686 INFO L175 Difference]: Start difference. First operand has 273 places, 875 transitions, 12152 flow. Second operand 8 states and 105 transitions. [2023-11-29 05:58:56,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 1041 transitions, 15971 flow [2023-11-29 05:58:57,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 1041 transitions, 15474 flow, removed 112 selfloop flow, removed 14 redundant places. [2023-11-29 05:58:57,261 INFO L231 Difference]: Finished difference. Result has 268 places, 864 transitions, 11817 flow [2023-11-29 05:58:57,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=11012, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=734, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11817, PETRI_PLACES=268, PETRI_TRANSITIONS=864} [2023-11-29 05:58:57,263 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 237 predicate places. [2023-11-29 05:58:57,263 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 864 transitions, 11817 flow [2023-11-29 05:58:57,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 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 05:58:57,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:57,263 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 05:58:57,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-29 05:58:57,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 05:58:57,464 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:58:57,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:57,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1077078090, now seen corresponding path program 8 times [2023-11-29 05:58:57,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:57,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544705617] [2023-11-29 05:58:57,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:57,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:57,532 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:57,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:57,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544705617] [2023-11-29 05:58:57,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544705617] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:57,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79501965] [2023-11-29 05:58:57,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:58:57,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:57,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:57,534 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:57,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 05:58:57,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:58:57,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:58:57,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:58:57,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:57,693 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:57,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:57,737 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:57,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79501965] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:57,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:57,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-11-29 05:58:57,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605810854] [2023-11-29 05:58:57,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:57,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 05:58:57,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:57,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 05:58:57,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:58:57,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:58:57,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 864 transitions, 11817 flow. Second operand has 14 states, 14 states have (on average 7.0) internal successors, (98), 14 states have internal predecessors, (98), 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 05:58:57,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:57,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:58:57,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:59,744 INFO L124 PetriNetUnfolderBase]: 5769/8510 cut-off events. [2023-11-29 05:58:59,745 INFO L125 PetriNetUnfolderBase]: For 97863/97863 co-relation queries the response was YES. [2023-11-29 05:58:59,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57273 conditions, 8510 events. 5769/8510 cut-off events. For 97863/97863 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 46361 event pairs, 1309 based on Foata normal form. 398/8908 useless extension candidates. Maximal degree in co-relation 56794. Up to 3411 conditions per place. [2023-11-29 05:58:59,830 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 846 selfloop transitions, 121 changer transitions 0/968 dead transitions. [2023-11-29 05:58:59,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 968 transitions, 14737 flow [2023-11-29 05:58:59,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:58:59,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:58:59,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2023-11-29 05:58:59,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876847290640394 [2023-11-29 05:58:59,832 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 99 transitions. [2023-11-29 05:58:59,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 99 transitions. [2023-11-29 05:58:59,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:59,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 99 transitions. [2023-11-29 05:58:59,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 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 05:58:59,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 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 05:58:59,833 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 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 05:58:59,833 INFO L175 Difference]: Start difference. First operand has 268 places, 864 transitions, 11817 flow. Second operand 7 states and 99 transitions. [2023-11-29 05:58:59,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 968 transitions, 14737 flow [2023-11-29 05:59:00,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 968 transitions, 14616 flow, removed 35 selfloop flow, removed 5 redundant places. [2023-11-29 05:59:00,425 INFO L231 Difference]: Finished difference. Result has 270 places, 824 transitions, 11635 flow [2023-11-29 05:59:00,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=11175, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=814, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=693, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11635, PETRI_PLACES=270, PETRI_TRANSITIONS=824} [2023-11-29 05:59:00,426 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 239 predicate places. [2023-11-29 05:59:00,426 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 824 transitions, 11635 flow [2023-11-29 05:59:00,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.0) internal successors, (98), 14 states have internal predecessors, (98), 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 05:59:00,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:59:00,427 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 05:59:00,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 05:59:00,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 05:59:00,627 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:59:00,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:59:00,628 INFO L85 PathProgramCache]: Analyzing trace with hash -208541324, now seen corresponding path program 7 times [2023-11-29 05:59:00,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:59:00,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137211442] [2023-11-29 05:59:00,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:59:00,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:59:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:59:00,746 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:59:00,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:59:00,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137211442] [2023-11-29 05:59:00,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137211442] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:59:00,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377571343] [2023-11-29 05:59:00,747 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 05:59:00,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:00,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:59:00,748 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:59:00,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 05:59:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:59:00,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 05:59:00,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:59:00,919 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:59:00,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:59:00,969 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:59:00,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377571343] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:59:00,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:59:00,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-11-29 05:59:00,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534791448] [2023-11-29 05:59:00,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:59:00,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 05:59:00,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:59:00,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 05:59:00,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:59:00,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:59:00,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 824 transitions, 11635 flow. Second operand has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 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 05:59:00,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:59:00,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:59:00,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:59:03,126 INFO L124 PetriNetUnfolderBase]: 5415/8071 cut-off events. [2023-11-29 05:59:03,127 INFO L125 PetriNetUnfolderBase]: For 91053/91053 co-relation queries the response was YES. [2023-11-29 05:59:03,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55310 conditions, 8071 events. 5415/8071 cut-off events. For 91053/91053 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 44740 event pairs, 1255 based on Foata normal form. 188/8259 useless extension candidates. Maximal degree in co-relation 54840. Up to 2957 conditions per place. [2023-11-29 05:59:03,190 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 793 selfloop transitions, 173 changer transitions 72/1039 dead transitions. [2023-11-29 05:59:03,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 1039 transitions, 15624 flow [2023-11-29 05:59:03,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:59:03,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:59:03,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 100 transitions. [2023-11-29 05:59:03,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49261083743842365 [2023-11-29 05:59:03,191 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 100 transitions. [2023-11-29 05:59:03,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 100 transitions. [2023-11-29 05:59:03,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:59:03,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 100 transitions. [2023-11-29 05:59:03,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 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 05:59:03,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 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 05:59:03,192 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 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 05:59:03,192 INFO L175 Difference]: Start difference. First operand has 270 places, 824 transitions, 11635 flow. Second operand 7 states and 100 transitions. [2023-11-29 05:59:03,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 1039 transitions, 15624 flow [2023-11-29 05:59:03,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 1039 transitions, 15180 flow, removed 76 selfloop flow, removed 6 redundant places. [2023-11-29 05:59:03,740 INFO L231 Difference]: Finished difference. Result has 273 places, 787 transitions, 11416 flow [2023-11-29 05:59:03,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=11236, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=822, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=649, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11416, PETRI_PLACES=273, PETRI_TRANSITIONS=787} [2023-11-29 05:59:03,741 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 242 predicate places. [2023-11-29 05:59:03,741 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 787 transitions, 11416 flow [2023-11-29 05:59:03,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 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 05:59:03,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:59:03,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:59:03,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 05:59:03,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 05:59:03,942 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:59:03,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:59:03,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1312794953, now seen corresponding path program 1 times [2023-11-29 05:59:03,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:59:03,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444494409] [2023-11-29 05:59:03,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:59:03,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:59:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:59:04,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:59:04,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:59:04,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444494409] [2023-11-29 05:59:04,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444494409] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:59:04,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975124654] [2023-11-29 05:59:04,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:59:04,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:04,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:59:04,012 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:59:04,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 05:59:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:59:04,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 05:59:04,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:59:04,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:59:04,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:59:04,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:59:04,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975124654] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:59:04,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:59:04,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-29 05:59:04,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905173069] [2023-11-29 05:59:04,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:59:04,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 05:59:04,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:59:04,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 05:59:04,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:59:04,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:59:04,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 787 transitions, 11416 flow. Second operand has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 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 05:59:04,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:59:04,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:59:04,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:59:06,526 INFO L124 PetriNetUnfolderBase]: 5334/8008 cut-off events. [2023-11-29 05:59:06,526 INFO L125 PetriNetUnfolderBase]: For 103010/103010 co-relation queries the response was YES. [2023-11-29 05:59:06,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56440 conditions, 8008 events. 5334/8008 cut-off events. For 103010/103010 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 45051 event pairs, 1079 based on Foata normal form. 100/8108 useless extension candidates. Maximal degree in co-relation 55945. Up to 2784 conditions per place. [2023-11-29 05:59:06,591 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 800 selfloop transitions, 164 changer transitions 46/1011 dead transitions. [2023-11-29 05:59:06,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 1011 transitions, 15218 flow [2023-11-29 05:59:06,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:59:06,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 05:59:06,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2023-11-29 05:59:06,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-29 05:59:06,592 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 145 transitions. [2023-11-29 05:59:06,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 145 transitions. [2023-11-29 05:59:06,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:59:06,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 145 transitions. [2023-11-29 05:59:06,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 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 05:59:06,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 29.0) internal successors, (319), 11 states have internal predecessors, (319), 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 05:59:06,593 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 29.0) internal successors, (319), 11 states have internal predecessors, (319), 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 05:59:06,593 INFO L175 Difference]: Start difference. First operand has 273 places, 787 transitions, 11416 flow. Second operand 10 states and 145 transitions. [2023-11-29 05:59:06,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 1011 transitions, 15218 flow [2023-11-29 05:59:07,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 1011 transitions, 15161 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-11-29 05:59:07,147 INFO L231 Difference]: Finished difference. Result has 283 places, 777 transitions, 11672 flow [2023-11-29 05:59:07,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=11361, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=787, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11672, PETRI_PLACES=283, PETRI_TRANSITIONS=777} [2023-11-29 05:59:07,148 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 252 predicate places. [2023-11-29 05:59:07,148 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 777 transitions, 11672 flow [2023-11-29 05:59:07,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 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 05:59:07,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:59:07,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:59:07,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 05:59:07,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 05:59:07,348 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:59:07,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:59:07,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1998236527, now seen corresponding path program 2 times [2023-11-29 05:59:07,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:59:07,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990631190] [2023-11-29 05:59:07,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:59:07,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:59:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:59:07,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:59:07,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:59:07,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990631190] [2023-11-29 05:59:07,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990631190] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:59:07,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387757345] [2023-11-29 05:59:07,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:59:07,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:07,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:59:07,437 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:59:07,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 05:59:07,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:59:07,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:59:07,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 05:59:07,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:59:07,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:59:07,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:59:07,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:59:07,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387757345] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:59:07,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:59:07,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-29 05:59:07,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937457996] [2023-11-29 05:59:07,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:59:07,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 05:59:07,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:59:07,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 05:59:07,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:59:07,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:59:07,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 777 transitions, 11672 flow. Second operand has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 17 states have internal predecessors, (105), 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 05:59:07,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:59:07,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:59:07,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:59:09,903 INFO L124 PetriNetUnfolderBase]: 5745/8435 cut-off events. [2023-11-29 05:59:09,903 INFO L125 PetriNetUnfolderBase]: For 125439/125439 co-relation queries the response was YES. [2023-11-29 05:59:09,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62147 conditions, 8435 events. 5745/8435 cut-off events. For 125439/125439 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 45957 event pairs, 1105 based on Foata normal form. 126/8561 useless extension candidates. Maximal degree in co-relation 61628. Up to 2887 conditions per place. [2023-11-29 05:59:09,994 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 870 selfloop transitions, 242 changer transitions 34/1147 dead transitions. [2023-11-29 05:59:09,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 1147 transitions, 17558 flow [2023-11-29 05:59:09,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:59:09,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 05:59:09,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2023-11-29 05:59:09,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4724137931034483 [2023-11-29 05:59:09,995 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 137 transitions. [2023-11-29 05:59:09,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 137 transitions. [2023-11-29 05:59:09,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:59:09,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 137 transitions. [2023-11-29 05:59:09,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 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 05:59:09,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 29.0) internal successors, (319), 11 states have internal predecessors, (319), 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 05:59:09,996 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 29.0) internal successors, (319), 11 states have internal predecessors, (319), 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 05:59:09,997 INFO L175 Difference]: Start difference. First operand has 283 places, 777 transitions, 11672 flow. Second operand 10 states and 137 transitions. [2023-11-29 05:59:09,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 1147 transitions, 17558 flow [2023-11-29 05:59:11,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 1147 transitions, 16733 flow, removed 112 selfloop flow, removed 10 redundant places. [2023-11-29 05:59:11,050 INFO L231 Difference]: Finished difference. Result has 283 places, 850 transitions, 12633 flow [2023-11-29 05:59:11,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=11144, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=777, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12633, PETRI_PLACES=283, PETRI_TRANSITIONS=850} [2023-11-29 05:59:11,052 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 252 predicate places. [2023-11-29 05:59:11,052 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 850 transitions, 12633 flow [2023-11-29 05:59:11,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 17 states have internal predecessors, (105), 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 05:59:11,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:59:11,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:59:11,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 05:59:11,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 05:59:11,253 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:59:11,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:59:11,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1040428615, now seen corresponding path program 3 times [2023-11-29 05:59:11,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:59:11,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188311161] [2023-11-29 05:59:11,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:59:11,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:59:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:59:11,356 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:59:11,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:59:11,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188311161] [2023-11-29 05:59:11,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188311161] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:59:11,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426200452] [2023-11-29 05:59:11,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:59:11,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:11,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:59:11,358 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:59:11,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 05:59:11,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 05:59:11,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:59:11,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 05:59:11,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:59:11,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:59:11,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:59:11,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:59:11,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426200452] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:59:11,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:59:11,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-11-29 05:59:11,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501996957] [2023-11-29 05:59:11,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:59:11,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:59:11,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:59:11,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:59:11,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:59:11,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:59:11,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 850 transitions, 12633 flow. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 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 05:59:11,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:59:11,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:59:11,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:59:13,915 INFO L124 PetriNetUnfolderBase]: 5507/8207 cut-off events. [2023-11-29 05:59:13,915 INFO L125 PetriNetUnfolderBase]: For 121886/121886 co-relation queries the response was YES. [2023-11-29 05:59:13,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61524 conditions, 8207 events. 5507/8207 cut-off events. For 121886/121886 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 46068 event pairs, 1139 based on Foata normal form. 290/8497 useless extension candidates. Maximal degree in co-relation 60924. Up to 2953 conditions per place. [2023-11-29 05:59:13,986 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 852 selfloop transitions, 178 changer transitions 51/1082 dead transitions. [2023-11-29 05:59:13,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 1082 transitions, 16329 flow [2023-11-29 05:59:13,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:59:13,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 05:59:13,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2023-11-29 05:59:13,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46206896551724136 [2023-11-29 05:59:13,987 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 134 transitions. [2023-11-29 05:59:13,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 134 transitions. [2023-11-29 05:59:13,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:59:13,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 134 transitions. [2023-11-29 05:59:13,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 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 05:59:13,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 29.0) internal successors, (319), 11 states have internal predecessors, (319), 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 05:59:13,989 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 29.0) internal successors, (319), 11 states have internal predecessors, (319), 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 05:59:13,989 INFO L175 Difference]: Start difference. First operand has 283 places, 850 transitions, 12633 flow. Second operand 10 states and 134 transitions. [2023-11-29 05:59:13,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 1082 transitions, 16329 flow [2023-11-29 05:59:14,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 1082 transitions, 15775 flow, removed 125 selfloop flow, removed 7 redundant places. [2023-11-29 05:59:14,917 INFO L231 Difference]: Finished difference. Result has 283 places, 770 transitions, 11391 flow [2023-11-29 05:59:14,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=11192, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=794, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11391, PETRI_PLACES=283, PETRI_TRANSITIONS=770} [2023-11-29 05:59:14,918 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 252 predicate places. [2023-11-29 05:59:14,918 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 770 transitions, 11391 flow [2023-11-29 05:59:14,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 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 05:59:14,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:59:14,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:59:14,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 05:59:15,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 05:59:15,119 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:59:15,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:59:15,120 INFO L85 PathProgramCache]: Analyzing trace with hash -85399545, now seen corresponding path program 4 times [2023-11-29 05:59:15,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:59:15,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941111204] [2023-11-29 05:59:15,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:59:15,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:59:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:59:15,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:59:15,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:59:15,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941111204] [2023-11-29 05:59:15,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941111204] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:59:15,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465347581] [2023-11-29 05:59:15,198 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:59:15,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:15,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:59:15,199 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:59:15,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 05:59:15,290 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:59:15,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:59:15,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:59:15,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:59:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:59:15,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:59:15,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:59:15,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465347581] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:59:15,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:59:15,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2023-11-29 05:59:15,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961229447] [2023-11-29 05:59:15,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:59:15,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 05:59:15,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:59:15,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 05:59:15,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:59:15,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:59:15,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 770 transitions, 11391 flow. Second operand has 16 states, 16 states have (on average 6.8125) internal successors, (109), 16 states have internal predecessors, (109), 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 05:59:15,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:59:15,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:59:15,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:59:18,664 INFO L124 PetriNetUnfolderBase]: 6557/9707 cut-off events. [2023-11-29 05:59:18,664 INFO L125 PetriNetUnfolderBase]: For 146301/146301 co-relation queries the response was YES. [2023-11-29 05:59:18,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72133 conditions, 9707 events. 6557/9707 cut-off events. For 146301/146301 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 55323 event pairs, 361 based on Foata normal form. 306/10013 useless extension candidates. Maximal degree in co-relation 71522. Up to 2499 conditions per place. [2023-11-29 05:59:18,750 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 713 selfloop transitions, 551 changer transitions 81/1346 dead transitions. [2023-11-29 05:59:18,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 1346 transitions, 20391 flow [2023-11-29 05:59:18,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-29 05:59:18,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-11-29 05:59:18,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 445 transitions. [2023-11-29 05:59:18,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38362068965517243 [2023-11-29 05:59:18,752 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 445 transitions. [2023-11-29 05:59:18,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 445 transitions. [2023-11-29 05:59:18,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:59:18,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 445 transitions. [2023-11-29 05:59:18,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 11.125) internal successors, (445), 40 states have internal predecessors, (445), 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 05:59:18,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 29.0) internal successors, (1189), 41 states have internal predecessors, (1189), 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 05:59:18,754 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 29.0) internal successors, (1189), 41 states have internal predecessors, (1189), 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 05:59:18,754 INFO L175 Difference]: Start difference. First operand has 283 places, 770 transitions, 11391 flow. Second operand 40 states and 445 transitions. [2023-11-29 05:59:18,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 1346 transitions, 20391 flow [2023-11-29 05:59:19,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 1346 transitions, 19721 flow, removed 75 selfloop flow, removed 8 redundant places. [2023-11-29 05:59:19,961 INFO L231 Difference]: Finished difference. Result has 334 places, 972 transitions, 15326 flow [2023-11-29 05:59:19,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=11001, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=768, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=357, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=15326, PETRI_PLACES=334, PETRI_TRANSITIONS=972} [2023-11-29 05:59:19,962 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2023-11-29 05:59:19,962 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 972 transitions, 15326 flow [2023-11-29 05:59:19,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.8125) internal successors, (109), 16 states have internal predecessors, (109), 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 05:59:19,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:59:19,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:59:19,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 05:59:20,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:20,163 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:59:20,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:59:20,163 INFO L85 PathProgramCache]: Analyzing trace with hash 221687375, now seen corresponding path program 5 times [2023-11-29 05:59:20,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:59:20,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105158605] [2023-11-29 05:59:20,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:59:20,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:59:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:59:20,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:59:20,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:59:20,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105158605] [2023-11-29 05:59:20,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105158605] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:59:20,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346208922] [2023-11-29 05:59:20,246 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 05:59:20,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:20,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:59:20,247 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:59:20,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 05:59:20,363 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:59:20,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:59:20,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 05:59:20,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:59:20,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:59:20,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:59:20,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:59:20,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346208922] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:59:20,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:59:20,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-29 05:59:20,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355903378] [2023-11-29 05:59:20,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:59:20,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 05:59:20,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:59:20,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 05:59:20,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:59:20,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:59:20,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 972 transitions, 15326 flow. Second operand has 17 states, 17 states have (on average 6.352941176470588) internal successors, (108), 17 states have internal predecessors, (108), 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 05:59:20,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:59:20,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:59:20,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:59:23,161 INFO L124 PetriNetUnfolderBase]: 6046/9078 cut-off events. [2023-11-29 05:59:23,161 INFO L125 PetriNetUnfolderBase]: For 158397/158397 co-relation queries the response was YES. [2023-11-29 05:59:23,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72304 conditions, 9078 events. 6046/9078 cut-off events. For 158397/158397 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 52785 event pairs, 1129 based on Foata normal form. 150/9228 useless extension candidates. Maximal degree in co-relation 71708. Up to 3206 conditions per place. [2023-11-29 05:59:23,257 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 899 selfloop transitions, 205 changer transitions 61/1166 dead transitions. [2023-11-29 05:59:23,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 1166 transitions, 19736 flow [2023-11-29 05:59:23,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:59:23,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 05:59:23,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2023-11-29 05:59:23,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47126436781609193 [2023-11-29 05:59:23,258 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 123 transitions. [2023-11-29 05:59:23,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 123 transitions. [2023-11-29 05:59:23,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:59:23,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 123 transitions. [2023-11-29 05:59:23,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 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 05:59:23,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 29.0) internal successors, (290), 10 states have internal predecessors, (290), 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 05:59:23,260 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 29.0) internal successors, (290), 10 states have internal predecessors, (290), 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 05:59:23,260 INFO L175 Difference]: Start difference. First operand has 334 places, 972 transitions, 15326 flow. Second operand 9 states and 123 transitions. [2023-11-29 05:59:23,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 1166 transitions, 19736 flow [2023-11-29 05:59:25,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 1166 transitions, 18535 flow, removed 270 selfloop flow, removed 9 redundant places. [2023-11-29 05:59:25,228 INFO L231 Difference]: Finished difference. Result has 336 places, 980 transitions, 15051 flow [2023-11-29 05:59:25,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=14043, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=952, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=773, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15051, PETRI_PLACES=336, PETRI_TRANSITIONS=980} [2023-11-29 05:59:25,229 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2023-11-29 05:59:25,229 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 980 transitions, 15051 flow [2023-11-29 05:59:25,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.352941176470588) internal successors, (108), 17 states have internal predecessors, (108), 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 05:59:25,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:59:25,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:59:25,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 05:59:25,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:25,430 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:59:25,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:59:25,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1544031945, now seen corresponding path program 6 times [2023-11-29 05:59:25,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:59:25,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782617234] [2023-11-29 05:59:25,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:59:25,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:59:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:59:25,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:59:25,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:59:25,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782617234] [2023-11-29 05:59:25,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782617234] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:59:25,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100760584] [2023-11-29 05:59:25,504 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 05:59:25,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:25,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:59:25,505 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:59:25,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 05:59:25,624 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 05:59:25,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:59:25,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 05:59:25,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:59:25,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:59:25,683 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:59:25,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:59:25,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100760584] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:59:25,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:59:25,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-11-29 05:59:25,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554072757] [2023-11-29 05:59:25,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:59:25,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:59:25,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:59:25,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:59:25,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:59:25,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:59:25,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 980 transitions, 15051 flow. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 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 05:59:25,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:59:25,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:59:25,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:59:28,754 INFO L124 PetriNetUnfolderBase]: 5609/8610 cut-off events. [2023-11-29 05:59:28,754 INFO L125 PetriNetUnfolderBase]: For 143704/143704 co-relation queries the response was YES. [2023-11-29 05:59:28,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65483 conditions, 8610 events. 5609/8610 cut-off events. For 143704/143704 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 50969 event pairs, 955 based on Foata normal form. 306/8916 useless extension candidates. Maximal degree in co-relation 65083. Up to 3206 conditions per place. [2023-11-29 05:59:28,847 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 869 selfloop transitions, 193 changer transitions 68/1131 dead transitions. [2023-11-29 05:59:28,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 1131 transitions, 17427 flow [2023-11-29 05:59:28,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:59:28,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 05:59:28,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2023-11-29 05:59:28,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46206896551724136 [2023-11-29 05:59:28,849 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 134 transitions. [2023-11-29 05:59:28,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 134 transitions. [2023-11-29 05:59:28,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:59:28,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 134 transitions. [2023-11-29 05:59:28,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 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 05:59:28,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 29.0) internal successors, (319), 11 states have internal predecessors, (319), 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 05:59:28,850 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 29.0) internal successors, (319), 11 states have internal predecessors, (319), 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 05:59:28,850 INFO L175 Difference]: Start difference. First operand has 336 places, 980 transitions, 15051 flow. Second operand 10 states and 134 transitions. [2023-11-29 05:59:28,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 1131 transitions, 17427 flow [2023-11-29 05:59:30,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 1131 transitions, 16975 flow, removed 109 selfloop flow, removed 12 redundant places. [2023-11-29 05:59:30,097 INFO L231 Difference]: Finished difference. Result has 331 places, 880 transitions, 13119 flow [2023-11-29 05:59:30,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=12402, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=868, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=695, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13119, PETRI_PLACES=331, PETRI_TRANSITIONS=880} [2023-11-29 05:59:30,098 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2023-11-29 05:59:30,098 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 880 transitions, 13119 flow [2023-11-29 05:59:30,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 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 05:59:30,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:59:30,098 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 05:59:30,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 05:59:30,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:30,299 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:59:30,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:59:30,299 INFO L85 PathProgramCache]: Analyzing trace with hash -62758880, now seen corresponding path program 9 times [2023-11-29 05:59:30,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:59:30,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121959758] [2023-11-29 05:59:30,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:59:30,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:59:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:59:30,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:59:30,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:59:30,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121959758] [2023-11-29 05:59:30,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121959758] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:59:30,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948514583] [2023-11-29 05:59:30,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:59:30,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:30,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:59:30,406 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:59:30,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 05:59:30,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 05:59:30,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:59:30,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 05:59:30,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:59:30,639 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:59:30,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:59:30,682 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:59:30,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948514583] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:59:30,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:59:30,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-11-29 05:59:30,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120259942] [2023-11-29 05:59:30,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:59:30,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 05:59:30,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:59:30,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 05:59:30,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:59:30,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:59:30,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 880 transitions, 13119 flow. Second operand has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 states have internal predecessors, (100), 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 05:59:30,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:59:30,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:59:30,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:59:32,028 INFO L124 PetriNetUnfolderBase]: 3045/4640 cut-off events. [2023-11-29 05:59:32,028 INFO L125 PetriNetUnfolderBase]: For 68090/68090 co-relation queries the response was YES. [2023-11-29 05:59:32,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37333 conditions, 4640 events. 3045/4640 cut-off events. For 68090/68090 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 24526 event pairs, 811 based on Foata normal form. 240/4880 useless extension candidates. Maximal degree in co-relation 37230. Up to 3206 conditions per place. [2023-11-29 05:59:32,078 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 412 selfloop transitions, 3 changer transitions 249/665 dead transitions. [2023-11-29 05:59:32,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 665 transitions, 11784 flow [2023-11-29 05:59:32,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:59:32,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:59:32,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 95 transitions. [2023-11-29 05:59:32,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46798029556650245 [2023-11-29 05:59:32,079 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 95 transitions. [2023-11-29 05:59:32,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 95 transitions. [2023-11-29 05:59:32,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:59:32,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 95 transitions. [2023-11-29 05:59:32,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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 05:59:32,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 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 05:59:32,080 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 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 05:59:32,080 INFO L175 Difference]: Start difference. First operand has 331 places, 880 transitions, 13119 flow. Second operand 7 states and 95 transitions. [2023-11-29 05:59:32,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 665 transitions, 11784 flow [2023-11-29 05:59:32,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 665 transitions, 11378 flow, removed 101 selfloop flow, removed 28 redundant places. [2023-11-29 05:59:32,593 INFO L231 Difference]: Finished difference. Result has 279 places, 416 transitions, 5933 flow [2023-11-29 05:59:32,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=9998, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=641, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5933, PETRI_PLACES=279, PETRI_TRANSITIONS=416} [2023-11-29 05:59:32,594 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2023-11-29 05:59:32,594 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 416 transitions, 5933 flow [2023-11-29 05:59:32,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 states have internal predecessors, (100), 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 05:59:32,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:59:32,594 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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 05:59:32,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-29 05:59:32,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:32,795 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:59:32,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:59:32,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1151394903, now seen corresponding path program 10 times [2023-11-29 05:59:32,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:59:32,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711619144] [2023-11-29 05:59:32,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:59:32,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:59:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:59:32,893 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:59:32,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:59:32,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711619144] [2023-11-29 05:59:32,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711619144] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:59:32,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263895653] [2023-11-29 05:59:32,894 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:59:32,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:32,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:59:32,895 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:59:32,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 05:59:32,996 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:59:32,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:59:32,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:59:32,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:59:33,077 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:59:33,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:59:33,157 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:59:33,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263895653] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:59:33,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:59:33,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-11-29 05:59:33,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611969856] [2023-11-29 05:59:33,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:59:33,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 05:59:33,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:59:33,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 05:59:33,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:59:33,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:59:33,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 416 transitions, 5933 flow. Second operand has 19 states, 19 states have (on average 6.473684210526316) internal successors, (123), 19 states have internal predecessors, (123), 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 05:59:33,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:59:33,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:59:33,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:59:34,386 INFO L124 PetriNetUnfolderBase]: 2262/3233 cut-off events. [2023-11-29 05:59:34,386 INFO L125 PetriNetUnfolderBase]: For 43439/43439 co-relation queries the response was YES. [2023-11-29 05:59:34,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24883 conditions, 3233 events. 2262/3233 cut-off events. For 43439/43439 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 14330 event pairs, 177 based on Foata normal form. 30/3263 useless extension candidates. Maximal degree in co-relation 24801. Up to 997 conditions per place. [2023-11-29 05:59:34,416 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 341 selfloop transitions, 265 changer transitions 0/607 dead transitions. [2023-11-29 05:59:34,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 607 transitions, 8848 flow [2023-11-29 05:59:34,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 05:59:34,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-29 05:59:34,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 218 transitions. [2023-11-29 05:59:34,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3758620689655172 [2023-11-29 05:59:34,418 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 218 transitions. [2023-11-29 05:59:34,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 218 transitions. [2023-11-29 05:59:34,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:59:34,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 218 transitions. [2023-11-29 05:59:34,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 10.9) internal successors, (218), 20 states have internal predecessors, (218), 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 05:59:34,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 29.0) internal successors, (609), 21 states have internal predecessors, (609), 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 05:59:34,419 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 29.0) internal successors, (609), 21 states have internal predecessors, (609), 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 05:59:34,419 INFO L175 Difference]: Start difference. First operand has 279 places, 416 transitions, 5933 flow. Second operand 20 states and 218 transitions. [2023-11-29 05:59:34,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 607 transitions, 8848 flow [2023-11-29 05:59:34,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 607 transitions, 8349 flow, removed 198 selfloop flow, removed 22 redundant places. [2023-11-29 05:59:34,643 INFO L231 Difference]: Finished difference. Result has 201 places, 460 transitions, 6591 flow [2023-11-29 05:59:34,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=5523, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=6591, PETRI_PLACES=201, PETRI_TRANSITIONS=460} [2023-11-29 05:59:34,643 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2023-11-29 05:59:34,644 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 460 transitions, 6591 flow [2023-11-29 05:59:34,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.473684210526316) internal successors, (123), 19 states have internal predecessors, (123), 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 05:59:34,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:59:34,644 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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 05:59:34,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-29 05:59:34,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:34,844 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:59:34,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:59:34,845 INFO L85 PathProgramCache]: Analyzing trace with hash 808013128, now seen corresponding path program 8 times [2023-11-29 05:59:34,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:59:34,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069265591] [2023-11-29 05:59:34,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:59:34,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:59:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:59:34,941 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:59:34,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:59:34,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069265591] [2023-11-29 05:59:34,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069265591] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:59:34,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315404060] [2023-11-29 05:59:34,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:59:34,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:34,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:59:34,942 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:59:34,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 05:59:35,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:59:35,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:59:35,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:59:35,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:59:35,141 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:59:35,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:59:35,215 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:59:35,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315404060] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:59:35,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:59:35,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-11-29 05:59:35,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272529957] [2023-11-29 05:59:35,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:59:35,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 05:59:35,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:59:35,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 05:59:35,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:59:35,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:59:35,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 460 transitions, 6591 flow. Second operand has 19 states, 19 states have (on average 6.2105263157894735) internal successors, (118), 19 states have internal predecessors, (118), 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 05:59:35,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:59:35,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:59:35,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:59:36,010 INFO L124 PetriNetUnfolderBase]: 2574/3701 cut-off events. [2023-11-29 05:59:36,010 INFO L125 PetriNetUnfolderBase]: For 49991/49991 co-relation queries the response was YES. [2023-11-29 05:59:36,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28077 conditions, 3701 events. 2574/3701 cut-off events. For 49991/49991 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 17086 event pairs, 232 based on Foata normal form. 32/3733 useless extension candidates. Maximal degree in co-relation 28010. Up to 1223 conditions per place. [2023-11-29 05:59:36,042 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 503 selfloop transitions, 166 changer transitions 0/670 dead transitions. [2023-11-29 05:59:36,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 670 transitions, 10304 flow [2023-11-29 05:59:36,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:59:36,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 05:59:36,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2023-11-29 05:59:36,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40344827586206894 [2023-11-29 05:59:36,043 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 117 transitions. [2023-11-29 05:59:36,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 117 transitions. [2023-11-29 05:59:36,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:59:36,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 117 transitions. [2023-11-29 05:59:36,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 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 05:59:36,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 29.0) internal successors, (319), 11 states have internal predecessors, (319), 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 05:59:36,044 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 29.0) internal successors, (319), 11 states have internal predecessors, (319), 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 05:59:36,044 INFO L175 Difference]: Start difference. First operand has 201 places, 460 transitions, 6591 flow. Second operand 10 states and 117 transitions. [2023-11-29 05:59:36,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 670 transitions, 10304 flow [2023-11-29 05:59:36,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 670 transitions, 9914 flow, removed 89 selfloop flow, removed 9 redundant places. [2023-11-29 05:59:36,306 INFO L231 Difference]: Finished difference. Result has 204 places, 480 transitions, 7104 flow [2023-11-29 05:59:36,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=6253, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7104, PETRI_PLACES=204, PETRI_TRANSITIONS=480} [2023-11-29 05:59:36,307 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 173 predicate places. [2023-11-29 05:59:36,307 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 480 transitions, 7104 flow [2023-11-29 05:59:36,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.2105263157894735) internal successors, (118), 19 states have internal predecessors, (118), 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 05:59:36,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:59:36,307 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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 05:59:36,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 05:59:36,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:36,508 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:59:36,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:59:36,508 INFO L85 PathProgramCache]: Analyzing trace with hash -938562402, now seen corresponding path program 9 times [2023-11-29 05:59:36,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:59:36,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685576685] [2023-11-29 05:59:36,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:59:36,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:59:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:59:36,593 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:59:36,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:59:36,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685576685] [2023-11-29 05:59:36,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685576685] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:59:36,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422026758] [2023-11-29 05:59:36,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:59:36,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:36,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:59:36,595 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:59:36,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 05:59:36,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 05:59:36,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:59:36,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:59:36,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:59:36,799 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:59:36,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:59:36,872 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:59:36,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422026758] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:59:36,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:59:36,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-11-29 05:59:36,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860149225] [2023-11-29 05:59:36,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:59:36,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 05:59:36,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:59:36,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 05:59:36,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:59:36,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:59:36,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 480 transitions, 7104 flow. Second operand has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 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 05:59:36,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:59:36,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:59:36,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:59:37,960 INFO L124 PetriNetUnfolderBase]: 3006/4339 cut-off events. [2023-11-29 05:59:37,960 INFO L125 PetriNetUnfolderBase]: For 59955/59955 co-relation queries the response was YES. [2023-11-29 05:59:37,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33199 conditions, 4339 events. 3006/4339 cut-off events. For 59955/59955 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 20704 event pairs, 460 based on Foata normal form. 48/4387 useless extension candidates. Maximal degree in co-relation 33131. Up to 2445 conditions per place. [2023-11-29 05:59:37,998 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 553 selfloop transitions, 275 changer transitions 0/829 dead transitions. [2023-11-29 05:59:37,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 829 transitions, 12884 flow [2023-11-29 05:59:37,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 05:59:37,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 05:59:37,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 189 transitions. [2023-11-29 05:59:37,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4073275862068966 [2023-11-29 05:59:37,999 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 189 transitions. [2023-11-29 05:59:37,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 189 transitions. [2023-11-29 05:59:37,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:59:37,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 189 transitions. [2023-11-29 05:59:37,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 11.8125) internal successors, (189), 16 states have internal predecessors, (189), 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 05:59:38,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 29.0) internal successors, (493), 17 states have internal predecessors, (493), 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 05:59:38,000 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 29.0) internal successors, (493), 17 states have internal predecessors, (493), 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 05:59:38,000 INFO L175 Difference]: Start difference. First operand has 204 places, 480 transitions, 7104 flow. Second operand 16 states and 189 transitions. [2023-11-29 05:59:38,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 829 transitions, 12884 flow [2023-11-29 05:59:38,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 829 transitions, 12513 flow, removed 90 selfloop flow, removed 6 redundant places. [2023-11-29 05:59:38,310 INFO L231 Difference]: Finished difference. Result has 217 places, 587 transitions, 9139 flow [2023-11-29 05:59:38,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=6862, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=9139, PETRI_PLACES=217, PETRI_TRANSITIONS=587} [2023-11-29 05:59:38,311 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 186 predicate places. [2023-11-29 05:59:38,311 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 587 transitions, 9139 flow [2023-11-29 05:59:38,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 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 05:59:38,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:59:38,311 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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 05:59:38,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-29 05:59:38,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 05:59:38,512 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:59:38,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:59:38,512 INFO L85 PathProgramCache]: Analyzing trace with hash -999682104, now seen corresponding path program 10 times [2023-11-29 05:59:38,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:59:38,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059820173] [2023-11-29 05:59:38,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:59:38,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:59:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:59:38,622 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:59:38,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:59:38,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059820173] [2023-11-29 05:59:38,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059820173] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:59:38,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580662588] [2023-11-29 05:59:38,623 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:59:38,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:38,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:59:38,624 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:59:38,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 05:59:38,737 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:59:38,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:59:38,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:59:38,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:59:38,816 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:59:38,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:59:38,888 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:59:38,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580662588] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:59:38,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:59:38,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-11-29 05:59:38,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217265698] [2023-11-29 05:59:38,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:59:38,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 05:59:38,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:59:38,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 05:59:38,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:59:38,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:59:38,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 587 transitions, 9139 flow. Second operand has 19 states, 19 states have (on average 6.315789473684211) internal successors, (120), 19 states have internal predecessors, (120), 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 05:59:38,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:59:38,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:59:38,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:59:40,759 INFO L124 PetriNetUnfolderBase]: 3240/4721 cut-off events. [2023-11-29 05:59:40,759 INFO L125 PetriNetUnfolderBase]: For 72493/72493 co-relation queries the response was YES. [2023-11-29 05:59:40,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38041 conditions, 4721 events. 3240/4721 cut-off events. For 72493/72493 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 23022 event pairs, 213 based on Foata normal form. 48/4769 useless extension candidates. Maximal degree in co-relation 37969. Up to 1371 conditions per place. [2023-11-29 05:59:40,838 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 458 selfloop transitions, 543 changer transitions 0/1002 dead transitions. [2023-11-29 05:59:40,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 1002 transitions, 15962 flow [2023-11-29 05:59:40,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-29 05:59:40,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-11-29 05:59:40,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 445 transitions. [2023-11-29 05:59:40,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3487460815047022 [2023-11-29 05:59:40,840 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 445 transitions. [2023-11-29 05:59:40,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 445 transitions. [2023-11-29 05:59:40,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:59:40,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 445 transitions. [2023-11-29 05:59:40,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 10.113636363636363) internal successors, (445), 44 states have internal predecessors, (445), 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 05:59:40,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 29.0) internal successors, (1305), 45 states have internal predecessors, (1305), 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 05:59:40,843 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 29.0) internal successors, (1305), 45 states have internal predecessors, (1305), 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 05:59:40,843 INFO L175 Difference]: Start difference. First operand has 217 places, 587 transitions, 9139 flow. Second operand 44 states and 445 transitions. [2023-11-29 05:59:40,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 1002 transitions, 15962 flow [2023-11-29 05:59:41,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 1002 transitions, 15144 flow, removed 208 selfloop flow, removed 8 redundant places. [2023-11-29 05:59:41,360 INFO L231 Difference]: Finished difference. Result has 258 places, 790 transitions, 12699 flow [2023-11-29 05:59:41,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=8491, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=376, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=12699, PETRI_PLACES=258, PETRI_TRANSITIONS=790} [2023-11-29 05:59:41,360 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2023-11-29 05:59:41,361 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 790 transitions, 12699 flow [2023-11-29 05:59:41,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.315789473684211) internal successors, (120), 19 states have internal predecessors, (120), 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 05:59:41,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:59:41,361 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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 05:59:41,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-29 05:59:41,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 05:59:41,562 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:59:41,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:59:41,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1547582788, now seen corresponding path program 11 times [2023-11-29 05:59:41,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:59:41,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113729597] [2023-11-29 05:59:41,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:59:41,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:59:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:59:41,700 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:59:41,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:59:41,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113729597] [2023-11-29 05:59:41,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113729597] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:59:41,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148696596] [2023-11-29 05:59:41,700 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 05:59:41,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:41,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:59:41,701 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:59:41,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 05:59:41,828 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:59:41,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:59:41,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:59:41,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:59:41,924 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:59:41,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:59:41,996 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:59:41,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148696596] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:59:41,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:59:41,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-29 05:59:41,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81368469] [2023-11-29 05:59:41,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:59:41,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:59:41,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:59:41,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:59:41,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:59:41,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:59:41,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 790 transitions, 12699 flow. Second operand has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 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 05:59:41,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:59:41,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:59:41,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:59:43,777 INFO L124 PetriNetUnfolderBase]: 3194/4643 cut-off events. [2023-11-29 05:59:43,777 INFO L125 PetriNetUnfolderBase]: For 70009/70009 co-relation queries the response was YES. [2023-11-29 05:59:43,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38213 conditions, 4643 events. 3194/4643 cut-off events. For 70009/70009 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 22531 event pairs, 213 based on Foata normal form. 62/4705 useless extension candidates. Maximal degree in co-relation 38135. Up to 1335 conditions per place. [2023-11-29 05:59:43,823 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 449 selfloop transitions, 582 changer transitions 0/1032 dead transitions. [2023-11-29 05:59:43,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 1032 transitions, 17086 flow [2023-11-29 05:59:43,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 05:59:43,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-11-29 05:59:43,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 370 transitions. [2023-11-29 05:59:43,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645320197044335 [2023-11-29 05:59:43,824 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 370 transitions. [2023-11-29 05:59:43,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 370 transitions. [2023-11-29 05:59:43,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:59:43,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 370 transitions. [2023-11-29 05:59:43,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 10.571428571428571) internal successors, (370), 35 states have internal predecessors, (370), 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 05:59:43,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 29.0) internal successors, (1044), 36 states have internal predecessors, (1044), 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 05:59:43,826 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 29.0) internal successors, (1044), 36 states have internal predecessors, (1044), 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 05:59:43,827 INFO L175 Difference]: Start difference. First operand has 258 places, 790 transitions, 12699 flow. Second operand 35 states and 370 transitions. [2023-11-29 05:59:43,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 1032 transitions, 17086 flow [2023-11-29 05:59:44,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 1032 transitions, 16045 flow, removed 468 selfloop flow, removed 8 redundant places. [2023-11-29 05:59:44,438 INFO L231 Difference]: Finished difference. Result has 283 places, 842 transitions, 13512 flow [2023-11-29 05:59:44,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=11519, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=777, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=517, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=13512, PETRI_PLACES=283, PETRI_TRANSITIONS=842} [2023-11-29 05:59:44,439 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 252 predicate places. [2023-11-29 05:59:44,439 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 842 transitions, 13512 flow [2023-11-29 05:59:44,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 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 05:59:44,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:59:44,439 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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 05:59:44,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-29 05:59:44,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:44,640 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:59:44,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:59:44,640 INFO L85 PathProgramCache]: Analyzing trace with hash 83654033, now seen corresponding path program 11 times [2023-11-29 05:59:44,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:59:44,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371360817] [2023-11-29 05:59:44,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:59:44,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:59:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:59:44,757 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:59:44,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:59:44,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371360817] [2023-11-29 05:59:44,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371360817] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:59:44,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191244556] [2023-11-29 05:59:44,758 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 05:59:44,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:44,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:59:44,759 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:59:44,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-29 05:59:44,880 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:59:44,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:59:44,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:59:44,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:59:44,962 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:59:44,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:59:45,036 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:59:45,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191244556] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:59:45,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:59:45,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-11-29 05:59:45,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462430770] [2023-11-29 05:59:45,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:59:45,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 05:59:45,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:59:45,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 05:59:45,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:59:45,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:59:45,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 842 transitions, 13512 flow. Second operand has 19 states, 19 states have (on average 6.526315789473684) internal successors, (124), 19 states have internal predecessors, (124), 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 05:59:45,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:59:45,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:59:45,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:59:47,592 INFO L124 PetriNetUnfolderBase]: 4094/5885 cut-off events. [2023-11-29 05:59:47,592 INFO L125 PetriNetUnfolderBase]: For 87541/87541 co-relation queries the response was YES. [2023-11-29 05:59:47,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49879 conditions, 5885 events. 4094/5885 cut-off events. For 87541/87541 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 28878 event pairs, 163 based on Foata normal form. 84/5969 useless extension candidates. Maximal degree in co-relation 49802. Up to 2005 conditions per place. [2023-11-29 05:59:47,652 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 464 selfloop transitions, 723 changer transitions 0/1188 dead transitions. [2023-11-29 05:59:47,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 1188 transitions, 20061 flow [2023-11-29 05:59:47,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-29 05:59:47,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-11-29 05:59:47,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 496 transitions. [2023-11-29 05:59:47,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36390315480557595 [2023-11-29 05:59:47,654 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 496 transitions. [2023-11-29 05:59:47,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 496 transitions. [2023-11-29 05:59:47,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:59:47,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 496 transitions. [2023-11-29 05:59:47,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 10.553191489361701) internal successors, (496), 47 states have internal predecessors, (496), 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 05:59:47,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 29.0) internal successors, (1392), 48 states have internal predecessors, (1392), 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 05:59:47,657 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 29.0) internal successors, (1392), 48 states have internal predecessors, (1392), 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 05:59:47,658 INFO L175 Difference]: Start difference. First operand has 283 places, 842 transitions, 13512 flow. Second operand 47 states and 496 transitions. [2023-11-29 05:59:47,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 1188 transitions, 20061 flow [2023-11-29 05:59:48,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 1188 transitions, 18816 flow, removed 171 selfloop flow, removed 15 redundant places. [2023-11-29 05:59:48,324 INFO L231 Difference]: Finished difference. Result has 311 places, 941 transitions, 15685 flow [2023-11-29 05:59:48,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=12179, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=818, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=619, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=15685, PETRI_PLACES=311, PETRI_TRANSITIONS=941} [2023-11-29 05:59:48,325 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 280 predicate places. [2023-11-29 05:59:48,325 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 941 transitions, 15685 flow [2023-11-29 05:59:48,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.526315789473684) internal successors, (124), 19 states have internal predecessors, (124), 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 05:59:48,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:59:48,325 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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 05:59:48,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-11-29 05:59:48,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:48,526 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:59:48,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:59:48,526 INFO L85 PathProgramCache]: Analyzing trace with hash 505515251, now seen corresponding path program 12 times [2023-11-29 05:59:48,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:59:48,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118778859] [2023-11-29 05:59:48,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:59:48,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:59:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:59:48,646 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:59:48,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:59:48,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118778859] [2023-11-29 05:59:48,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118778859] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:59:48,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045737227] [2023-11-29 05:59:48,647 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 05:59:48,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:48,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:59:48,648 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:59:48,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-29 05:59:48,777 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 05:59:48,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:59:48,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:59:48,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:59:48,865 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:59:48,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:59:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:59:48,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045737227] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:59:48,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:59:48,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-11-29 05:59:48,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888274677] [2023-11-29 05:59:48,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:59:48,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 05:59:48,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:59:48,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 05:59:48,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-11-29 05:59:48,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:59:48,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 941 transitions, 15685 flow. Second operand has 20 states, 20 states have (on average 6.25) internal successors, (125), 20 states have internal predecessors, (125), 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 05:59:48,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:59:48,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:59:48,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:59:50,405 INFO L124 PetriNetUnfolderBase]: 4131/5948 cut-off events. [2023-11-29 05:59:50,405 INFO L125 PetriNetUnfolderBase]: For 86206/86206 co-relation queries the response was YES. [2023-11-29 05:59:50,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51190 conditions, 5948 events. 4131/5948 cut-off events. For 86206/86206 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 29221 event pairs, 988 based on Foata normal form. 26/5974 useless extension candidates. Maximal degree in co-relation 51114. Up to 4893 conditions per place. [2023-11-29 05:59:50,467 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 807 selfloop transitions, 211 changer transitions 0/1019 dead transitions. [2023-11-29 05:59:50,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 1019 transitions, 18604 flow [2023-11-29 05:59:50,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:59:50,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:59:50,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2023-11-29 05:59:50,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3730407523510972 [2023-11-29 05:59:50,468 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 119 transitions. [2023-11-29 05:59:50,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 119 transitions. [2023-11-29 05:59:50,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:59:50,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 119 transitions. [2023-11-29 05:59:50,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 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 05:59:50,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 29.0) internal successors, (348), 12 states have internal predecessors, (348), 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 05:59:50,469 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 29.0) internal successors, (348), 12 states have internal predecessors, (348), 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 05:59:50,469 INFO L175 Difference]: Start difference. First operand has 311 places, 941 transitions, 15685 flow. Second operand 11 states and 119 transitions. [2023-11-29 05:59:50,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 1019 transitions, 18604 flow [2023-11-29 05:59:51,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 1019 transitions, 16851 flow, removed 415 selfloop flow, removed 22 redundant places. [2023-11-29 05:59:51,247 INFO L231 Difference]: Finished difference. Result has 300 places, 949 transitions, 14608 flow [2023-11-29 05:59:51,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=14028, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=941, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=730, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14608, PETRI_PLACES=300, PETRI_TRANSITIONS=949} [2023-11-29 05:59:51,248 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 269 predicate places. [2023-11-29 05:59:51,248 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 949 transitions, 14608 flow [2023-11-29 05:59:51,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.25) internal successors, (125), 20 states have internal predecessors, (125), 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 05:59:51,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:59:51,248 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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 05:59:51,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-11-29 05:59:51,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 05:59:51,449 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:59:51,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:59:51,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1202782129, now seen corresponding path program 13 times [2023-11-29 05:59:51,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:59:51,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430486773] [2023-11-29 05:59:51,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:59:51,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:59:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:59:51,566 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:59:51,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:59:51,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430486773] [2023-11-29 05:59:51,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430486773] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:59:51,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37265748] [2023-11-29 05:59:51,566 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 05:59:51,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:51,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:59:51,567 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:59:51,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-29 05:59:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:59:51,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:59:51,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:59:51,763 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:59:51,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:59:51,856 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:59:51,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37265748] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:59:51,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:59:51,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2023-11-29 05:59:51,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231587486] [2023-11-29 05:59:51,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:59:51,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 05:59:51,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:59:51,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 05:59:51,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2023-11-29 05:59:51,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:59:51,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 949 transitions, 14608 flow. Second operand has 22 states, 22 states have (on average 5.863636363636363) internal successors, (129), 22 states have internal predecessors, (129), 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 05:59:51,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:59:51,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:59:51,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:59:53,512 INFO L124 PetriNetUnfolderBase]: 4163/6002 cut-off events. [2023-11-29 05:59:53,512 INFO L125 PetriNetUnfolderBase]: For 71288/71288 co-relation queries the response was YES. [2023-11-29 05:59:53,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47226 conditions, 6002 events. 4163/6002 cut-off events. For 71288/71288 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 29679 event pairs, 405 based on Foata normal form. 22/6024 useless extension candidates. Maximal degree in co-relation 47151. Up to 2088 conditions per place. [2023-11-29 05:59:53,572 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 679 selfloop transitions, 456 changer transitions 0/1136 dead transitions. [2023-11-29 05:59:53,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 1136 transitions, 18870 flow [2023-11-29 05:59:53,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:59:53,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 05:59:53,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 229 transitions. [2023-11-29 05:59:53,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4386973180076628 [2023-11-29 05:59:53,573 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 229 transitions. [2023-11-29 05:59:53,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 229 transitions. [2023-11-29 05:59:53,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:59:53,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 229 transitions. [2023-11-29 05:59:53,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 12.722222222222221) internal successors, (229), 18 states have internal predecessors, (229), 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 05:59:53,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 29.0) internal successors, (551), 19 states have internal predecessors, (551), 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 05:59:53,574 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 29.0) internal successors, (551), 19 states have internal predecessors, (551), 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 05:59:53,575 INFO L175 Difference]: Start difference. First operand has 300 places, 949 transitions, 14608 flow. Second operand 18 states and 229 transitions. [2023-11-29 05:59:53,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 1136 transitions, 18870 flow [2023-11-29 05:59:54,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 1136 transitions, 18406 flow, removed 23 selfloop flow, removed 9 redundant places. [2023-11-29 05:59:54,217 INFO L231 Difference]: Finished difference. Result has 309 places, 956 transitions, 15270 flow [2023-11-29 05:59:54,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=14158, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=949, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=449, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=15270, PETRI_PLACES=309, PETRI_TRANSITIONS=956} [2023-11-29 05:59:54,219 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2023-11-29 05:59:54,219 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 956 transitions, 15270 flow [2023-11-29 05:59:54,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.863636363636363) internal successors, (129), 22 states have internal predecessors, (129), 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 05:59:54,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:59:54,219 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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 05:59:54,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-11-29 05:59:54,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:54,419 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:59:54,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:59:54,420 INFO L85 PathProgramCache]: Analyzing trace with hash 687570551, now seen corresponding path program 14 times [2023-11-29 05:59:54,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:59:54,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262114589] [2023-11-29 05:59:54,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:59:54,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:59:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:59:54,521 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:59:54,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:59:54,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262114589] [2023-11-29 05:59:54,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262114589] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:59:54,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401897163] [2023-11-29 05:59:54,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:59:54,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:54,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:59:54,523 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:59:54,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-29 05:59:54,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:59:54,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:59:54,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:59:54,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:59:54,717 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:59:54,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:59:54,802 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:59:54,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401897163] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:59:54,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:59:54,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-11-29 05:59:54,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093154911] [2023-11-29 05:59:54,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:59:54,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 05:59:54,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:59:54,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 05:59:54,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-11-29 05:59:54,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:59:54,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 956 transitions, 15270 flow. Second operand has 20 states, 20 states have (on average 6.05) internal successors, (121), 20 states have internal predecessors, (121), 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 05:59:54,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:59:54,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:59:54,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:59:56,327 INFO L124 PetriNetUnfolderBase]: 4223/6109 cut-off events. [2023-11-29 05:59:56,327 INFO L125 PetriNetUnfolderBase]: For 73668/73668 co-relation queries the response was YES. [2023-11-29 05:59:56,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48974 conditions, 6109 events. 4223/6109 cut-off events. For 73668/73668 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 30366 event pairs, 521 based on Foata normal form. 22/6131 useless extension candidates. Maximal degree in co-relation 48898. Up to 2552 conditions per place. [2023-11-29 05:59:56,388 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 684 selfloop transitions, 350 changer transitions 0/1035 dead transitions. [2023-11-29 05:59:56,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 1035 transitions, 18175 flow [2023-11-29 05:59:56,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:59:56,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 05:59:56,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2023-11-29 05:59:56,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3896551724137931 [2023-11-29 05:59:56,389 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 113 transitions. [2023-11-29 05:59:56,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 113 transitions. [2023-11-29 05:59:56,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:59:56,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 113 transitions. [2023-11-29 05:59:56,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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 05:59:56,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 29.0) internal successors, (319), 11 states have internal predecessors, (319), 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 05:59:56,390 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 29.0) internal successors, (319), 11 states have internal predecessors, (319), 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 05:59:56,390 INFO L175 Difference]: Start difference. First operand has 309 places, 956 transitions, 15270 flow. Second operand 10 states and 113 transitions. [2023-11-29 05:59:56,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 1035 transitions, 18175 flow [2023-11-29 05:59:57,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 1035 transitions, 17258 flow, removed 9 selfloop flow, removed 17 redundant places. [2023-11-29 05:59:57,058 INFO L231 Difference]: Finished difference. Result has 298 places, 947 transitions, 14887 flow [2023-11-29 05:59:57,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=14187, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=947, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=350, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=597, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14887, PETRI_PLACES=298, PETRI_TRANSITIONS=947} [2023-11-29 05:59:57,059 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2023-11-29 05:59:57,059 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 947 transitions, 14887 flow [2023-11-29 05:59:57,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.05) internal successors, (121), 20 states have internal predecessors, (121), 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 05:59:57,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:59:57,059 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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 05:59:57,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-11-29 05:59:57,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:57,260 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:59:57,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:59:57,260 INFO L85 PathProgramCache]: Analyzing trace with hash -356497314, now seen corresponding path program 12 times [2023-11-29 05:59:57,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:59:57,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554890741] [2023-11-29 05:59:57,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:59:57,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:59:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:59:57,361 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:59:57,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:59:57,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554890741] [2023-11-29 05:59:57,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554890741] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:59:57,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419009110] [2023-11-29 05:59:57,361 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 05:59:57,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:57,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:59:57,362 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:59:57,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-29 05:59:57,486 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 05:59:57,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:59:57,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:59:57,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:59:57,558 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:59:57,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:59:57,631 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:59:57,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419009110] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:59:57,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:59:57,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-11-29 05:59:57,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259519896] [2023-11-29 05:59:57,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:59:57,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 05:59:57,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:59:57,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 05:59:57,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:59:57,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 05:59:57,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 947 transitions, 14887 flow. Second operand has 19 states, 19 states have (on average 6.105263157894737) internal successors, (116), 19 states have internal predecessors, (116), 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 05:59:57,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:59:57,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 05:59:57,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:59:59,281 INFO L124 PetriNetUnfolderBase]: 4261/6173 cut-off events. [2023-11-29 05:59:59,281 INFO L125 PetriNetUnfolderBase]: For 74144/74144 co-relation queries the response was YES. [2023-11-29 05:59:59,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48950 conditions, 6173 events. 4261/6173 cut-off events. For 74144/74144 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 30863 event pairs, 941 based on Foata normal form. 26/6199 useless extension candidates. Maximal degree in co-relation 48876. Up to 4478 conditions per place. [2023-11-29 05:59:59,335 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 787 selfloop transitions, 229 changer transitions 0/1017 dead transitions. [2023-11-29 05:59:59,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 1017 transitions, 17593 flow [2023-11-29 05:59:59,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:59:59,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 05:59:59,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2023-11-29 05:59:59,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3689655172413793 [2023-11-29 05:59:59,337 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 107 transitions. [2023-11-29 05:59:59,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 107 transitions. [2023-11-29 05:59:59,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:59:59,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 107 transitions. [2023-11-29 05:59:59,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 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 05:59:59,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 29.0) internal successors, (319), 11 states have internal predecessors, (319), 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 05:59:59,338 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 29.0) internal successors, (319), 11 states have internal predecessors, (319), 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 05:59:59,338 INFO L175 Difference]: Start difference. First operand has 298 places, 947 transitions, 14887 flow. Second operand 10 states and 107 transitions. [2023-11-29 05:59:59,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 1017 transitions, 17593 flow [2023-11-29 05:59:59,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 1017 transitions, 16996 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-29 05:59:59,909 INFO L231 Difference]: Finished difference. Result has 300 places, 959 transitions, 14927 flow [2023-11-29 05:59:59,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=14290, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=947, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=718, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14927, PETRI_PLACES=300, PETRI_TRANSITIONS=959} [2023-11-29 05:59:59,910 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 269 predicate places. [2023-11-29 05:59:59,911 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 959 transitions, 14927 flow [2023-11-29 05:59:59,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.105263157894737) internal successors, (116), 19 states have internal predecessors, (116), 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 05:59:59,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:59:59,911 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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 05:59:59,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-11-29 06:00:00,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-11-29 06:00:00,111 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 06:00:00,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:00:00,112 INFO L85 PathProgramCache]: Analyzing trace with hash -2146423161, now seen corresponding path program 15 times [2023-11-29 06:00:00,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:00:00,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358717293] [2023-11-29 06:00:00,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:00:00,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:00:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:00:00,211 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 06:00:00,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:00:00,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358717293] [2023-11-29 06:00:00,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358717293] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:00:00,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852758074] [2023-11-29 06:00:00,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:00:00,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:00:00,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:00:00,212 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:00:00,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-29 06:00:00,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 06:00:00,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:00:00,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:00:00,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:00:00,406 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 06:00:00,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:00:00,485 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 06:00:00,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852758074] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:00:00,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:00:00,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-11-29 06:00:00,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398998477] [2023-11-29 06:00:00,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:00:00,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 06:00:00,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:00:00,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 06:00:00,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-11-29 06:00:00,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 06:00:00,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 959 transitions, 14927 flow. Second operand has 20 states, 20 states have (on average 5.95) internal successors, (119), 20 states have internal predecessors, (119), 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 06:00:00,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:00:00,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 06:00:00,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:00:02,162 INFO L124 PetriNetUnfolderBase]: 4224/6107 cut-off events. [2023-11-29 06:00:02,162 INFO L125 PetriNetUnfolderBase]: For 72035/72035 co-relation queries the response was YES. [2023-11-29 06:00:02,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48324 conditions, 6107 events. 4224/6107 cut-off events. For 72035/72035 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 30283 event pairs, 917 based on Foata normal form. 26/6133 useless extension candidates. Maximal degree in co-relation 48249. Up to 4352 conditions per place. [2023-11-29 06:00:02,222 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 776 selfloop transitions, 259 changer transitions 0/1036 dead transitions. [2023-11-29 06:00:02,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 1036 transitions, 17738 flow [2023-11-29 06:00:02,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 06:00:02,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 06:00:02,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2023-11-29 06:00:02,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39080459770114945 [2023-11-29 06:00:02,223 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 136 transitions. [2023-11-29 06:00:02,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 136 transitions. [2023-11-29 06:00:02,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:00:02,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 136 transitions. [2023-11-29 06:00:02,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 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 06:00:02,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 29.0) internal successors, (377), 13 states have internal predecessors, (377), 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 06:00:02,224 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 29.0) internal successors, (377), 13 states have internal predecessors, (377), 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 06:00:02,224 INFO L175 Difference]: Start difference. First operand has 300 places, 959 transitions, 14927 flow. Second operand 12 states and 136 transitions. [2023-11-29 06:00:02,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 1036 transitions, 17738 flow [2023-11-29 06:00:02,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 1036 transitions, 17300 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-29 06:00:02,903 INFO L231 Difference]: Finished difference. Result has 304 places, 961 transitions, 15094 flow [2023-11-29 06:00:02,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=14410, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=954, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=695, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15094, PETRI_PLACES=304, PETRI_TRANSITIONS=961} [2023-11-29 06:00:02,904 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2023-11-29 06:00:02,904 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 961 transitions, 15094 flow [2023-11-29 06:00:02,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.95) internal successors, (119), 20 states have internal predecessors, (119), 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 06:00:02,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:00:02,904 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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 06:00:02,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-11-29 06:00:03,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-11-29 06:00:03,104 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 06:00:03,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:00:03,105 INFO L85 PathProgramCache]: Analyzing trace with hash 214957492, now seen corresponding path program 13 times [2023-11-29 06:00:03,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:00:03,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240778135] [2023-11-29 06:00:03,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:00:03,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:00:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:00:03,211 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 06:00:03,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:00:03,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240778135] [2023-11-29 06:00:03,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240778135] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:00:03,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928503275] [2023-11-29 06:00:03,212 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 06:00:03,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:00:03,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:00:03,213 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:00:03,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-11-29 06:00:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:00:03,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:00:03,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:00:03,424 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 06:00:03,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:00:03,511 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 06:00:03,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928503275] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:00:03,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:00:03,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-11-29 06:00:03,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669436595] [2023-11-29 06:00:03,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:00:03,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 06:00:03,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:00:03,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 06:00:03,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2023-11-29 06:00:03,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 06:00:03,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 961 transitions, 15094 flow. Second operand has 21 states, 21 states have (on average 5.904761904761905) internal successors, (124), 21 states have internal predecessors, (124), 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 06:00:03,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:00:03,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 06:00:03,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:00:05,165 INFO L124 PetriNetUnfolderBase]: 4186/6038 cut-off events. [2023-11-29 06:00:05,166 INFO L125 PetriNetUnfolderBase]: For 72357/72357 co-relation queries the response was YES. [2023-11-29 06:00:05,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48162 conditions, 6038 events. 4186/6038 cut-off events. For 72357/72357 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 29766 event pairs, 926 based on Foata normal form. 26/6064 useless extension candidates. Maximal degree in co-relation 48086. Up to 4413 conditions per place. [2023-11-29 06:00:05,233 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 770 selfloop transitions, 263 changer transitions 0/1034 dead transitions. [2023-11-29 06:00:05,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 1034 transitions, 17775 flow [2023-11-29 06:00:05,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:00:05,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 06:00:05,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 145 transitions. [2023-11-29 06:00:05,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2023-11-29 06:00:05,235 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 145 transitions. [2023-11-29 06:00:05,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 145 transitions. [2023-11-29 06:00:05,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:00:05,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 145 transitions. [2023-11-29 06:00:05,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 11.153846153846153) internal successors, (145), 13 states have internal predecessors, (145), 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 06:00:05,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 29.0) internal successors, (406), 14 states have internal predecessors, (406), 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 06:00:05,236 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 29.0) internal successors, (406), 14 states have internal predecessors, (406), 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 06:00:05,236 INFO L175 Difference]: Start difference. First operand has 304 places, 961 transitions, 15094 flow. Second operand 13 states and 145 transitions. [2023-11-29 06:00:05,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 1034 transitions, 17775 flow [2023-11-29 06:00:05,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 1034 transitions, 17136 flow, removed 31 selfloop flow, removed 12 redundant places. [2023-11-29 06:00:05,892 INFO L231 Difference]: Finished difference. Result has 304 places, 953 transitions, 14858 flow [2023-11-29 06:00:05,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=14332, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=953, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=690, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14858, PETRI_PLACES=304, PETRI_TRANSITIONS=953} [2023-11-29 06:00:05,893 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2023-11-29 06:00:05,893 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 953 transitions, 14858 flow [2023-11-29 06:00:05,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.904761904761905) internal successors, (124), 21 states have internal predecessors, (124), 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 06:00:05,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:00:05,893 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-11-29 06:00:05,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-11-29 06:00:06,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-11-29 06:00:06,093 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 06:00:06,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:00:06,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1107825896, now seen corresponding path program 7 times [2023-11-29 06:00:06,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:00:06,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691586132] [2023-11-29 06:00:06,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:00:06,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:00:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:00:06,936 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:00:06,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:00:06,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691586132] [2023-11-29 06:00:06,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691586132] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:00:06,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468998791] [2023-11-29 06:00:06,937 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 06:00:06,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:00:06,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:00:06,938 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:00:06,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-11-29 06:00:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:00:07,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 06:00:07,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:00:07,753 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:00:07,753 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 28 treesize of output 12 [2023-11-29 06:00:07,787 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:00:07,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:00:08,152 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2023-11-29 06:00:08,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 51 [2023-11-29 06:00:09,516 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:00:09,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468998791] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:00:09,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:00:09,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-11-29 06:00:09,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258615295] [2023-11-29 06:00:09,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:00:09,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 06:00:09,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:00:09,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 06:00:09,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1031, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 06:00:09,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 06:00:09,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 953 transitions, 14858 flow. Second operand has 35 states, 35 states have (on average 6.228571428571429) internal successors, (218), 35 states have internal predecessors, (218), 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 06:00:09,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:00:09,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 06:00:09,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:00:13,696 INFO L124 PetriNetUnfolderBase]: 6072/8793 cut-off events. [2023-11-29 06:00:13,696 INFO L125 PetriNetUnfolderBase]: For 109014/109014 co-relation queries the response was YES. [2023-11-29 06:00:13,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72376 conditions, 8793 events. 6072/8793 cut-off events. For 109014/109014 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 46309 event pairs, 383 based on Foata normal form. 4/8797 useless extension candidates. Maximal degree in co-relation 72300. Up to 6563 conditions per place. [2023-11-29 06:00:13,802 INFO L140 encePairwiseOnDemand]: 16/29 looper letters, 1188 selfloop transitions, 491 changer transitions 5/1685 dead transitions. [2023-11-29 06:00:13,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 1685 transitions, 29726 flow [2023-11-29 06:00:13,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 06:00:13,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-29 06:00:13,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 418 transitions. [2023-11-29 06:00:13,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147783251231527 [2023-11-29 06:00:13,803 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 418 transitions. [2023-11-29 06:00:13,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 418 transitions. [2023-11-29 06:00:13,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:00:13,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 418 transitions. [2023-11-29 06:00:13,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 14.928571428571429) internal successors, (418), 28 states have internal predecessors, (418), 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 06:00:13,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 29.0) internal successors, (841), 29 states have internal predecessors, (841), 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 06:00:13,805 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 29.0) internal successors, (841), 29 states have internal predecessors, (841), 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 06:00:13,805 INFO L175 Difference]: Start difference. First operand has 304 places, 953 transitions, 14858 flow. Second operand 28 states and 418 transitions. [2023-11-29 06:00:13,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 1685 transitions, 29726 flow [2023-11-29 06:00:14,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 1685 transitions, 28612 flow, removed 16 selfloop flow, removed 12 redundant places. [2023-11-29 06:00:15,022 INFO L231 Difference]: Finished difference. Result has 336 places, 1362 transitions, 23790 flow [2023-11-29 06:00:15,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=14308, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=953, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=702, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=23790, PETRI_PLACES=336, PETRI_TRANSITIONS=1362} [2023-11-29 06:00:15,023 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2023-11-29 06:00:15,023 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 1362 transitions, 23790 flow [2023-11-29 06:00:15,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 6.228571428571429) internal successors, (218), 35 states have internal predecessors, (218), 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 06:00:15,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:00:15,024 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-11-29 06:00:15,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-11-29 06:00:15,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-11-29 06:00:15,224 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 06:00:15,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:00:15,224 INFO L85 PathProgramCache]: Analyzing trace with hash -605989494, now seen corresponding path program 8 times [2023-11-29 06:00:15,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:00:15,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853863520] [2023-11-29 06:00:15,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:00:15,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:00:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:00:15,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:00:15,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:00:15,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853863520] [2023-11-29 06:00:15,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853863520] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:00:15,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640140328] [2023-11-29 06:00:15,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:00:15,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:00:15,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:00:15,968 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:00:15,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-11-29 06:00:16,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:00:16,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:00:16,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-29 06:00:16,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:00:16,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:00:16,826 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:00:16,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 20 [2023-11-29 06:00:16,879 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:00:16,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:00:17,158 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:00:17,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 49 [2023-11-29 06:00:19,308 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 06:00:19,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640140328] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:00:19,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:00:19,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 9] total 31 [2023-11-29 06:00:19,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588939210] [2023-11-29 06:00:19,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:00:19,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 06:00:19,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:00:19,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 06:00:19,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2023-11-29 06:00:19,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 06:00:19,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 1362 transitions, 23790 flow. Second operand has 32 states, 32 states have (on average 6.40625) internal successors, (205), 32 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:00:19,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:00:19,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 06:00:19,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:00:24,369 INFO L124 PetriNetUnfolderBase]: 6692/9671 cut-off events. [2023-11-29 06:00:24,369 INFO L125 PetriNetUnfolderBase]: For 136936/136936 co-relation queries the response was YES. [2023-11-29 06:00:24,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83637 conditions, 9671 events. 6692/9671 cut-off events. For 136936/136936 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 51540 event pairs, 428 based on Foata normal form. 2/9673 useless extension candidates. Maximal degree in co-relation 83545. Up to 7504 conditions per place. [2023-11-29 06:00:24,489 INFO L140 encePairwiseOnDemand]: 16/29 looper letters, 1226 selfloop transitions, 567 changer transitions 2/1796 dead transitions. [2023-11-29 06:00:24,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 1796 transitions, 33408 flow [2023-11-29 06:00:24,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-29 06:00:24,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-29 06:00:24,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 444 transitions. [2023-11-29 06:00:24,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47844827586206895 [2023-11-29 06:00:24,490 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 444 transitions. [2023-11-29 06:00:24,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 444 transitions. [2023-11-29 06:00:24,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:00:24,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 444 transitions. [2023-11-29 06:00:24,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 13.875) internal successors, (444), 32 states have internal predecessors, (444), 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 06:00:24,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 29.0) internal successors, (957), 33 states have internal predecessors, (957), 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 06:00:24,492 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 29.0) internal successors, (957), 33 states have internal predecessors, (957), 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 06:00:24,492 INFO L175 Difference]: Start difference. First operand has 336 places, 1362 transitions, 23790 flow. Second operand 32 states and 444 transitions. [2023-11-29 06:00:24,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 1796 transitions, 33408 flow [2023-11-29 06:00:26,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 1796 transitions, 31544 flow, removed 930 selfloop flow, removed 2 redundant places. [2023-11-29 06:00:26,275 INFO L231 Difference]: Finished difference. Result has 382 places, 1488 transitions, 25934 flow [2023-11-29 06:00:26,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=22022, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=464, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=848, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=25934, PETRI_PLACES=382, PETRI_TRANSITIONS=1488} [2023-11-29 06:00:26,276 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 351 predicate places. [2023-11-29 06:00:26,276 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 1488 transitions, 25934 flow [2023-11-29 06:00:26,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.40625) internal successors, (205), 32 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:00:26,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:00:26,277 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-11-29 06:00:26,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-11-29 06:00:26,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-11-29 06:00:26,477 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 06:00:26,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:00:26,477 INFO L85 PathProgramCache]: Analyzing trace with hash -90225706, now seen corresponding path program 9 times [2023-11-29 06:00:26,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:00:26,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833951014] [2023-11-29 06:00:26,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:00:26,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:00:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:00:27,129 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:00:27,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:00:27,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833951014] [2023-11-29 06:00:27,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833951014] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:00:27,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126323114] [2023-11-29 06:00:27,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:00:27,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:00:27,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:00:27,130 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:00:27,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-11-29 06:00:27,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 06:00:27,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:00:27,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 06:00:27,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:00:27,827 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:00:27,827 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 28 treesize of output 12 [2023-11-29 06:00:27,851 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:00:27,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:00:28,176 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2023-11-29 06:00:28,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 51 [2023-11-29 06:00:29,595 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:00:29,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126323114] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:00:29,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:00:29,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 28 [2023-11-29 06:00:29,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443129296] [2023-11-29 06:00:29,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:00:29,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 06:00:29,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:00:29,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 06:00:29,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=688, Unknown=0, NotChecked=0, Total=812 [2023-11-29 06:00:29,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 06:00:29,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 1488 transitions, 25934 flow. Second operand has 29 states, 29 states have (on average 6.241379310344827) internal successors, (181), 29 states have internal predecessors, (181), 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 06:00:29,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:00:29,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 06:00:29,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:00:37,436 INFO L124 PetriNetUnfolderBase]: 9041/12999 cut-off events. [2023-11-29 06:00:37,436 INFO L125 PetriNetUnfolderBase]: For 200583/200583 co-relation queries the response was YES. [2023-11-29 06:00:37,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112430 conditions, 12999 events. 9041/12999 cut-off events. For 200583/200583 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 71678 event pairs, 509 based on Foata normal form. 8/13007 useless extension candidates. Maximal degree in co-relation 112320. Up to 8371 conditions per place. [2023-11-29 06:00:37,634 INFO L140 encePairwiseOnDemand]: 16/29 looper letters, 1317 selfloop transitions, 984 changer transitions 14/2316 dead transitions. [2023-11-29 06:00:37,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 2316 transitions, 43276 flow [2023-11-29 06:00:37,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-29 06:00:37,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-11-29 06:00:37,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 522 transitions. [2023-11-29 06:00:37,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2023-11-29 06:00:37,635 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 522 transitions. [2023-11-29 06:00:37,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 522 transitions. [2023-11-29 06:00:37,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:00:37,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 522 transitions. [2023-11-29 06:00:37,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 13.736842105263158) internal successors, (522), 38 states have internal predecessors, (522), 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 06:00:37,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 29.0) internal successors, (1131), 39 states have internal predecessors, (1131), 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 06:00:37,637 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 29.0) internal successors, (1131), 39 states have internal predecessors, (1131), 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 06:00:37,637 INFO L175 Difference]: Start difference. First operand has 382 places, 1488 transitions, 25934 flow. Second operand 38 states and 522 transitions. [2023-11-29 06:00:37,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 2316 transitions, 43276 flow [2023-11-29 06:00:40,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 2316 transitions, 41535 flow, removed 590 selfloop flow, removed 15 redundant places. [2023-11-29 06:00:40,570 INFO L231 Difference]: Finished difference. Result has 432 places, 1999 transitions, 37121 flow [2023-11-29 06:00:40,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=24433, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=554, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=830, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=37121, PETRI_PLACES=432, PETRI_TRANSITIONS=1999} [2023-11-29 06:00:40,571 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 401 predicate places. [2023-11-29 06:00:40,571 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 1999 transitions, 37121 flow [2023-11-29 06:00:40,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.241379310344827) internal successors, (181), 29 states have internal predecessors, (181), 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 06:00:40,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:00:40,571 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-11-29 06:00:40,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-11-29 06:00:40,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-11-29 06:00:40,772 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 06:00:40,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:00:40,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1939480514, now seen corresponding path program 10 times [2023-11-29 06:00:40,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:00:40,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963969682] [2023-11-29 06:00:40,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:00:40,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:00:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:00:41,461 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:00:41,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:00:41,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963969682] [2023-11-29 06:00:41,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963969682] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:00:41,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379505634] [2023-11-29 06:00:41,462 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:00:41,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:00:41,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:00:41,463 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:00:41,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-11-29 06:00:41,858 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:00:41,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:00:41,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-29 06:00:41,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:00:41,902 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 15 treesize of output 1 [2023-11-29 06:00:41,941 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 32 treesize of output 16 [2023-11-29 06:00:42,601 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:00:42,602 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 60 treesize of output 28 [2023-11-29 06:00:42,691 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:00:42,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:00:43,228 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 06:00:43,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379505634] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:00:43,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:00:43,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 9] total 32 [2023-11-29 06:00:43,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235171399] [2023-11-29 06:00:43,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:00:43,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 06:00:43,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:00:43,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 06:00:43,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=936, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 06:00:43,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2023-11-29 06:00:43,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 1999 transitions, 37121 flow. Second operand has 33 states, 33 states have (on average 6.333333333333333) internal successors, (209), 33 states have internal predecessors, (209), 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 06:00:43,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:00:43,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2023-11-29 06:00:43,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:00:54,006 INFO L124 PetriNetUnfolderBase]: 10739/15465 cut-off events. [2023-11-29 06:00:54,007 INFO L125 PetriNetUnfolderBase]: For 268538/268538 co-relation queries the response was YES. [2023-11-29 06:00:54,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141495 conditions, 15465 events. 10739/15465 cut-off events. For 268538/268538 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 88088 event pairs, 538 based on Foata normal form. 4/15469 useless extension candidates. Maximal degree in co-relation 141358. Up to 10250 conditions per place. [2023-11-29 06:00:54,282 INFO L140 encePairwiseOnDemand]: 15/29 looper letters, 1469 selfloop transitions, 1294 changer transitions 6/2770 dead transitions. [2023-11-29 06:00:54,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 2770 transitions, 55100 flow [2023-11-29 06:00:54,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-29 06:00:54,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-11-29 06:00:54,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 542 transitions. [2023-11-29 06:00:54,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4672413793103448 [2023-11-29 06:00:54,284 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 542 transitions. [2023-11-29 06:00:54,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 542 transitions. [2023-11-29 06:00:54,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:00:54,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 542 transitions. [2023-11-29 06:00:54,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 13.55) internal successors, (542), 40 states have internal predecessors, (542), 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 06:00:54,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 29.0) internal successors, (1189), 41 states have internal predecessors, (1189), 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 06:00:54,287 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 29.0) internal successors, (1189), 41 states have internal predecessors, (1189), 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 06:00:54,287 INFO L175 Difference]: Start difference. First operand has 432 places, 1999 transitions, 37121 flow. Second operand 40 states and 542 transitions. [2023-11-29 06:00:54,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 2770 transitions, 55100 flow [2023-11-29 06:01:00,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 2770 transitions, 51772 flow, removed 1508 selfloop flow, removed 8 redundant places. [2023-11-29 06:01:00,134 INFO L231 Difference]: Finished difference. Result has 486 places, 2367 transitions, 45590 flow [2023-11-29 06:01:00,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=34323, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1999, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=992, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=897, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=45590, PETRI_PLACES=486, PETRI_TRANSITIONS=2367} [2023-11-29 06:01:00,136 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 455 predicate places. [2023-11-29 06:01:00,136 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 2367 transitions, 45590 flow [2023-11-29 06:01:00,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 6.333333333333333) internal successors, (209), 33 states have internal predecessors, (209), 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 06:01:00,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:01:00,136 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-11-29 06:01:00,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-11-29 06:01:00,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-11-29 06:01:00,336 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 06:01:00,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:00,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1112335760, now seen corresponding path program 11 times [2023-11-29 06:01:00,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:00,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521494380] [2023-11-29 06:01:00,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:00,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:01,135 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:01:01,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:01,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521494380] [2023-11-29 06:01:01,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521494380] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:01:01,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254030290] [2023-11-29 06:01:01,135 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:01:01,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:01:01,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:01:01,136 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:01:01,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad1df4a-bf08-4f8c-b2c4-6e7067c956a8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-11-29 06:01:01,321 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:01:01,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:01:01,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-29 06:01:01,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:01:01,373 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 15 treesize of output 1 [2023-11-29 06:01:01,413 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 32 treesize of output 16 [2023-11-29 06:01:02,055 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:01:02,055 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 60 treesize of output 28 [2023-11-29 06:01:02,128 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:01:02,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:01:03,119 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 96 treesize of output 88 [2023-11-29 06:01:03,153 INFO L349 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2023-11-29 06:01:03,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 7586 treesize of output 6698 [2023-11-29 06:01:06,940 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:01:07,083 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:01:54,193 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:32,881 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:33,384 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:33,535 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:33,860 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:34,000 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:34,158 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:35,806 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:38,174 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:38,403 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:38,742 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:39,562 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:39,955 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:40,813 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:40,961 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:41,454 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:42,559 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:43,336 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 06:05:43,617 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 06:05:44,212 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 06:05:44,884 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:45,704 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:45,753 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-11-29 06:05:45,883 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:46,060 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:46,104 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-11-29 06:05:46,230 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:46,394 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:46,484 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:47,193 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:47,228 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:47,522 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:47,569 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-11-29 06:05:47,693 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:48,181 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:48,210 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:48,493 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:48,560 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-11-29 06:05:48,679 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:49,517 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:49,556 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:49,694 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:49,767 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 06:05:49,799 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 06:05:49,889 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:49,913 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:50,034 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:50,102 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 06:05:50,135 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 06:05:50,220 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:50,303 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:51,083 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:51,146 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:51,375 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:51,450 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:52,163 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:52,206 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:52,449 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:52,520 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-11-29 06:05:52,578 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:52,658 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:52,732 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-11-29 06:05:52,781 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:53,483 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:54,146 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 06:05:54,619 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:54,733 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:55,043 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:55,155 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:05:55,870 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:06:09,617 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:06:10,793 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:06:11,838 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:06:12,507 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:06:12,844 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 06:06:13,504 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:06:19,015 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:06:25,215 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:06:30,569 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:06:35,970 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:06:37,129 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:06:43,766 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:06:45,012 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:07:30,700 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:07:31,307 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:07:31,912 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:07:32,282 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:07:40,773 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:08:14,260 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:08:14,339 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:08:14,407 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:08:14,466 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 06:08:42,705 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts.